]> git.rkrishnan.org Git - tahoe-lafs/tahoe-lafs.git/blobdiff - src/allmydata/test/test_web.py
Fix tests on platforms without time.tzset (e.g. Windows). fixes ticket:2725
[tahoe-lafs/tahoe-lafs.git] / src / allmydata / test / test_web.py
index b1485981a7e73a0076b31147278d3fdf8b4dff83..2a968f9aed4f5087b6dd74849e9a0e69568364e2 100644 (file)
-import os.path, re, urllib
+import os.path, re, urllib, time, cgi
 import simplejson
 from StringIO import StringIO
+
 from twisted.application import service
 from twisted.trial import unittest
 from twisted.internet import defer, reactor
 from twisted.internet.task import Clock
 from twisted.web import client, error, http
 from twisted.python import failure, log
+
+from foolscap.api import fireEventually, flushEventualQueue
+
+from nevow.util import escapeToXML
 from nevow import rend
+
 from allmydata import interfaces, uri, webish, dirnode
 from allmydata.storage.shares import get_share_file
-from allmydata.storage_client import StorageFarmBroker
-from allmydata.immutable import upload, download
+from allmydata.storage_client import StorageFarmBroker, StubServer
+from allmydata.immutable import upload
+from allmydata.immutable.downloader.status import DownloadStatus
 from allmydata.dirnode import DirectoryNode
 from allmydata.nodemaker import NodeMaker
 from allmydata.unknown import UnknownNode
 from allmydata.web import status, common
 from allmydata.scripts.debug import CorruptShareOptions, corrupt_share
-from allmydata.util import fileutil, base32
+from allmydata.util import fileutil, base32, hashutil
 from allmydata.util.consumer import download_to_data
 from allmydata.util.netstring import split_netstring
+from allmydata.util.encodingutil import to_str
 from allmydata.test.common import FakeCHKFileNode, FakeMutableFileNode, \
-     create_chk_filenode, WebErrorMixin, ShouldFailMixin, make_mutable_file_uri
-from allmydata.interfaces import IMutableFileNode
+     create_chk_filenode, WebErrorMixin, ShouldFailMixin, \
+     make_mutable_file_uri, create_mutable_filenode
+from allmydata.interfaces import IMutableFileNode, SDMF_VERSION, MDMF_VERSION
 from allmydata.mutable import servermap, publish, retrieve
-import common_util as testutil
+import allmydata.test.common_util as testutil
 from allmydata.test.no_network import GridTestMixin
 from allmydata.test.common_web import HTTPClientGETFactory, \
      HTTPClientHEADFactory
 from allmydata.client import Client, SecretHolder
+from allmydata.introducer import IntroducerNode
 
 # create a fake uploader/downloader, and a couple of fake dirnodes, then
 # create a webserver that works against them
 
 timeout = 480 # Most of these take longer than 240 seconds on Francois's arm box.
 
+unknown_rwcap = u"lafs://from_the_future_rw_\u263A".encode('utf-8')
+unknown_rocap = u"ro.lafs://readonly_from_the_future_ro_\u263A".encode('utf-8')
+unknown_immcap = u"imm.lafs://immutable_from_the_future_imm_\u263A".encode('utf-8')
+
+FAVICON_MARKUP = '<link href="/icon.png" rel="shortcut icon" />'
+DIR_HTML_TAG = '<html lang="en">'
+
 class FakeStatsProvider:
     def get_stats(self):
         stats = {'stats': {}, 'counters': {}}
         return stats
 
 class FakeNodeMaker(NodeMaker):
+    encoding_params = {
+        'k': 3,
+        'n': 10,
+        'happy': 7,
+        'max_segment_size':128*1024 # 1024=KiB
+    }
     def _create_lit(self, cap):
-        return FakeCHKFileNode(cap)
+        return FakeCHKFileNode(cap, self.all_contents)
     def _create_immutable(self, cap):
-        return FakeCHKFileNode(cap)
+        return FakeCHKFileNode(cap, self.all_contents)
     def _create_mutable(self, cap):
-        return FakeMutableFileNode(None, None, None, None).init_from_cap(cap)
-    def create_mutable_file(self, contents="", keysize=None):
-        n = FakeMutableFileNode(None, None, None, None)
-        return n.create(contents)
+        return FakeMutableFileNode(None, None,
+                                   self.encoding_params, None,
+                                   self.all_contents).init_from_cap(cap)
+    def create_mutable_file(self, contents="", keysize=None,
+                            version=SDMF_VERSION):
+        n = FakeMutableFileNode(None, None, self.encoding_params, None,
+                                self.all_contents)
+        return n.create(contents, version=version)
 
 class FakeUploader(service.Service):
     name = "uploader"
-    def upload(self, uploadable, history=None):
+    helper_furl = None
+    helper_connected = False
+
+    def upload(self, uploadable):
         d = uploadable.get_size()
         d.addCallback(lambda size: uploadable.read(size))
         def _got_data(datav):
             data = "".join(datav)
-            n = create_chk_filenode(data)
-            results = upload.UploadResults()
-            results.uri = n.get_uri()
-            return results
+            n = create_chk_filenode(data, self.all_contents)
+            ur = upload.UploadResults(file_size=len(data),
+                                      ciphertext_fetched=0,
+                                      preexisting_shares=0,
+                                      pushed_shares=10,
+                                      sharemap={},
+                                      servermap={},
+                                      timings={},
+                                      uri_extension_data={},
+                                      uri_extension_hash="fake",
+                                      verifycapstr="fakevcap")
+            ur.set_uri(n.get_uri())
+            return ur
         d.addCallback(_got_data)
         return d
+
     def get_helper_info(self):
-        return (None, False)
+        return (self.helper_furl, self.helper_connected)
+
+
+def build_one_ds():
+    ds = DownloadStatus("storage_index", 1234)
+    now = time.time()
+
+    serverA = StubServer(hashutil.tagged_hash("foo", "serverid_a")[:20])
+    serverB = StubServer(hashutil.tagged_hash("foo", "serverid_b")[:20])
+    storage_index = hashutil.storage_index_hash("SI")
+    e0 = ds.add_segment_request(0, now)
+    e0.activate(now+0.5)
+    e0.deliver(now+1, 0, 100, 0.5) # when, start,len, decodetime
+    e1 = ds.add_segment_request(1, now+2)
+    e1.error(now+3)
+    # two outstanding requests
+    e2 = ds.add_segment_request(2, now+4)
+    e3 = ds.add_segment_request(3, now+5)
+    del e2,e3 # hush pyflakes
+
+    # simulate a segment which gets delivered faster than a system clock tick (ticket #1166)
+    e = ds.add_segment_request(4, now)
+    e.activate(now)
+    e.deliver(now, 0, 140, 0.5)
+
+    e = ds.add_dyhb_request(serverA, now)
+    e.finished([1,2], now+1)
+    e = ds.add_dyhb_request(serverB, now+2) # left unfinished
+
+    e = ds.add_read_event(0, 120, now)
+    e.update(60, 0.5, 0.1) # bytes, decrypttime, pausetime
+    e.finished(now+1)
+    e = ds.add_read_event(120, 30, now+2) # left unfinished
+
+    e = ds.add_block_request(serverA, 1, 100, 20, now)
+    e.finished(20, now+1)
+    e = ds.add_block_request(serverB, 1, 120, 30, now+1) # left unfinished
+
+    # make sure that add_read_event() can come first too
+    ds1 = DownloadStatus(storage_index, 1234)
+    e = ds1.add_read_event(0, 120, now)
+    e.update(60, 0.5, 0.1) # bytes, decrypttime, pausetime
+    e.finished(now+1)
+
+    return ds
 
 class FakeHistory:
     _all_upload_status = [upload.UploadStatus()]
-    _all_download_status = [download.DownloadStatus()]
+    _all_download_status = [build_one_ds()]
     _all_mapupdate_statuses = [servermap.UpdateStatus()]
     _all_publish_statuses = [publish.PublishStatus()]
     _all_retrieve_statuses = [retrieve.RetrieveStatus()]
@@ -87,26 +171,108 @@ class FakeHistory:
     def list_all_helper_statuses(self):
         return []
 
+class FakeDisplayableServer(StubServer):
+    def __init__(self, serverid, nickname, connected,
+                 last_connect_time, last_loss_time, last_rx_time):
+        StubServer.__init__(self, serverid)
+        self.announcement = {"my-version": "allmydata-tahoe-fake",
+                             "service-name": "storage",
+                             "nickname": nickname}
+        self.connected = connected
+        self.last_loss_time = last_loss_time
+        self.last_rx_time = last_rx_time
+        self.last_connect_time = last_connect_time
+    def is_connected(self):
+        return self.connected
+    def get_permutation_seed(self):
+        return ""
+    def get_remote_host(self):
+        return ""
+    def get_last_loss_time(self):
+        return self.last_loss_time
+    def get_last_received_data_time(self):
+        return self.last_rx_time
+    def get_last_connect_time(self):
+        return self.last_connect_time
+    def get_announcement(self):
+        return self.announcement
+    def get_nickname(self):
+        return self.announcement["nickname"]
+    def get_available_space(self):
+        return 123456
+
+class FakeBucketCounter(object):
+    def get_state(self):
+        return {"last-complete-bucket-count": 0}
+    def get_progress(self):
+        return {"estimated-time-per-cycle": 0,
+                "cycle-in-progress": False,
+                "remaining-wait-time": 0}
+
+class FakeLeaseChecker(object):
+    def __init__(self):
+        self.expiration_enabled = False
+        self.mode = "age"
+        self.override_lease_duration = None
+        self.sharetypes_to_expire = {}
+    def get_state(self):
+        return {"history": None}
+    def get_progress(self):
+        return {"estimated-time-per-cycle": 0,
+                "cycle-in-progress": False,
+                "remaining-wait-time": 0}
+
+class FakeStorageServer(service.MultiService):
+    name = 'storage'
+    def __init__(self, nodeid, nickname):
+        service.MultiService.__init__(self)
+        self.my_nodeid = nodeid
+        self.nickname = nickname
+        self.bucket_counter = FakeBucketCounter()
+        self.lease_checker = FakeLeaseChecker()
+    def get_stats(self):
+        return {"storage_server.accepting_immutable_shares": False}
+
 class FakeClient(Client):
     def __init__(self):
         # don't upcall to Client.__init__, since we only want to initialize a
         # minimal subset
         service.MultiService.__init__(self)
+        self.all_contents = {}
         self.nodeid = "fake_nodeid"
-        self.nickname = "fake_nickname"
+        self.nickname = u"fake_nickname \u263A"
         self.introducer_furl = "None"
         self.stats_provider = FakeStatsProvider()
         self._secret_holder = SecretHolder("lease secret", "convergence secret")
         self.helper = None
         self.convergence = "some random string"
         self.storage_broker = StorageFarmBroker(None, permute_peers=True)
+        # fake knowledge of another server
+        self.storage_broker.test_add_server("other_nodeid",
+            FakeDisplayableServer(
+                serverid="other_nodeid", nickname=u"other_nickname \u263B", connected = True,
+                last_connect_time = 10, last_loss_time = 20, last_rx_time = 30))
+        self.storage_broker.test_add_server("disconnected_nodeid",
+            FakeDisplayableServer(
+                serverid="other_nodeid", nickname=u"disconnected_nickname \u263B", connected = False,
+                last_connect_time = 15, last_loss_time = 25, last_rx_time = 35))
         self.introducer_client = None
         self.history = FakeHistory()
         self.uploader = FakeUploader()
+        self.uploader.all_contents = self.all_contents
         self.uploader.setServiceParent(self)
+        self.blacklist = None
         self.nodemaker = FakeNodeMaker(None, self._secret_holder, None,
-                                       self.uploader, None, None,
-                                       None, None)
+                                       self.uploader, None,
+                                       None, None, None)
+        self.nodemaker.all_contents = self.all_contents
+        self.mutable_file_default = SDMF_VERSION
+        self.addService(FakeStorageServer(self.nodeid, self.nickname))
+
+    def get_long_nodeid(self):
+        return "v0-nodeid"
+    def get_long_tubid(self):
+        return "tubid"
 
     def startService(self):
         return service.MultiService.startService(self)
@@ -115,17 +281,21 @@ class FakeClient(Client):
 
     MUTABLE_SIZELIMIT = FakeMutableFileNode.MUTABLE_SIZELIMIT
 
-class WebMixin(object):
+class WebMixin(testutil.TimezoneMixin):
     def setUp(self):
+        self.setTimezone('UTC-13:00')
         self.s = FakeClient()
         self.s.startService()
         self.staticdir = self.mktemp()
         self.clock = Clock()
+        self.fakeTime = 86460 # 1d 0h 1m 0s
         self.ws = webish.WebishServer(self.s, "0", staticdir=self.staticdir,
-                                      clock=self.clock)
+                                      clock=self.clock, now_fn=lambda:self.fakeTime)
         self.ws.setServiceParent(self.s)
-        self.webish_port = port = self.ws.listener._port.getHost().port
-        self.webish_url = "http://localhost:%d" % port
+        self.webish_port = self.ws.getPortnum()
+        self.webish_url = self.ws.getURL()
+        assert self.webish_url.endswith("/")
+        self.webish_url = self.webish_url[:-1] # these tests add their own /
 
         l = [ self.s.create_dirnode() for x in range(6) ]
         d = defer.DeferredList(l)
@@ -149,28 +319,50 @@ class WebMixin(object):
             foo.set_uri(u"bar.txt", self._bar_txt_uri, self._bar_txt_uri)
             self._bar_txt_verifycap = n.get_verify_cap().to_string()
 
+            # sdmf
+            # XXX: Do we ever use this?
+            self.BAZ_CONTENTS, n, self._baz_txt_uri, self._baz_txt_readonly_uri = self.makefile_mutable(0)
+
+            foo.set_uri(u"baz.txt", self._baz_txt_uri, self._baz_txt_readonly_uri)
+
+            # mdmf
+            self.QUUX_CONTENTS, n, self._quux_txt_uri, self._quux_txt_readonly_uri = self.makefile_mutable(0, mdmf=True)
+            assert self._quux_txt_uri.startswith("URI:MDMF")
+            foo.set_uri(u"quux.txt", self._quux_txt_uri, self._quux_txt_readonly_uri)
+
             foo.set_uri(u"empty", res[3][1].get_uri(),
                         res[3][1].get_readonly_uri())
             sub_uri = res[4][1].get_uri()
             self._sub_uri = sub_uri
             foo.set_uri(u"sub", sub_uri, sub_uri)
             sub = self.s.create_node_from_uri(sub_uri)
+            self._sub_node = sub
 
             _ign, n, blocking_uri = self.makefile(1)
             foo.set_uri(u"blockingfile", blocking_uri, blocking_uri)
 
+            # filenode to test for html encoding issues
+            self._htmlname_unicode = u"<&weirdly'named\"file>>>_<iframe />.txt"
+            self._htmlname_raw = self._htmlname_unicode.encode('utf-8')
+            self._htmlname_urlencoded = urllib.quote(self._htmlname_raw, '')
+            self._htmlname_escaped = escapeToXML(self._htmlname_raw)
+            self._htmlname_escaped_attr = cgi.escape(self._htmlname_raw, quote=True)
+            self._htmlname_escaped_double = escapeToXML(cgi.escape(self._htmlname_raw, quote=True))
+            self.HTMLNAME_CONTENTS, n, self._htmlname_txt_uri = self.makefile(0)
+            foo.set_uri(self._htmlname_unicode, self._htmlname_txt_uri, self._htmlname_txt_uri)
+
             unicode_filename = u"n\u00fc.txt" # n u-umlaut . t x t
             # ok, unicode calls it LATIN SMALL LETTER U WITH DIAERESIS but I
             # still think of it as an umlaut
             foo.set_uri(unicode_filename, self._bar_txt_uri, self._bar_txt_uri)
 
-            _ign, n, baz_file = self.makefile(2)
+            self.SUBBAZ_CONTENTS, n, baz_file = self.makefile(2)
             self._baz_file_uri = baz_file
             sub.set_uri(u"baz.txt", baz_file, baz_file)
 
             _ign, n, self._bad_file_uri = self.makefile(3)
             # this uri should not be downloadable
-            del FakeCHKFileNode.all_contents[self._bad_file_uri]
+            del self.s.all_contents[self._bad_file_uri]
 
             rodir = res[5][1]
             self.public_root.set_uri(u"reedownlee", rodir.get_readonly_uri(),
@@ -180,7 +372,10 @@ class WebMixin(object):
             # public/
             # public/foo/
             # public/foo/bar.txt
+            # public/foo/baz.txt
+            # public/foo/quux.txt
             # public/foo/blockingfile
+            # public/foo/<&weirdly'named\"file>>>_<iframe />.txt
             # public/foo/empty/
             # public/foo/sub/
             # public/foo/sub/baz.txt
@@ -195,27 +390,63 @@ class WebMixin(object):
         d.addCallback(_got_metadata)
         return d
 
+    def get_all_contents(self):
+        return self.s.all_contents
+
     def makefile(self, number):
         contents = "contents of file %s\n" % number
-        n = create_chk_filenode(contents)
+        n = create_chk_filenode(contents, self.get_all_contents())
         return contents, n, n.get_uri()
 
+    def makefile_mutable(self, number, mdmf=False):
+        contents = "contents of mutable file %s\n" % number
+        n = create_mutable_filenode(contents, mdmf, self.s.all_contents)
+        return contents, n, n.get_uri(), n.get_readonly_uri()
+
     def tearDown(self):
         return self.s.stopService()
 
     def failUnlessIsBarDotTxt(self, res):
-        self.failUnlessEqual(res, self.BAR_CONTENTS, res)
+        self.failUnlessReallyEqual(res, self.BAR_CONTENTS, res)
+
+    def failUnlessIsQuuxDotTxt(self, res):
+        self.failUnlessReallyEqual(res, self.QUUX_CONTENTS, res)
+
+    def failUnlessIsBazDotTxt(self, res):
+        self.failUnlessReallyEqual(res, self.BAZ_CONTENTS, res)
+
+    def failUnlessIsSubBazDotTxt(self, res):
+        self.failUnlessReallyEqual(res, self.SUBBAZ_CONTENTS, res)
 
     def failUnlessIsBarJSON(self, res):
         data = simplejson.loads(res)
         self.failUnless(isinstance(data, list))
-        self.failUnlessEqual(data[0], u"filenode")
+        self.failUnlessEqual(data[0], "filenode")
         self.failUnless(isinstance(data[1], dict))
         self.failIf(data[1]["mutable"])
-        self.failIf("rw_uri" in data[1]) # immutable
-        self.failUnlessEqual(data[1]["ro_uri"], self._bar_txt_uri)
-        self.failUnlessEqual(data[1]["verify_uri"], self._bar_txt_verifycap)
-        self.failUnlessEqual(data[1]["size"], len(self.BAR_CONTENTS))
+        self.failIfIn("rw_uri", data[1]) # immutable
+        self.failUnlessReallyEqual(to_str(data[1]["ro_uri"]), self._bar_txt_uri)
+        self.failUnlessReallyEqual(to_str(data[1]["verify_uri"]), self._bar_txt_verifycap)
+        self.failUnlessReallyEqual(data[1]["size"], len(self.BAR_CONTENTS))
+
+    def failUnlessIsQuuxJSON(self, res, readonly=False):
+        data = simplejson.loads(res)
+        self.failUnless(isinstance(data, list))
+        self.failUnlessEqual(data[0], "filenode")
+        self.failUnless(isinstance(data[1], dict))
+        metadata = data[1]
+        return self.failUnlessIsQuuxDotTxtMetadata(metadata, readonly)
+
+    def failUnlessIsQuuxDotTxtMetadata(self, metadata, readonly):
+        self.failUnless(metadata['mutable'])
+        if readonly:
+            self.failIfIn("rw_uri", metadata)
+        else:
+            self.failUnlessIn("rw_uri", metadata)
+            self.failUnlessEqual(metadata['rw_uri'], self._quux_txt_uri)
+        self.failUnlessIn("ro_uri", metadata)
+        self.failUnlessEqual(metadata['ro_uri'], self._quux_txt_readonly_uri)
+        self.failUnlessReallyEqual(metadata['size'], len(self.QUUX_CONTENTS))
 
     def failUnlessIsFooJSON(self, res):
         data = simplejson.loads(res)
@@ -223,31 +454,40 @@ class WebMixin(object):
         self.failUnlessEqual(data[0], "dirnode", res)
         self.failUnless(isinstance(data[1], dict))
         self.failUnless(data[1]["mutable"])
-        self.failUnless("rw_uri" in data[1]) # mutable
-        self.failUnlessEqual(data[1]["rw_uri"], self._foo_uri)
-        self.failUnlessEqual(data[1]["ro_uri"], self._foo_readonly_uri)
-        self.failUnlessEqual(data[1]["verify_uri"], self._foo_verifycap)
+        self.failUnlessIn("rw_uri", data[1]) # mutable
+        self.failUnlessReallyEqual(to_str(data[1]["rw_uri"]), self._foo_uri)
+        self.failUnlessReallyEqual(to_str(data[1]["ro_uri"]), self._foo_readonly_uri)
+        self.failUnlessReallyEqual(to_str(data[1]["verify_uri"]), self._foo_verifycap)
 
         kidnames = sorted([unicode(n) for n in data[1]["children"]])
         self.failUnlessEqual(kidnames,
-                             [u"bar.txt", u"blockingfile", u"empty",
-                              u"n\u00fc.txt", u"sub"])
+                             [self._htmlname_unicode, u"bar.txt", u"baz.txt",
+                              u"blockingfile", u"empty", u"n\u00fc.txt", u"quux.txt", u"sub"])
         kids = dict( [(unicode(name),value)
                       for (name,value)
                       in data[1]["children"].iteritems()] )
         self.failUnlessEqual(kids[u"sub"][0], "dirnode")
-        self.failUnless("metadata" in kids[u"sub"][1])
-        self.failUnless("ctime" in kids[u"sub"][1]["metadata"])
-        self.failUnless("mtime" in kids[u"sub"][1]["metadata"])
+        self.failUnlessIn("metadata", kids[u"sub"][1])
+        self.failUnlessIn("tahoe", kids[u"sub"][1]["metadata"])
+        tahoe_md = kids[u"sub"][1]["metadata"]["tahoe"]
+        self.failUnlessIn("linkcrtime", tahoe_md)
+        self.failUnlessIn("linkmotime", tahoe_md)
         self.failUnlessEqual(kids[u"bar.txt"][0], "filenode")
-        self.failUnlessEqual(kids[u"bar.txt"][1]["size"], len(self.BAR_CONTENTS))
-        self.failUnlessEqual(kids[u"bar.txt"][1]["ro_uri"], self._bar_txt_uri)
-        self.failUnlessEqual(kids[u"bar.txt"][1]["verify_uri"],
-                             self._bar_txt_verifycap)
-        self.failUnlessEqual(kids[u"bar.txt"][1]["metadata"]["ctime"],
-                             self._bar_txt_metadata["ctime"])
-        self.failUnlessEqual(kids[u"n\u00fc.txt"][1]["ro_uri"],
-                             self._bar_txt_uri)
+        self.failUnlessReallyEqual(kids[u"bar.txt"][1]["size"], len(self.BAR_CONTENTS))
+        self.failUnlessReallyEqual(to_str(kids[u"bar.txt"][1]["ro_uri"]), self._bar_txt_uri)
+        self.failUnlessReallyEqual(to_str(kids[u"bar.txt"][1]["verify_uri"]),
+                                   self._bar_txt_verifycap)
+        self.failUnlessIn("metadata", kids[u"bar.txt"][1])
+        self.failUnlessIn("tahoe", kids[u"bar.txt"][1]["metadata"])
+        self.failUnlessReallyEqual(kids[u"bar.txt"][1]["metadata"]["tahoe"]["linkcrtime"],
+                                   self._bar_txt_metadata["tahoe"]["linkcrtime"])
+        self.failUnlessReallyEqual(to_str(kids[u"n\u00fc.txt"][1]["ro_uri"]),
+                                   self._bar_txt_uri)
+        self.failUnlessIn("quux.txt", kids)
+        self.failUnlessReallyEqual(to_str(kids[u"quux.txt"][1]["rw_uri"]),
+                                   self._quux_txt_uri)
+        self.failUnlessReallyEqual(to_str(kids[u"quux.txt"][1]["ro_uri"]),
+                                   self._quux_txt_readonly_uri)
 
     def GET(self, urlpath, followRedirect=False, return_response=False,
             **kwargs):
@@ -327,13 +567,9 @@ class WebMixin(object):
         if isinstance(res, failure.Failure):
             res.trap(expected_failure)
             if substring:
-                self.failUnless(substring in str(res),
-                                "substring '%s' not in '%s'"
-                                % (substring, str(res)))
+                self.failUnlessIn(substring, str(res), which)
             if response_substring:
-                self.failUnless(response_substring in res.value.response,
-                                "response substring '%s' not in '%s'"
-                                % (response_substring, res.value.response))
+                self.failUnlessIn(response_substring, res.value.response, which)
         else:
             self.fail("%s was supposed to raise %s, not get '%s'" %
                       (which, expected_failure, res))
@@ -348,14 +584,16 @@ class WebMixin(object):
             if isinstance(res, failure.Failure):
                 res.trap(expected_failure)
                 if substring:
-                    self.failUnless(substring in str(res),
-                                    "%s: substring '%s' not in '%s'"
-                                    % (which, substring, str(res)))
+                    self.failUnlessIn(substring, str(res),
+                                      "'%s' not in '%s' (response is '%s') for test '%s'" % \
+                                      (substring, str(res),
+                                       getattr(res.value, "response", ""),
+                                       which))
                 if response_substring:
-                    self.failUnless(response_substring in res.value.response,
-                                    "%s: response substring '%s' not in '%s'"
-                                    % (which,
-                                       response_substring, res.value.response))
+                    self.failUnlessIn(response_substring, res.value.response,
+                                      "'%s' not in '%s' for test '%s'" % \
+                                      (response_substring, res.value.response,
+                                       which))
             else:
                 self.fail("%s was supposed to raise %s, not get '%s'" %
                           (which, expected_failure, res))
@@ -365,7 +603,7 @@ class WebMixin(object):
     def should404(self, res, which):
         if isinstance(res, failure.Failure):
             res.trap(error.Error)
-            self.failUnlessEqual(res.value.status, "404")
+            self.failUnlessReallyEqual(res.value.status, "404")
         else:
             self.fail("%s was supposed to Error(404), not get '%s'" %
                       (which, res))
@@ -373,20 +611,51 @@ class WebMixin(object):
     def should302(self, res, which):
         if isinstance(res, failure.Failure):
             res.trap(error.Error)
-            self.failUnlessEqual(res.value.status, "302")
+            self.failUnlessReallyEqual(res.value.status, "302")
         else:
             self.fail("%s was supposed to Error(302), not get '%s'" %
-                        (which, res))
-
+                      (which, res))
 
-class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
+class Web(WebMixin, WebErrorMixin, testutil.StallMixin, testutil.ReallyEqualMixin, unittest.TestCase):
     def test_create(self):
         pass
 
     def test_welcome(self):
         d = self.GET("/")
         def _check(res):
-            self.failUnless('Welcome To Tahoe-LAFS' in res, res)
+            self.failUnlessIn('<title>Tahoe-LAFS - Welcome</title>', res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
+            self.failUnlessIn('<a href="status">Recent and Active Operations</a>', res)
+            self.failUnlessIn('<a href="statistics">Operational Statistics</a>', res)
+            self.failUnless(re.search('<input (type="hidden" |name="t" |value="report-incident" ){3}/>',res), res)
+            self.failUnlessIn('Page rendered at', res)
+            self.failUnlessIn('Tahoe-LAFS code imported from:', res)
+            res_u = res.decode('utf-8')
+            self.failUnlessIn(u'<td>fake_nickname \u263A</td>', res_u)
+            self.failUnlessIn(u'<div class="nickname">other_nickname \u263B</div>', res_u)
+            self.failUnlessIn(u'Connected to <span>1</span>\n              of <span>2</span> known storage servers', res_u)
+            def timestamp(t):
+                return (u'"%s"' % (t,)) if self.have_working_tzset() else u'"[^"]*"'
+            self.failUnless(re.search(
+                u'<div class="status-indicator"><img (src="img/connected-yes.png" |alt="Connected" ){2}/>'
+                u'</div>\n                <a( class="timestamp"| title=%s){2}>1d\u00A00h\u00A00m\u00A050s</a>'
+                % timestamp(u'1970-01-01 13:00:10'), res_u), repr(res_u))
+            self.failUnless(re.search(
+                u'<div class="status-indicator"><img (src="img/connected-no.png" |alt="Disconnected" ){2}/>'
+                u'</div>\n                <a( class="timestamp"| title=%s){2}>1d\u00A00h\u00A00m\u00A035s</a>'
+                % timestamp(u'1970-01-01 13:00:25'), res_u), repr(res_u))
+            self.failUnless(re.search(
+                u'<td class="service-last-received-data"><a( class="timestamp"| title=%s){2}>'
+                u'1d\u00A00h\u00A00m\u00A030s</a></td>'
+                % timestamp(u'1970-01-01 13:00:30'), res_u), repr(res_u))
+            self.failUnless(re.search(
+                u'<td class="service-last-received-data"><a( class="timestamp"| title=%s){2}>'
+                u'1d\u00A00h\u00A00m\u00A025s</a></td>'
+                % timestamp(u'1970-01-01 13:00:35'), res_u), repr(res_u))
+
+            self.failUnlessIn(u'\u00A9 <a href="https://tahoe-lafs.org/">Tahoe-LAFS Software Foundation', res_u)
+            self.failUnlessIn('<td><h3>Available</h3></td>', res)
+            self.failUnlessIn('123.5kB', res)
 
             self.s.basedir = 'web/test_welcome'
             fileutil.make_dirs("web/test_welcome")
@@ -395,85 +664,102 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(_check)
         return d
 
-    def test_provisioning(self):
-        d = self.GET("/provisioning/")
-        def _check(res):
-            self.failUnless('Tahoe Provisioning Tool' in res)
-            fields = {'filled': True,
-                      "num_users": int(50e3),
-                      "files_per_user": 1000,
-                      "space_per_user": int(1e9),
-                      "sharing_ratio": 1.0,
-                      "encoding_parameters": "3-of-10-5",
-                      "num_servers": 30,
-                      "ownership_mode": "A",
-                      "download_rate": 100,
-                      "upload_rate": 10,
-                      "delete_rate": 10,
-                      "lease_timer": 7,
-                      }
-            return self.POST("/provisioning/", **fields)
+    def test_introducer_status(self):
+        class MockIntroducerClient(object):
+            def __init__(self, connected):
+                self.connected = connected
+            def connected_to_introducer(self):
+                return self.connected
 
-        d.addCallback(_check)
-        def _check2(res):
-            self.failUnless('Tahoe Provisioning Tool' in res)
-            self.failUnless("Share space consumed: 167.01TB" in res)
-
-            fields = {'filled': True,
-                      "num_users": int(50e6),
-                      "files_per_user": 1000,
-                      "space_per_user": int(5e9),
-                      "sharing_ratio": 1.0,
-                      "encoding_parameters": "25-of-100-50",
-                      "num_servers": 30000,
-                      "ownership_mode": "E",
-                      "drive_failure_model": "U",
-                      "drive_size": 1000,
-                      "download_rate": 1000,
-                      "upload_rate": 100,
-                      "delete_rate": 100,
-                      "lease_timer": 7,
-                      }
-            return self.POST("/provisioning/", **fields)
-        d.addCallback(_check2)
-        def _check3(res):
-            self.failUnless("Share space consumed: huge!" in res)
-            fields = {'filled': True}
-            return self.POST("/provisioning/", **fields)
-        d.addCallback(_check3)
-        def _check4(res):
-            self.failUnless("Share space consumed:" in res)
-        d.addCallback(_check4)
+        d = defer.succeed(None)
+
+        # introducer not connected, unguessable furl
+        def _set_introducer_not_connected_unguessable(ign):
+            self.s.introducer_furl = "pb://someIntroducer/secret"
+            self.s.introducer_client = MockIntroducerClient(False)
+            return self.GET("/")
+        d.addCallback(_set_introducer_not_connected_unguessable)
+        def _check_introducer_not_connected_unguessable(res):
+            html = res.replace('\n', ' ')
+            self.failUnlessIn('<div class="furl">pb://someIntroducer/[censored]</div>', html)
+            self.failIfIn('pb://someIntroducer/secret', html)
+            self.failUnless(re.search('<img (alt="Disconnected" |src="img/connected-no.png" ){2}/>', html), res)
+        d.addCallback(_check_introducer_not_connected_unguessable)
+
+        # introducer connected, unguessable furl
+        def _set_introducer_connected_unguessable(ign):
+            self.s.introducer_furl = "pb://someIntroducer/secret"
+            self.s.introducer_client = MockIntroducerClient(True)
+            return self.GET("/")
+        d.addCallback(_set_introducer_connected_unguessable)
+        def _check_introducer_connected_unguessable(res):
+            html = res.replace('\n', ' ')
+            self.failUnlessIn('<div class="furl">pb://someIntroducer/[censored]</div>', html)
+            self.failIfIn('pb://someIntroducer/secret', html)
+            self.failUnless(re.search('<img (src="img/connected-yes.png" |alt="Connected" ){2}/>', html), res)
+        d.addCallback(_check_introducer_connected_unguessable)
+
+        # introducer connected, guessable furl
+        def _set_introducer_connected_guessable(ign):
+            self.s.introducer_furl = "pb://someIntroducer/introducer"
+            self.s.introducer_client = MockIntroducerClient(True)
+            return self.GET("/")
+        d.addCallback(_set_introducer_connected_guessable)
+        def _check_introducer_connected_guessable(res):
+            html = res.replace('\n', ' ')
+            self.failUnlessIn('<div class="furl">pb://someIntroducer/introducer</div>', html)
+            self.failUnless(re.search('<img (src="img/connected-yes.png" |alt="Connected" ){2}/>', html), res)
+        d.addCallback(_check_introducer_connected_guessable)
         return d
 
-    def test_reliability_tool(self):
-        try:
-            from allmydata import reliability
-            _hush_pyflakes = reliability
-            del _hush_pyflakes
-        except:
-            raise unittest.SkipTest("reliability tool requires NumPy")
+    def test_helper_status(self):
+        d = defer.succeed(None)
 
-        d = self.GET("/reliability/")
-        def _check(res):
-            self.failUnless('Tahoe Reliability Tool' in res)
-            fields = {'drive_lifetime': "8Y",
-                      "k": "3",
-                      "R": "7",
-                      "N": "10",
-                      "delta": "100000",
-                      "check_period": "1M",
-                      "report_period": "3M",
-                      "report_span": "5Y",
-                      }
-            return self.POST("/reliability/", **fields)
+        # set helper furl to None
+        def _set_no_helper(ign):
+            self.s.uploader.helper_furl = None
+            return self.GET("/")
+        d.addCallback(_set_no_helper)
+        def _check_no_helper(res):
+            html = res.replace('\n', ' ')
+            self.failUnless(re.search('<img (src="img/connected-not-configured.png" |alt="Not Configured" ){2}/>', html), res)
+        d.addCallback(_check_no_helper)
+
+        # enable helper, not connected
+        def _set_helper_not_connected(ign):
+            self.s.uploader.helper_furl = "pb://someHelper/secret"
+            self.s.uploader.helper_connected = False
+            return self.GET("/")
+        d.addCallback(_set_helper_not_connected)
+        def _check_helper_not_connected(res):
+            html = res.replace('\n', ' ')
+            self.failUnlessIn('<div class="furl">pb://someHelper/[censored]</div>', html)
+            self.failIfIn('pb://someHelper/secret', html)
+            self.failUnless(re.search('<img (src="img/connected-no.png" |alt="Disconnected" ){2}/>', html), res)
+        d.addCallback(_check_helper_not_connected)
+
+        # enable helper, connected
+        def _set_helper_connected(ign):
+            self.s.uploader.helper_furl = "pb://someHelper/secret"
+            self.s.uploader.helper_connected = True
+            return self.GET("/")
+        d.addCallback(_set_helper_connected)
+        def _check_helper_connected(res):
+            html = res.replace('\n', ' ')
+            self.failUnlessIn('<div class="furl">pb://someHelper/[censored]</div>', html)
+            self.failIfIn('pb://someHelper/secret', html)
+            self.failUnless(re.search('<img (src="img/connected-yes.png" |alt="Connected" ){2}/>', html), res)
+        d.addCallback(_check_helper_connected)
+        return d
 
+    def test_storage(self):
+        d = self.GET("/storage")
+        def _check(res):
+            self.failUnlessIn('Storage Server Status', res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
+            res_u = res.decode('utf-8')
+            self.failUnlessIn(u'<li>Server Nickname: <span class="nickname mine">fake_nickname \u263A</span></li>', res_u)
         d.addCallback(_check)
-        def _check2(res):
-            self.failUnless('Tahoe Reliability Tool' in res)
-            r = r'Probability of loss \(no maintenance\):\s+<span>0.033591'
-            self.failUnless(re.search(r, res), res)
-        d.addCallback(_check2)
         return d
 
     def test_status(self):
@@ -485,12 +771,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         ret_num = h.list_all_retrieve_statuses()[0].get_counter()
         d = self.GET("/status", followRedirect=True)
         def _check(res):
-            self.failUnless('Upload and Download Status' in res, res)
-            self.failUnless('"down-%d"' % dl_num in res, res)
-            self.failUnless('"up-%d"' % ul_num in res, res)
-            self.failUnless('"mapupdate-%d"' % mu_num in res, res)
-            self.failUnless('"publish-%d"' % pub_num in res, res)
-            self.failUnless('"retrieve-%d"' % ret_num in res, res)
+            self.failUnlessIn('Recent and Active Operations', res)
+            self.failUnlessIn('"down-%d"' % dl_num, res)
+            self.failUnlessIn('"up-%d"' % ul_num, res)
+            self.failUnlessIn('"mapupdate-%d"' % mu_num, res)
+            self.failUnlessIn('"publish-%d"' % pub_num, res)
+            self.failUnlessIn('"retrieve-%d"' % ret_num, res)
         d.addCallback(_check)
         d.addCallback(lambda res: self.GET("/status/?t=json"))
         def _check_json(res):
@@ -503,49 +789,74 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
         d.addCallback(lambda res: self.GET("/status/down-%d" % dl_num))
         def _check_dl(res):
-            self.failUnless("File Download Status" in res, res)
+            self.failUnlessIn("File Download Status", res)
         d.addCallback(_check_dl)
+        d.addCallback(lambda res: self.GET("/status/down-%d/event_json" % dl_num))
+        def _check_dl_json(res):
+            data = simplejson.loads(res)
+            self.failUnless(isinstance(data, dict))
+            self.failUnlessIn("read", data)
+            self.failUnlessEqual(data["read"][0]["length"], 120)
+            self.failUnlessEqual(data["segment"][0]["segment_length"], 100)
+            self.failUnlessEqual(data["segment"][2]["segment_number"], 2)
+            self.failUnlessEqual(data["segment"][2]["finish_time"], None)
+            phwr_id = base32.b2a(hashutil.tagged_hash("foo", "serverid_a")[:20])
+            cmpu_id = base32.b2a(hashutil.tagged_hash("foo", "serverid_b")[:20])
+            # serverids[] keys are strings, since that's what JSON does, but
+            # we'd really like them to be ints
+            self.failUnlessEqual(data["serverids"]["0"], "phwrsjte")
+            self.failUnless(data["serverids"].has_key("1"),
+                            str(data["serverids"]))
+            self.failUnlessEqual(data["serverids"]["1"], "cmpuvkjm",
+                                 str(data["serverids"]))
+            self.failUnlessEqual(data["server_info"][phwr_id]["short"],
+                                 "phwrsjte")
+            self.failUnlessEqual(data["server_info"][cmpu_id]["short"],
+                                 "cmpuvkjm")
+            self.failUnlessIn("dyhb", data)
+            self.failUnlessIn("misc", data)
+        d.addCallback(_check_dl_json)
         d.addCallback(lambda res: self.GET("/status/up-%d" % ul_num))
         def _check_ul(res):
-            self.failUnless("File Upload Status" in res, res)
+            self.failUnlessIn("File Upload Status", res)
         d.addCallback(_check_ul)
         d.addCallback(lambda res: self.GET("/status/mapupdate-%d" % mu_num))
         def _check_mapupdate(res):
-            self.failUnless("Mutable File Servermap Update Status" in res, res)
+            self.failUnlessIn("Mutable File Servermap Update Status", res)
         d.addCallback(_check_mapupdate)
         d.addCallback(lambda res: self.GET("/status/publish-%d" % pub_num))
         def _check_publish(res):
-            self.failUnless("Mutable File Publish Status" in res, res)
+            self.failUnlessIn("Mutable File Publish Status", res)
         d.addCallback(_check_publish)
         d.addCallback(lambda res: self.GET("/status/retrieve-%d" % ret_num))
         def _check_retrieve(res):
-            self.failUnless("Mutable File Retrieve Status" in res, res)
+            self.failUnlessIn("Mutable File Retrieve Status", res)
         d.addCallback(_check_retrieve)
 
         return d
 
     def test_status_numbers(self):
         drrm = status.DownloadResultsRendererMixin()
-        self.failUnlessEqual(drrm.render_time(None, None), "")
-        self.failUnlessEqual(drrm.render_time(None, 2.5), "2.50s")
-        self.failUnlessEqual(drrm.render_time(None, 0.25), "250ms")
-        self.failUnlessEqual(drrm.render_time(None, 0.0021), "2.1ms")
-        self.failUnlessEqual(drrm.render_time(None, 0.000123), "123us")
-        self.failUnlessEqual(drrm.render_rate(None, None), "")
-        self.failUnlessEqual(drrm.render_rate(None, 2500000), "2.50MBps")
-        self.failUnlessEqual(drrm.render_rate(None, 30100), "30.1kBps")
-        self.failUnlessEqual(drrm.render_rate(None, 123), "123Bps")
+        self.failUnlessReallyEqual(drrm.render_time(None, None), "")
+        self.failUnlessReallyEqual(drrm.render_time(None, 2.5), "2.50s")
+        self.failUnlessReallyEqual(drrm.render_time(None, 0.25), "250ms")
+        self.failUnlessReallyEqual(drrm.render_time(None, 0.0021), "2.1ms")
+        self.failUnlessReallyEqual(drrm.render_time(None, 0.000123), "123us")
+        self.failUnlessReallyEqual(drrm.render_rate(None, None), "")
+        self.failUnlessReallyEqual(drrm.render_rate(None, 2500000), "2.50MBps")
+        self.failUnlessReallyEqual(drrm.render_rate(None, 30100), "30.1kBps")
+        self.failUnlessReallyEqual(drrm.render_rate(None, 123), "123Bps")
 
         urrm = status.UploadResultsRendererMixin()
-        self.failUnlessEqual(urrm.render_time(None, None), "")
-        self.failUnlessEqual(urrm.render_time(None, 2.5), "2.50s")
-        self.failUnlessEqual(urrm.render_time(None, 0.25), "250ms")
-        self.failUnlessEqual(urrm.render_time(None, 0.0021), "2.1ms")
-        self.failUnlessEqual(urrm.render_time(None, 0.000123), "123us")
-        self.failUnlessEqual(urrm.render_rate(None, None), "")
-        self.failUnlessEqual(urrm.render_rate(None, 2500000), "2.50MBps")
-        self.failUnlessEqual(urrm.render_rate(None, 30100), "30.1kBps")
-        self.failUnlessEqual(urrm.render_rate(None, 123), "123Bps")
+        self.failUnlessReallyEqual(urrm.render_time(None, None), "")
+        self.failUnlessReallyEqual(urrm.render_time(None, 2.5), "2.50s")
+        self.failUnlessReallyEqual(urrm.render_time(None, 0.25), "250ms")
+        self.failUnlessReallyEqual(urrm.render_time(None, 0.0021), "2.1ms")
+        self.failUnlessReallyEqual(urrm.render_time(None, 0.000123), "123us")
+        self.failUnlessReallyEqual(urrm.render_rate(None, None), "")
+        self.failUnlessReallyEqual(urrm.render_rate(None, 2500000), "2.50MBps")
+        self.failUnlessReallyEqual(urrm.render_rate(None, 30100), "30.1kBps")
+        self.failUnlessReallyEqual(urrm.render_rate(None, 123), "123Bps")
 
     def test_GET_FILEURL(self):
         d = self.GET(self.public_url + "/foo/bar.txt")
@@ -557,11 +868,11 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.GET(self.public_url + "/foo/bar.txt", headers=headers,
                      return_response=True)
         def _got((res, status, headers)):
-            self.failUnlessEqual(int(status), 206)
+            self.failUnlessReallyEqual(int(status), 206)
             self.failUnless(headers.has_key("content-range"))
-            self.failUnlessEqual(headers["content-range"][0],
-                                 "bytes 1-10/%d" % len(self.BAR_CONTENTS))
-            self.failUnlessEqual(res, self.BAR_CONTENTS[1:11])
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes 1-10/%d" % len(self.BAR_CONTENTS))
+            self.failUnlessReallyEqual(res, self.BAR_CONTENTS[1:11])
         d.addCallback(_got)
         return d
 
@@ -571,24 +882,47 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.GET(self.public_url + "/foo/bar.txt", headers=headers,
                      return_response=True)
         def _got((res, status, headers)):
-            self.failUnlessEqual(int(status), 206)
+            self.failUnlessReallyEqual(int(status), 206)
+            self.failUnless(headers.has_key("content-range"))
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes 5-%d/%d" % (length-1, length))
+            self.failUnlessReallyEqual(res, self.BAR_CONTENTS[5:])
+        d.addCallback(_got)
+        return d
+
+    def test_GET_FILEURL_partial_end_range(self):
+        headers = {"range": "bytes=-5"}
+        length  = len(self.BAR_CONTENTS)
+        d = self.GET(self.public_url + "/foo/bar.txt", headers=headers,
+                     return_response=True)
+        def _got((res, status, headers)):
+            self.failUnlessReallyEqual(int(status), 206)
             self.failUnless(headers.has_key("content-range"))
-            self.failUnlessEqual(headers["content-range"][0],
-                                 "bytes 5-%d/%d" % (length-1, length))
-            self.failUnlessEqual(res, self.BAR_CONTENTS[5:])
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes %d-%d/%d" % (length-5, length-1, length))
+            self.failUnlessReallyEqual(res, self.BAR_CONTENTS[-5:])
         d.addCallback(_got)
         return d
 
+    def test_GET_FILEURL_partial_range_overrun(self):
+        headers = {"range": "bytes=100-200"}
+        d = self.shouldFail2(error.Error, "test_GET_FILEURL_range_overrun",
+                             "416 Requested Range not satisfiable",
+                             "First beyond end of file",
+                             self.GET, self.public_url + "/foo/bar.txt",
+                             headers=headers)
+        return d
+
     def test_HEAD_FILEURL_range(self):
         headers = {"range": "bytes=1-10"}
         d = self.HEAD(self.public_url + "/foo/bar.txt", headers=headers,
                      return_response=True)
         def _got((res, status, headers)):
-            self.failUnlessEqual(res, "")
-            self.failUnlessEqual(int(status), 206)
+            self.failUnlessReallyEqual(res, "")
+            self.failUnlessReallyEqual(int(status), 206)
             self.failUnless(headers.has_key("content-range"))
-            self.failUnlessEqual(headers["content-range"][0],
-                                 "bytes 1-10/%d" % len(self.BAR_CONTENTS))
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes 1-10/%d" % len(self.BAR_CONTENTS))
         d.addCallback(_got)
         return d
 
@@ -598,29 +932,53 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.HEAD(self.public_url + "/foo/bar.txt", headers=headers,
                      return_response=True)
         def _got((res, status, headers)):
-            self.failUnlessEqual(int(status), 206)
+            self.failUnlessReallyEqual(int(status), 206)
             self.failUnless(headers.has_key("content-range"))
-            self.failUnlessEqual(headers["content-range"][0],
-                                 "bytes 5-%d/%d" % (length-1, length))
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes 5-%d/%d" % (length-1, length))
         d.addCallback(_got)
         return d
 
+    def test_HEAD_FILEURL_partial_end_range(self):
+        headers = {"range": "bytes=-5"}
+        length  = len(self.BAR_CONTENTS)
+        d = self.HEAD(self.public_url + "/foo/bar.txt", headers=headers,
+                     return_response=True)
+        def _got((res, status, headers)):
+            self.failUnlessReallyEqual(int(status), 206)
+            self.failUnless(headers.has_key("content-range"))
+            self.failUnlessReallyEqual(headers["content-range"][0],
+                                       "bytes %d-%d/%d" % (length-5, length-1, length))
+        d.addCallback(_got)
+        return d
+
+    def test_HEAD_FILEURL_partial_range_overrun(self):
+        headers = {"range": "bytes=100-200"}
+        d = self.shouldFail2(error.Error, "test_HEAD_FILEURL_range_overrun",
+                             "416 Requested Range not satisfiable",
+                             "",
+                             self.HEAD, self.public_url + "/foo/bar.txt",
+                             headers=headers)
+        return d
+
     def test_GET_FILEURL_range_bad(self):
         headers = {"range": "BOGUS=fizbop-quarnak"}
-        d = self.shouldFail2(error.Error, "test_GET_FILEURL_range_bad",
-                             "400 Bad Request",
-                             "Syntactically invalid http range header",
-                             self.GET, self.public_url + "/foo/bar.txt",
-                             headers=headers)
+        d = self.GET(self.public_url + "/foo/bar.txt", headers=headers,
+                     return_response=True)
+        def _got((res, status, headers)):
+            self.failUnlessReallyEqual(int(status), 200)
+            self.failUnless(not headers.has_key("content-range"))
+            self.failUnlessReallyEqual(res, self.BAR_CONTENTS)
+        d.addCallback(_got)
         return d
 
     def test_HEAD_FILEURL(self):
         d = self.HEAD(self.public_url + "/foo/bar.txt", return_response=True)
         def _got((res, status, headers)):
-            self.failUnlessEqual(res, "")
-            self.failUnlessEqual(headers["content-length"][0],
-                                 str(len(self.BAR_CONTENTS)))
-            self.failUnlessEqual(headers["content-type"], ["text/plain"])
+            self.failUnlessReallyEqual(res, "")
+            self.failUnlessReallyEqual(headers["content-length"][0],
+                                       str(len(self.BAR_CONTENTS)))
+            self.failUnlessReallyEqual(headers["content-type"], ["text/plain"])
         d.addCallback(_got)
         return d
 
@@ -653,6 +1011,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                              self.PUT, base + "/@@name=/blah.txt", "")
         return d
 
+
     def test_GET_DIRURL_named_bad(self):
         base = "/file/%s" % urllib.quote(self._foo_uri)
         d = self.shouldFail2(error.Error, "test_PUT_DIRURL_named_bad",
@@ -695,6 +1054,24 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsBarDotTxt)
         return d
 
+    def test_GET_FILE_URI_mdmf(self):
+        base = "/uri/%s" % urllib.quote(self._quux_txt_uri)
+        d = self.GET(base)
+        d.addCallback(self.failUnlessIsQuuxDotTxt)
+        return d
+
+    def test_GET_FILE_URI_mdmf_extensions(self):
+        base = "/uri/%s" % urllib.quote("%s:RANDOMSTUFF" % self._quux_txt_uri)
+        d = self.GET(base)
+        d.addCallback(self.failUnlessIsQuuxDotTxt)
+        return d
+
+    def test_GET_FILE_URI_mdmf_readonly(self):
+        base = "/uri/%s" % urllib.quote(self._quux_txt_readonly_uri)
+        d = self.GET(base)
+        d.addCallback(self.failUnlessIsQuuxDotTxt)
+        return d
+
     def test_GET_FILE_URI_badchild(self):
         base = "/uri/%s/boguschild" % urllib.quote(self._bar_txt_uri)
         errmsg = "Files have no children, certainly not named 'boguschild'"
@@ -711,6 +1088,140 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                              self.PUT, base, "")
         return d
 
+    def test_PUT_FILE_URI_mdmf(self):
+        base = "/uri/%s" % urllib.quote(self._quux_txt_uri)
+        self._quux_new_contents = "new_contents"
+        d = self.GET(base)
+        d.addCallback(lambda res:
+            self.failUnlessIsQuuxDotTxt(res))
+        d.addCallback(lambda ignored:
+            self.PUT(base, self._quux_new_contents))
+        d.addCallback(lambda ignored:
+            self.GET(base))
+        d.addCallback(lambda res:
+            self.failUnlessReallyEqual(res, self._quux_new_contents))
+        return d
+
+    def test_PUT_FILE_URI_mdmf_extensions(self):
+        base = "/uri/%s" % urllib.quote("%s:EXTENSIONSTUFF" % self._quux_txt_uri)
+        self._quux_new_contents = "new_contents"
+        d = self.GET(base)
+        d.addCallback(lambda res: self.failUnlessIsQuuxDotTxt(res))
+        d.addCallback(lambda ignored: self.PUT(base, self._quux_new_contents))
+        d.addCallback(lambda ignored: self.GET(base))
+        d.addCallback(lambda res: self.failUnlessEqual(self._quux_new_contents,
+                                                       res))
+        return d
+
+    def test_PUT_FILE_URI_mdmf_readonly(self):
+        # We're not allowed to PUT things to a readonly cap.
+        base = "/uri/%s" % self._quux_txt_readonly_uri
+        d = self.GET(base)
+        d.addCallback(lambda res:
+            self.failUnlessIsQuuxDotTxt(res))
+        # What should we get here? We get a 500 error now; that's not right.
+        d.addCallback(lambda ignored:
+            self.shouldFail2(error.Error, "test_PUT_FILE_URI_mdmf_readonly",
+                             "400 Bad Request", "read-only cap",
+                             self.PUT, base, "new data"))
+        return d
+
+    def test_PUT_FILE_URI_sdmf_readonly(self):
+        # We're not allowed to put things to a readonly cap.
+        base = "/uri/%s" % self._baz_txt_readonly_uri
+        d = self.GET(base)
+        d.addCallback(lambda res:
+            self.failUnlessIsBazDotTxt(res))
+        d.addCallback(lambda ignored:
+            self.shouldFail2(error.Error, "test_PUT_FILE_URI_sdmf_readonly",
+                             "400 Bad Request", "read-only cap",
+                             self.PUT, base, "new_data"))
+        return d
+
+    def test_GET_etags(self):
+
+        def _check_etags(uri):
+            d1 = _get_etag(uri)
+            d2 = _get_etag(uri, 'json')
+            d = defer.DeferredList([d1, d2], consumeErrors=True)
+            def _check(results):
+                # All deferred must succeed
+                self.failUnless(all([r[0] for r in results]))
+                # the etag for the t=json form should be just like the etag
+                # fo the default t='' form, but with a 'json' suffix
+                self.failUnlessEqual(results[0][1] + 'json', results[1][1])
+            d.addCallback(_check)
+            return d
+
+        def _get_etag(uri, t=''):
+            targetbase = "/uri/%s?t=%s" % (urllib.quote(uri.strip()), t)
+            d = self.GET(targetbase, return_response=True, followRedirect=True)
+            def _just_the_etag(result):
+                data, response, headers = result
+                etag = headers['etag'][0]
+                if uri.startswith('URI:DIR'):
+                    self.failUnless(etag.startswith('DIR:'), etag)
+                return etag
+            return d.addCallback(_just_the_etag)
+
+        # Check that etags work with immutable directories
+        (newkids, caps) = self._create_immutable_children()
+        d = self.POST2(self.public_url + "/foo/newdir?t=mkdir-immutable",
+                      simplejson.dumps(newkids))
+        def _stash_immdir_uri(uri):
+            self._immdir_uri = uri
+            return uri
+        d.addCallback(_stash_immdir_uri)
+        d.addCallback(_check_etags)
+
+        # Check that etags work with immutable files
+        d.addCallback(lambda _: _check_etags(self._bar_txt_uri))
+
+        # use the ETag on GET
+        def _check_match(ign):
+            uri = "/uri/%s" % self._bar_txt_uri
+            d = self.GET(uri, return_response=True)
+            # extract the ETag
+            d.addCallback(lambda (data, code, headers):
+                          headers['etag'][0])
+            # do a GET that's supposed to match the ETag
+            d.addCallback(lambda etag:
+                          self.GET(uri, return_response=True,
+                                   headers={"If-None-Match": etag}))
+            # make sure it short-circuited (304 instead of 200)
+            d.addCallback(lambda (data, code, headers):
+                          self.failUnlessEqual(int(code), http.NOT_MODIFIED))
+            return d
+        d.addCallback(_check_match)
+
+        def _no_etag(uri, t):
+            target = "/uri/%s?t=%s" % (uri, t)
+            d = self.GET(target, return_response=True, followRedirect=True)
+            d.addCallback(lambda (data, code, headers):
+                          self.failIf("etag" in headers, target))
+            return d
+        def _yes_etag(uri, t):
+            target = "/uri/%s?t=%s" % (uri, t)
+            d = self.GET(target, return_response=True, followRedirect=True)
+            d.addCallback(lambda (data, code, headers):
+                          self.failUnless("etag" in headers, target))
+            return d
+
+        d.addCallback(lambda ign: _yes_etag(self._bar_txt_uri, ""))
+        d.addCallback(lambda ign: _yes_etag(self._bar_txt_uri, "json"))
+        d.addCallback(lambda ign: _yes_etag(self._bar_txt_uri, "uri"))
+        d.addCallback(lambda ign: _yes_etag(self._bar_txt_uri, "readonly-uri"))
+        d.addCallback(lambda ign: _no_etag(self._bar_txt_uri, "info"))
+
+        d.addCallback(lambda ign: _yes_etag(self._immdir_uri, ""))
+        d.addCallback(lambda ign: _yes_etag(self._immdir_uri, "json"))
+        d.addCallback(lambda ign: _yes_etag(self._immdir_uri, "uri"))
+        d.addCallback(lambda ign: _yes_etag(self._immdir_uri, "readonly-uri"))
+        d.addCallback(lambda ign: _no_etag(self._immdir_uri, "info"))
+        d.addCallback(lambda ign: _no_etag(self._immdir_uri, "rename-form"))
+
+        return d
+
     # TODO: version of this with a Unicode filename
     def test_GET_FILEURL_save(self):
         d = self.GET(self.public_url + "/foo/bar.txt?filename=bar.txt&save=true",
@@ -727,6 +1238,41 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addBoth(self.should404, "test_GET_FILEURL_missing")
         return d
 
+    def test_GET_FILEURL_info_mdmf(self):
+        d = self.GET("/uri/%s?t=info" % self._quux_txt_uri)
+        def _got(res):
+            self.failUnlessIn("mutable file (mdmf)", res)
+            self.failUnlessIn(self._quux_txt_uri, res)
+            self.failUnlessIn(self._quux_txt_readonly_uri, res)
+        d.addCallback(_got)
+        return d
+
+    def test_GET_FILEURL_info_mdmf_readonly(self):
+        d = self.GET("/uri/%s?t=info" % self._quux_txt_readonly_uri)
+        def _got(res):
+            self.failUnlessIn("mutable file (mdmf)", res)
+            self.failIfIn(self._quux_txt_uri, res)
+            self.failUnlessIn(self._quux_txt_readonly_uri, res)
+        d.addCallback(_got)
+        return d
+
+    def test_GET_FILEURL_info_sdmf(self):
+        d = self.GET("/uri/%s?t=info" % self._baz_txt_uri)
+        def _got(res):
+            self.failUnlessIn("mutable file (sdmf)", res)
+            self.failUnlessIn(self._baz_txt_uri, res)
+        d.addCallback(_got)
+        return d
+
+    def test_GET_FILEURL_info_mdmf_extensions(self):
+        d = self.GET("/uri/%s:STUFF?t=info" % self._quux_txt_uri)
+        def _got(res):
+            self.failUnlessIn("mutable file (mdmf)", res)
+            self.failUnlessIn(self._quux_txt_uri, res)
+            self.failUnlessIn(self._quux_txt_readonly_uri, res)
+        d.addCallback(_got)
+        return d
+
     def test_PUT_overwrite_only_files(self):
         # create a directory, put a file in that directory.
         contents, n, filecap = self.makefile(8)
@@ -750,7 +1296,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_PUT_NEWFILEURL(self):
         d = self.PUT(self.public_url + "/foo/new.txt", self.NEWFILE_CONTENTS)
         # TODO: we lose the response code, so we can't check this
-        #self.failUnlessEqual(responsecode, 201)
+        #self.failUnlessReallyEqual(responsecode, 201)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node, u"new.txt")
         d.addCallback(lambda res:
                       self.failUnlessChildContentsAre(self._foo_node, u"new.txt",
@@ -761,13 +1307,42 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.PUT(self.public_url + "/foo/new.txt?mutable=false",
                      self.NEWFILE_CONTENTS)
         # TODO: we lose the response code, so we can't check this
-        #self.failUnlessEqual(responsecode, 201)
+        #self.failUnlessReallyEqual(responsecode, 201)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node, u"new.txt")
         d.addCallback(lambda res:
                       self.failUnlessChildContentsAre(self._foo_node, u"new.txt",
                                                       self.NEWFILE_CONTENTS))
         return d
 
+    def test_PUT_NEWFILEURL_unlinked_mdmf(self):
+        # this should get us a few segments of an MDMF mutable file,
+        # which we can then test for.
+        contents = self.NEWFILE_CONTENTS * 300000
+        d = self.PUT("/uri?format=mdmf",
+                     contents)
+        def _got_filecap(filecap):
+            self.failUnless(filecap.startswith("URI:MDMF"))
+            return filecap
+        d.addCallback(_got_filecap)
+        d.addCallback(lambda filecap: self.GET("/uri/%s?t=json" % filecap))
+        d.addCallback(lambda json: self.failUnlessIn("MDMF", json))
+        return d
+
+    def test_PUT_NEWFILEURL_unlinked_sdmf(self):
+        contents = self.NEWFILE_CONTENTS * 300000
+        d = self.PUT("/uri?format=sdmf",
+                     contents)
+        d.addCallback(lambda filecap: self.GET("/uri/%s?t=json" % filecap))
+        d.addCallback(lambda json: self.failUnlessIn("SDMF", json))
+        return d
+
+    def test_PUT_NEWFILEURL_unlinked_bad_format(self):
+        contents = self.NEWFILE_CONTENTS * 300000
+        return self.shouldHTTPError("PUT_NEWFILEURL_unlinked_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.PUT, "/uri?format=foo",
+                                    contents)
+
     def test_PUT_NEWFILEURL_range_bad(self):
         headers = {"content-range": "bytes 1-10/%d" % len(self.NEWFILE_CONTENTS)}
         target = self.public_url + "/foo/new.txt"
@@ -785,7 +1360,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.PUT(self.public_url + "/foo/new.txt?mutable=true",
                      self.NEWFILE_CONTENTS)
         # TODO: we lose the response code, so we can't check this
-        #self.failUnlessEqual(responsecode, 201)
+        #self.failUnlessReallyEqual(responsecode, 201)
         def _check_uri(res):
             u = uri.from_string_mutable_filenode(res)
             self.failUnless(u.is_mutable())
@@ -800,18 +1375,16 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_PUT_NEWFILEURL_mutable_toobig(self):
-        d = self.shouldFail2(error.Error, "test_PUT_NEWFILEURL_mutable_toobig",
-                             "413 Request Entity Too Large",
-                             "SDMF is limited to one segment, and 10001 > 10000",
-                             self.PUT,
-                             self.public_url + "/foo/new.txt?mutable=true",
-                             "b" * (self.s.MUTABLE_SIZELIMIT+1))
+        # It is okay to upload large mutable files, so we should be able
+        # to do that.
+        d = self.PUT(self.public_url + "/foo/new.txt?mutable=true",
+                     "b" * (self.s.MUTABLE_SIZELIMIT + 1))
         return d
 
     def test_PUT_NEWFILEURL_replace(self):
         d = self.PUT(self.public_url + "/foo/bar.txt", self.NEWFILE_CONTENTS)
         # TODO: we lose the response code, so we can't check this
-        #self.failUnlessEqual(responsecode, 200)
+        #self.failUnlessReallyEqual(responsecode, 200)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node, u"bar.txt")
         d.addCallback(lambda res:
                       self.failUnlessChildContentsAre(self._foo_node, u"bar.txt",
@@ -880,11 +1453,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def failUnlessHasBarDotTxtMetadata(self, res):
         data = simplejson.loads(res)
         self.failUnless(isinstance(data, list))
-        self.failUnless(data[1].has_key("metadata"))
-        self.failUnless(data[1]["metadata"].has_key("ctime"))
-        self.failUnless(data[1]["metadata"].has_key("mtime"))
-        self.failUnlessEqual(data[1]["metadata"]["ctime"],
-                             self._bar_txt_metadata["ctime"])
+        self.failUnlessIn("metadata", data[1])
+        self.failUnlessIn("tahoe", data[1]["metadata"])
+        self.failUnlessIn("linkcrtime", data[1]["metadata"]["tahoe"])
+        self.failUnlessIn("linkmotime", data[1]["metadata"]["tahoe"])
+        self.failUnlessReallyEqual(data[1]["metadata"]["tahoe"]["linkcrtime"],
+                                   self._bar_txt_metadata["tahoe"]["linkcrtime"])
 
     def test_GET_FILEURL_json(self):
         # twisted.web.http.parse_qs ignores any query args without an '=', so
@@ -899,6 +1473,35 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(_check1)
         return d
 
+    def test_GET_FILEURL_json_mutable_type(self):
+        # The JSON should include format, which says whether the
+        # file is SDMF or MDMF
+        d = self.PUT("/uri?format=mdmf",
+                     self.NEWFILE_CONTENTS * 300000)
+        d.addCallback(lambda filecap: self.GET("/uri/%s?t=json" % filecap))
+        def _got_json(json, version):
+            data = simplejson.loads(json)
+            assert "filenode" == data[0]
+            data = data[1]
+            assert isinstance(data, dict)
+
+            self.failUnlessIn("format", data)
+            self.failUnlessEqual(data["format"], version)
+
+        d.addCallback(_got_json, "MDMF")
+        # Now make an SDMF file and check that it is reported correctly.
+        d.addCallback(lambda ignored:
+            self.PUT("/uri?format=sdmf",
+                      self.NEWFILE_CONTENTS * 300000))
+        d.addCallback(lambda filecap: self.GET("/uri/%s?t=json" % filecap))
+        d.addCallback(_got_json, "SDMF")
+        return d
+
+    def test_GET_FILEURL_json_mdmf(self):
+        d = self.GET("/uri/%s?t=json" % urllib.quote(self._quux_txt_uri))
+        d.addCallback(self.failUnlessIsQuuxJSON)
+        return d
+
     def test_GET_FILEURL_json_missing(self):
         d = self.GET(self.public_url + "/foo/missing?json")
         d.addBoth(self.should404, "test_GET_FILEURL_json_missing")
@@ -907,13 +1510,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_GET_FILEURL_uri(self):
         d = self.GET(self.public_url + "/foo/bar.txt?t=uri")
         def _check(res):
-            self.failUnlessEqual(res, self._bar_txt_uri)
+            self.failUnlessReallyEqual(res, self._bar_txt_uri)
         d.addCallback(_check)
         d.addCallback(lambda res:
                       self.GET(self.public_url + "/foo/bar.txt?t=readonly-uri"))
         def _check2(res):
             # for now, for files, uris and readonly-uris are the same
-            self.failUnlessEqual(res, self._bar_txt_uri)
+            self.failUnlessReallyEqual(res, self._bar_txt_uri)
         d.addCallback(_check2)
         return d
 
@@ -924,19 +1527,76 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                  self.public_url + "/foo/bar.txt?t=bogus")
         return d
 
+    def test_CSS_FILE(self):
+        d = self.GET("/tahoe.css", followRedirect=True)
+        def _check(res):
+            CSS_STYLE=re.compile('toolbar\s{.+text-align:\scenter.+toolbar-item.+display:\sinline',re.DOTALL)
+            self.failUnless(CSS_STYLE.search(res), res)
+        d.addCallback(_check)
+        return d
+
     def test_GET_FILEURL_uri_missing(self):
         d = self.GET(self.public_url + "/foo/missing?t=uri")
         d.addBoth(self.should404, "test_GET_FILEURL_uri_missing")
         return d
 
+    def _check_upload_and_mkdir_forms(self, html):
+        # We should have a form to create a file, with radio buttons that allow
+        # the user to toggle whether it is a CHK/LIT (default), SDMF, or MDMF file.
+        self.failUnless(re.search('<input (name="t" |value="upload" |type="hidden" ){3}/>', html), html)
+        self.failUnless(re.search('<input [^/]*id="upload-chk"', html), html)
+        self.failUnless(re.search('<input [^/]*id="upload-sdmf"', html), html)
+        self.failUnless(re.search('<input [^/]*id="upload-mdmf"', html), html)
+
+        # We should also have the ability to create a mutable directory, with
+        # radio buttons that allow the user to toggle whether it is an SDMF (default)
+        # or MDMF directory.
+        self.failUnless(re.search('<input (name="t" |value="mkdir" |type="hidden" ){3}/>', html), html)
+        self.failUnless(re.search('<input [^/]*id="mkdir-sdmf"', html), html)
+        self.failUnless(re.search('<input [^/]*id="mkdir-mdmf"', html), html)
+
+        self.failUnlessIn(FAVICON_MARKUP, html)
+
+    def test_GET_DIRECTORY_html(self):
+        d = self.GET(self.public_url + "/foo", followRedirect=True)
+        def _check(html):
+            self.failUnlessIn('<li class="toolbar-item"><a href="../../..">Return to Welcome page</a></li>', html)
+            self._check_upload_and_mkdir_forms(html)
+            self.failUnlessIn("quux", html)
+        d.addCallback(_check)
+        return d
+
+    def test_GET_DIRECTORY_html_filenode_encoding(self):
+        d = self.GET(self.public_url + "/foo", followRedirect=True)
+        def _check(html):
+            # Check if encoded entries are there
+            self.failUnlessIn('@@named=/' + self._htmlname_urlencoded + '">'
+                              + self._htmlname_escaped + '</a>', html)
+            self.failUnlessIn('value="' + self._htmlname_escaped_attr + '"', html)
+            self.failIfIn(self._htmlname_escaped_double, html)
+            # Make sure that Nevow escaping actually works by checking for unsafe characters
+            # and that '&' is escaped.
+            for entity in '<>':
+                self.failUnlessIn(entity, self._htmlname_raw)
+                self.failIfIn(entity, self._htmlname_escaped)
+            self.failUnlessIn('&', re.sub(r'&(amp|lt|gt|quot|apos);', '', self._htmlname_raw))
+            self.failIfIn('&', re.sub(r'&(amp|lt|gt|quot|apos);', '', self._htmlname_escaped))
+        d.addCallback(_check)
+        return d
+
+    def test_GET_root_html(self):
+        d = self.GET("/")
+        d.addCallback(self._check_upload_and_mkdir_forms)
+        return d
+
     def test_GET_DIRURL(self):
         # the addSlash means we get a redirect here
         # from /uri/$URI/foo/ , we need ../../../ to get back to the root
         ROOT = "../../.."
         d = self.GET(self.public_url + "/foo", followRedirect=True)
         def _check(res):
-            self.failUnless(('<a href="%s">Return to Welcome page' % ROOT)
-                            in res, res)
+            self.failUnlessIn('<a href="%s">Return to Welcome page' % ROOT, res)
+
             # the FILE reference points to a URI, but it should end in bar.txt
             bar_url = ("%s/file/%s/@@named=/bar.txt" %
                        (ROOT, urllib.quote(self._bar_txt_uri)))
@@ -944,24 +1604,28 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                r'\s+<td>',
                                r'<a href="%s">bar.txt</a>' % bar_url,
                                r'</td>',
-                               r'\s+<td>%d</td>' % len(self.BAR_CONTENTS),
+                               r'\s+<td align="right">%d</td>' % len(self.BAR_CONTENTS),
                                ])
             self.failUnless(re.search(get_bar, res), res)
-            for line in res.split("\n"):
-                # find the line that contains the delete button for bar.txt
-                if ("form action" in line and
-                    'value="delete"' in line and
-                    'value="bar.txt"' in line):
-                    # the form target should use a relative URL
-                    foo_url = urllib.quote("%s/uri/%s/" % (ROOT, self._foo_uri))
-                    self.failUnless(('action="%s"' % foo_url) in line, line)
-                    # and the when_done= should too
-                    #done_url = urllib.quote(???)
-                    #self.failUnless(('name="when_done" value="%s"' % done_url)
-                    #                in line, line)
-                    break
-            else:
-                self.fail("unable to find delete-bar.txt line", res)
+            for label in ['unlink', 'rename/relink']:
+                for line in res.split("\n"):
+                    # find the line that contains the relevant button for bar.txt
+                    if ("form action" in line and
+                        ('value="%s"' % (label,)) in line and
+                        'value="bar.txt"' in line):
+                        # the form target should use a relative URL
+                        foo_url = urllib.quote("%s/uri/%s/" % (ROOT, self._foo_uri))
+                        self.failUnlessIn('action="%s"' % foo_url, line)
+                        # and the when_done= should too
+                        #done_url = urllib.quote(???)
+                        #self.failUnlessIn('name="when_done" value="%s"' % done_url, line)
+
+                        # 'unlink' needs to use POST because it directly has a side effect
+                        if label == 'unlink':
+                            self.failUnlessIn('method="post"', line)
+                        break
+                else:
+                    self.fail("unable to find '%s bar.txt' line" % (label,))
 
             # the DIR reference just points to a URI
             sub_url = ("%s/uri/%s/" % (ROOT, urllib.quote(self._sub_uri)))
@@ -970,12 +1634,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             self.failUnless(re.search(get_sub, res), res)
         d.addCallback(_check)
 
-        # look at a readonly directory 
+        # look at a readonly directory
         d.addCallback(lambda res:
                       self.GET(self.public_url + "/reedownlee", followRedirect=True))
         def _check2(res):
-            self.failUnless("(read-only)" in res, res)
-            self.failIf("Upload a file" in res, res)
+            self.failUnlessIn("(read-only)", res)
+            self.failIfIn("Upload a file", res)
         d.addCallback(_check2)
 
         # and at a directory that contains a readonly directory
@@ -989,8 +1653,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         # and an empty directory
         d.addCallback(lambda res: self.GET(self.public_url + "/foo/empty/"))
         def _check4(res):
-            self.failUnless("directory is empty" in res, res)
-            MKDIR_BUTTON_RE=re.compile('<input type="hidden" name="t" value="mkdir" />.*<legend class="freeform-form-label">Create a new directory in this directory</legend>.*<input type="submit" value="Create" />', re.I)
+            self.failUnlessIn("directory is empty", res)
+            MKDIR_BUTTON_RE=re.compile('<input (type="hidden" |name="t" |value="mkdir" ){3}/>.*<legend class="freeform-form-label">Create a new directory in this directory</legend>.*<input (type="submit" |class="btn" |value="Create" ){3}/>', re.I)
             self.failUnless(MKDIR_BUTTON_RE.search(res), res)
         d.addCallback(_check4)
 
@@ -999,7 +1663,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda res:
                       self.GET("/uri/" + tiny_litdir_uri + "/", followRedirect=True))
         def _check5(res):
-            self.failUnless('(immutable)' in res, res)
+            self.failUnlessIn('(immutable)', res)
             self.failUnless(re.search('<td>FILE</td>'
                                       r'\s+<td><a href="[\.\/]+/file/URI%3ALIT%3Akrugkidfnzsc4/@@named=/short">short</a></td>', res), res)
         d.addCallback(_check5)
@@ -1018,6 +1682,35 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsFooJSON)
         return d
 
+    def test_GET_DIRURL_json_format(self):
+        d = self.PUT(self.public_url + \
+                     "/foo/sdmf.txt?format=sdmf",
+                     self.NEWFILE_CONTENTS * 300000)
+        d.addCallback(lambda ignored:
+            self.PUT(self.public_url + \
+                     "/foo/mdmf.txt?format=mdmf",
+                     self.NEWFILE_CONTENTS * 300000))
+        # Now we have an MDMF and SDMF file in the directory. If we GET
+        # its JSON, we should see their encodings.
+        d.addCallback(lambda ignored:
+            self.GET(self.public_url + "/foo?t=json"))
+        def _got_json(json):
+            data = simplejson.loads(json)
+            assert data[0] == "dirnode"
+
+            data = data[1]
+            kids = data['children']
+
+            mdmf_data = kids['mdmf.txt'][1]
+            self.failUnlessIn("format", mdmf_data)
+            self.failUnlessEqual(mdmf_data["format"], "MDMF")
+
+            sdmf_data = kids['sdmf.txt'][1]
+            self.failUnlessIn("format", sdmf_data)
+            self.failUnlessEqual(sdmf_data["format"], "SDMF")
+        d.addCallback(_got_json)
+        return d
+
 
     def test_POST_DIRURL_manifest_no_ophandle(self):
         d = self.shouldFail2(error.Error,
@@ -1037,10 +1730,11 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             return d
         d.addCallback(getman, None)
         def _got_html(manifest):
-            self.failUnless("Manifest of SI=" in manifest)
-            self.failUnless("<td>sub</td>" in manifest)
-            self.failUnless(self._sub_uri in manifest)
-            self.failUnless("<td>sub/baz.txt</td>" in manifest)
+            self.failUnlessIn("Manifest of SI=", manifest)
+            self.failUnlessIn("<td>sub</td>", manifest)
+            self.failUnlessIn(self._sub_uri, manifest)
+            self.failUnlessIn("<td>sub/baz.txt</td>", manifest)
+            self.failUnlessIn(FAVICON_MARKUP, manifest)
         d.addCallback(_got_html)
 
         # both t=status and unadorned GET should be identical
@@ -1051,8 +1745,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(_got_html)
         d.addCallback(getman, "text")
         def _got_text(manifest):
-            self.failUnless("\nsub " + self._sub_uri + "\n" in manifest)
-            self.failUnless("\nsub/baz.txt URI:CHK:" in manifest)
+            self.failUnlessIn("\nsub " + self._sub_uri + "\n", manifest)
+            self.failUnlessIn("\nsub/baz.txt URI:CHK:", manifest)
         d.addCallback(_got_text)
         d.addCallback(getman, "JSON")
         def _got_json(res):
@@ -1060,13 +1754,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             got = {}
             for (path_list, cap) in data:
                 got[tuple(path_list)] = cap
-            self.failUnlessEqual(got[(u"sub",)], self._sub_uri)
-            self.failUnless((u"sub",u"baz.txt") in got)
-            self.failUnless("finished" in res)
-            self.failUnless("origin" in res)
-            self.failUnless("storage-index" in res)
-            self.failUnless("verifycaps" in res)
-            self.failUnless("stats" in res)
+            self.failUnlessReallyEqual(to_str(got[(u"sub",)]), self._sub_uri)
+            self.failUnlessIn((u"sub", u"baz.txt"), got)
+            self.failUnlessIn("finished", res)
+            self.failUnlessIn("origin", res)
+            self.failUnlessIn("storage-index", res)
+            self.failUnlessIn("verifycaps", res)
+            self.failUnlessIn("stats", res)
         d.addCallback(_got_json)
         return d
 
@@ -1084,7 +1778,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.wait_for_operation, "126")
         d.addCallback(self.get_operation_results, "126", "json")
         def _got_json(data):
-            self.failUnlessEqual(data["finished"], True)
+            self.failUnlessReallyEqual(data["finished"], True)
             size = data["size"]
             self.failUnless(size > 1000)
         d.addCallback(_got_json)
@@ -1112,24 +1806,24 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.wait_for_operation, "127")
         d.addCallback(self.get_operation_results, "127", "json")
         def _got_json(stats):
-            expected = {"count-immutable-files": 3,
-                        "count-mutable-files": 0,
+            expected = {"count-immutable-files": 4,
+                        "count-mutable-files": 2,
                         "count-literal-files": 0,
-                        "count-files": 3,
+                        "count-files": 6,
                         "count-directories": 3,
-                        "size-immutable-files": 57,
+                        "size-immutable-files": 76,
                         "size-literal-files": 0,
                         #"size-directories": 1912, # varies
                         #"largest-directory": 1590,
-                        "largest-directory-children": 5,
+                        "largest-directory-children": 8,
                         "largest-immutable-file": 19,
                         }
             for k,v in expected.iteritems():
-                self.failUnlessEqual(stats[k], v,
-                                     "stats[%s] was %s, not %s" %
-                                     (k, stats[k], v))
-            self.failUnlessEqual(stats["size-files-histogram"],
-                                 [ [11, 31, 3] ])
+                self.failUnlessReallyEqual(stats[k], v,
+                                           "stats[%s] was %s, not %s" %
+                                           (k, stats[k], v))
+            self.failUnlessReallyEqual(stats["size-files-histogram"],
+                                       [ [11, 31, 4] ])
         d.addCallback(_got_json)
         return d
 
@@ -1138,17 +1832,18 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         def _check(res):
             self.failUnless(res.endswith("\n"))
             units = [simplejson.loads(t) for t in res[:-1].split("\n")]
-            self.failUnlessEqual(len(units), 7)
+            self.failUnlessReallyEqual(len(units), 10)
             self.failUnlessEqual(units[-1]["type"], "stats")
             first = units[0]
             self.failUnlessEqual(first["path"], [])
-            self.failUnlessEqual(first["cap"], self._foo_uri)
+            self.failUnlessReallyEqual(to_str(first["cap"]), self._foo_uri)
             self.failUnlessEqual(first["type"], "directory")
-            baz = [u for u in units[:-1] if u["cap"] == self._baz_file_uri][0]
+            baz = [u for u in units[:-1] if to_str(u["cap"]) == self._baz_file_uri][0]
             self.failUnlessEqual(baz["path"], ["sub", "baz.txt"])
             self.failIfEqual(baz["storage-index"], None)
             self.failIfEqual(baz["verifycap"], None)
             self.failIfEqual(baz["repaircap"], None)
+            # XXX: Add quux and baz to this test.
             return
         d.addCallback(_check)
         return d
@@ -1156,14 +1851,14 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_GET_DIRURL_uri(self):
         d = self.GET(self.public_url + "/foo?t=uri")
         def _check(res):
-            self.failUnlessEqual(res, self._foo_uri)
+            self.failUnlessReallyEqual(to_str(res), self._foo_uri)
         d.addCallback(_check)
         return d
 
     def test_GET_DIRURL_readonly_uri(self):
         d = self.GET(self.public_url + "/foo?t=readonly-uri")
         def _check(res):
-            self.failUnlessEqual(res, self._foo_readonly_uri)
+            self.failUnlessReallyEqual(to_str(res), self._foo_readonly_uri)
         d.addCallback(_check)
         return d
 
@@ -1175,6 +1870,31 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessNodeKeysAre, [])
         return d
 
+    def test_PUT_NEWDIRURL_mdmf(self):
+        d = self.PUT(self.public_url + "/foo/newdir?t=mkdir&format=mdmf", "")
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), MDMF_VERSION))
+        return d
+
+    def test_PUT_NEWDIRURL_sdmf(self):
+        d = self.PUT(self.public_url + "/foo/newdir?t=mkdir&format=sdmf",
+                     "")
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), SDMF_VERSION))
+        return d
+
+    def test_PUT_NEWDIRURL_bad_format(self):
+        return self.shouldHTTPError("PUT_NEWDIRURL_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.PUT, self.public_url +
+                                    "/foo/newdir=?t=mkdir&format=foo", "")
+
     def test_POST_NEWDIRURL(self):
         d = self.POST2(self.public_url + "/foo/newdir?t=mkdir", "")
         d.addCallback(lambda res:
@@ -1183,21 +1903,53 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessNodeKeysAre, [])
         return d
 
+    def test_POST_NEWDIRURL_mdmf(self):
+        d = self.POST2(self.public_url + "/foo/newdir?t=mkdir&format=mdmf", "")
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), MDMF_VERSION))
+        return d
+
+    def test_POST_NEWDIRURL_sdmf(self):
+        d = self.POST2(self.public_url + "/foo/newdir?t=mkdir&format=sdmf", "")
+        d.addCallback(lambda res:
+            self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), SDMF_VERSION))
+        return d
+
+    def test_POST_NEWDIRURL_bad_format(self):
+        return self.shouldHTTPError("POST_NEWDIRURL_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST2, self.public_url + \
+                                    "/foo/newdir?t=mkdir&format=foo", "")
+
     def test_POST_NEWDIRURL_emptyname(self):
         # an empty pathname component (i.e. a double-slash) is disallowed
-        d = self.shouldFail2(error.Error, "test_POST_NEWDIRURL_emptyname",
+        d = self.shouldFail2(error.Error, "POST_NEWDIRURL_emptyname",
                              "400 Bad Request",
                              "The webapi does not allow empty pathname components, i.e. a double slash",
                              self.POST, self.public_url + "//?t=mkdir")
         return d
 
-    def test_POST_NEWDIRURL_initial_children(self):
+    def _do_POST_NEWDIRURL_initial_children_test(self, version=None):
         (newkids, caps) = self._create_initial_children()
-        d = self.POST2(self.public_url + "/foo/newdir?t=mkdir-with-children",
+        query = "/foo/newdir?t=mkdir-with-children"
+        if version == MDMF_VERSION:
+            query += "&format=mdmf"
+        elif version == SDMF_VERSION:
+            query += "&format=sdmf"
+        else:
+            version = SDMF_VERSION # for later
+        d = self.POST2(self.public_url + query,
                        simplejson.dumps(newkids))
         def _check(uri):
             n = self.s.create_node_from_uri(uri.strip())
             d2 = self.failUnlessNodeKeysAre(n, newkids.keys())
+            self.failUnlessEqual(n._node.get_version(), version)
             d2.addCallback(lambda ign:
                            self.failUnlessROChildURIIs(n, u"child-imm",
                                                        caps['filecap1']))
@@ -1235,6 +1987,23 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessROChildURIIs, u"child-imm", caps['filecap1'])
         return d
 
+    def test_POST_NEWDIRURL_initial_children(self):
+        return self._do_POST_NEWDIRURL_initial_children_test()
+
+    def test_POST_NEWDIRURL_initial_children_mdmf(self):
+        return self._do_POST_NEWDIRURL_initial_children_test(MDMF_VERSION)
+
+    def test_POST_NEWDIRURL_initial_children_sdmf(self):
+        return self._do_POST_NEWDIRURL_initial_children_test(SDMF_VERSION)
+
+    def test_POST_NEWDIRURL_initial_children_bad_format(self):
+        (newkids, caps) = self._create_initial_children()
+        return self.shouldHTTPError("POST_NEWDIRURL_initial_children_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST2, self.public_url + \
+                                    "/foo/newdir?t=mkdir-with-children&format=foo",
+                                    simplejson.dumps(newkids))
+
     def test_POST_NEWDIRURL_immutable(self):
         (newkids, caps) = self._create_immutable_children()
         d = self.POST2(self.public_url + "/foo/newdir?t=mkdir-immutable",
@@ -1305,25 +2074,6 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessNodeKeysAre, [u"baz.txt"])
         return d
 
-    def test_PUT_NEWDIRURL_mkdir_p(self):
-        d = defer.succeed(None)
-        d.addCallback(lambda res: self.POST(self.public_url + "/foo", t='mkdir', name='mkp'))
-        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._foo_node, u"mkp"))
-        d.addCallback(lambda res: self._foo_node.get(u"mkp"))
-        def mkdir_p(mkpnode):
-            url = '/uri/%s?t=mkdir-p&path=/sub1/sub2' % urllib.quote(mkpnode.get_uri())
-            d = self.POST(url)
-            def made_subsub(ssuri):
-                d = self._foo_node.get_child_at_path(u"mkp/sub1/sub2")
-                d.addCallback(lambda ssnode: self.failUnlessEqual(ssnode.get_uri(), ssuri))
-                d = self.POST(url)
-                d.addCallback(lambda uri2: self.failUnlessEqual(uri2, ssuri))
-                return d
-            d.addCallback(made_subsub)
-            return d
-        d.addCallback(mkdir_p)
-        return d
-
     def test_PUT_NEWDIRURL_mkdirs(self):
         d = self.PUT(self.public_url + "/foo/subdir/newdir?t=mkdir", "")
         d.addCallback(lambda res:
@@ -1335,6 +2085,49 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessNodeKeysAre, [])
         return d
 
+    def test_PUT_NEWDIRURL_mkdirs_mdmf(self):
+        d = self.PUT(self.public_url + "/foo/subdir/newdir?t=mkdir&format=mdmf", "")
+        d.addCallback(lambda ignored:
+            self.failUnlessNodeHasChild(self._foo_node, u"subdir"))
+        d.addCallback(lambda ignored:
+            self.failIfNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda ignored:
+            self._foo_node.get_child_at_path(u"subdir"))
+        def _got_subdir(subdir):
+            # XXX: What we want?
+            #self.failUnlessEqual(subdir._node.get_version(), MDMF_VERSION)
+            self.failUnlessNodeHasChild(subdir, u"newdir")
+            return subdir.get_child_at_path(u"newdir")
+        d.addCallback(_got_subdir)
+        d.addCallback(lambda newdir:
+            self.failUnlessEqual(newdir._node.get_version(), MDMF_VERSION))
+        return d
+
+    def test_PUT_NEWDIRURL_mkdirs_sdmf(self):
+        d = self.PUT(self.public_url + "/foo/subdir/newdir?t=mkdir&format=sdmf", "")
+        d.addCallback(lambda ignored:
+            self.failUnlessNodeHasChild(self._foo_node, u"subdir"))
+        d.addCallback(lambda ignored:
+            self.failIfNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda ignored:
+            self._foo_node.get_child_at_path(u"subdir"))
+        def _got_subdir(subdir):
+            # XXX: What we want?
+            #self.failUnlessEqual(subdir._node.get_version(), MDMF_VERSION)
+            self.failUnlessNodeHasChild(subdir, u"newdir")
+            return subdir.get_child_at_path(u"newdir")
+        d.addCallback(_got_subdir)
+        d.addCallback(lambda newdir:
+            self.failUnlessEqual(newdir._node.get_version(), SDMF_VERSION))
+        return d
+
+    def test_PUT_NEWDIRURL_mkdirs_bad_format(self):
+        return self.shouldHTTPError("PUT_NEWDIRURL_mkdirs_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.PUT, self.public_url + \
+                                    "/foo/subdir/newdir?t=mkdir&format=foo",
+                                    "")
+
     def test_DELETE_DIRURL(self):
         d = self.DELETE(self.public_url + "/foo")
         d.addCallback(lambda res:
@@ -1366,21 +2159,21 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             assert isinstance(k, unicode)
         d = node.list()
         def _check(children):
-            self.failUnlessEqual(sorted(children.keys()), sorted(expected_keys))
+            self.failUnlessReallyEqual(sorted(children.keys()), sorted(expected_keys))
         d.addCallback(_check)
         return d
     def failUnlessNodeHasChild(self, node, name):
         assert isinstance(name, unicode)
         d = node.list()
         def _check(children):
-            self.failUnless(name in children)
+            self.failUnlessIn(name, children)
         d.addCallback(_check)
         return d
     def failIfNodeHasChild(self, node, name):
         assert isinstance(name, unicode)
         d = node.list()
         def _check(children):
-            self.failIf(name in children)
+            self.failIfIn(name, children)
         d.addCallback(_check)
         return d
 
@@ -1389,7 +2182,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         d.addCallback(lambda node: download_to_data(node))
         def _check(contents):
-            self.failUnlessEqual(contents, expected_contents)
+            self.failUnlessReallyEqual(contents, expected_contents)
         d.addCallback(_check)
         return d
 
@@ -1398,7 +2191,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         d.addCallback(lambda node: node.download_best_version())
         def _check(contents):
-            self.failUnlessEqual(contents, expected_contents)
+            self.failUnlessReallyEqual(contents, expected_contents)
         d.addCallback(_check)
         return d
 
@@ -1407,11 +2200,11 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         def _check(child):
             self.failUnless(child.is_unknown() or not child.is_readonly())
-            self.failUnlessEqual(child.get_uri(), expected_uri.strip())
-            self.failUnlessEqual(child.get_write_uri(), expected_uri.strip())
+            self.failUnlessReallyEqual(child.get_uri(), expected_uri.strip())
+            self.failUnlessReallyEqual(child.get_write_uri(), expected_uri.strip())
             expected_ro_uri = self._make_readonly(expected_uri)
             if expected_ro_uri:
-                self.failUnlessEqual(child.get_readonly_uri(), expected_ro_uri.strip())
+                self.failUnlessReallyEqual(child.get_readonly_uri(), expected_ro_uri.strip())
         d.addCallback(_check)
         return d
 
@@ -1420,9 +2213,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         def _check(child):
             self.failUnless(child.is_unknown() or child.is_readonly())
-            self.failUnlessEqual(child.get_write_uri(), None)
-            self.failUnlessEqual(child.get_uri(), expected_uri.strip())
-            self.failUnlessEqual(child.get_readonly_uri(), expected_uri.strip())
+            self.failUnlessReallyEqual(child.get_write_uri(), None)
+            self.failUnlessReallyEqual(child.get_uri(), expected_uri.strip())
+            self.failUnlessReallyEqual(child.get_readonly_uri(), expected_uri.strip())
         d.addCallback(_check)
         return d
 
@@ -1431,11 +2224,11 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         def _check(child):
             self.failUnless(child.is_unknown() or not child.is_readonly())
-            self.failUnlessEqual(child.get_uri(), got_uri.strip())
-            self.failUnlessEqual(child.get_write_uri(), got_uri.strip())
+            self.failUnlessReallyEqual(child.get_uri(), got_uri.strip())
+            self.failUnlessReallyEqual(child.get_write_uri(), got_uri.strip())
             expected_ro_uri = self._make_readonly(got_uri)
             if expected_ro_uri:
-                self.failUnlessEqual(child.get_readonly_uri(), expected_ro_uri.strip())
+                self.failUnlessReallyEqual(child.get_readonly_uri(), expected_ro_uri.strip())
         d.addCallback(_check)
         return d
 
@@ -1444,14 +2237,14 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = node.get_child_at_path(name)
         def _check(child):
             self.failUnless(child.is_unknown() or child.is_readonly())
-            self.failUnlessEqual(child.get_write_uri(), None)
-            self.failUnlessEqual(got_uri.strip(), child.get_uri())
-            self.failUnlessEqual(got_uri.strip(), child.get_readonly_uri())
+            self.failUnlessReallyEqual(child.get_write_uri(), None)
+            self.failUnlessReallyEqual(got_uri.strip(), child.get_uri())
+            self.failUnlessReallyEqual(got_uri.strip(), child.get_readonly_uri())
         d.addCallback(_check)
         return d
 
     def failUnlessCHKURIHasContents(self, got_uri, contents):
-        self.failUnless(FakeCHKFileNode.all_contents[got_uri] == contents)
+        self.failUnless(self.get_all_contents()[got_uri] == contents)
 
     def test_POST_upload(self):
         d = self.POST(self.public_url + "/foo", t="upload",
@@ -1474,9 +2267,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                                       self.NEWFILE_CONTENTS))
         target_url = self.public_url + "/foo/" + filename.encode("utf-8")
         d.addCallback(lambda res: self.GET(target_url))
-        d.addCallback(lambda contents: self.failUnlessEqual(contents,
-                                                            self.NEWFILE_CONTENTS,
-                                                            contents))
+        d.addCallback(lambda contents: self.failUnlessReallyEqual(contents,
+                                                                  self.NEWFILE_CONTENTS,
+                                                                  contents))
         return d
 
     def test_POST_upload_unicode_named(self):
@@ -1491,9 +2284,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                                       self.NEWFILE_CONTENTS))
         target_url = self.public_url + "/foo/" + filename.encode("utf-8")
         d.addCallback(lambda res: self.GET(target_url))
-        d.addCallback(lambda contents: self.failUnlessEqual(contents,
-                                                            self.NEWFILE_CONTENTS,
-                                                            contents))
+        d.addCallback(lambda contents: self.failUnlessReallyEqual(contents,
+                                                                  self.NEWFILE_CONTENTS,
+                                                                  contents))
         return d
 
     def test_POST_upload_no_link(self):
@@ -1502,8 +2295,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         def _check_upload_results(page):
             # this should be a page which describes the results of the upload
             # that just finished.
-            self.failUnless("Upload Results:" in page)
-            self.failUnless("URI:" in page)
+            self.failUnlessIn("Upload Results:", page)
+            self.failUnlessIn("URI:", page)
             uri_re = re.compile("URI: <tt><span>(.*)</span>")
             mo = uri_re.search(page)
             self.failUnless(mo, page)
@@ -1534,16 +2327,17 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
     def test_POST_upload_no_link_whendone_results(self):
         def check(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
             self.failUnless(target.startswith(self.webish_url), target)
             return client.getPage(target, method="GET")
+        # We encode "uri" as "%75ri" to exercise a case affected by ticket #1860.
         d = self.shouldRedirect2("test_POST_upload_no_link_whendone_results",
                                  check,
                                  self.POST, "/uri", t="upload",
-                                 when_done="/uri/%(uri)s",
+                                 when_done="/%75ri/%(uri)s",
                                  file=("new.txt", self.NEWFILE_CONTENTS))
         d.addCallback(lambda res:
-                      self.failUnlessEqual(res, self.NEWFILE_CONTENTS))
+                      self.failUnlessReallyEqual(res, self.NEWFILE_CONTENTS))
         return d
 
     def test_POST_upload_no_link_mutable(self):
@@ -1554,34 +2348,107 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             self.failUnless(filecap.startswith("URI:SSK:"), filecap)
             self.filecap = filecap
             u = uri.WriteableSSKFileURI.init_from_string(filecap)
-            self.failUnless(u.get_storage_index() in FakeMutableFileNode.all_contents)
+            self.failUnlessIn(u.get_storage_index(), self.get_all_contents())
             n = self.s.create_node_from_uri(filecap)
             return n.download_best_version()
         d.addCallback(_check)
         def _check2(data):
-            self.failUnlessEqual(data, self.NEWFILE_CONTENTS)
+            self.failUnlessReallyEqual(data, self.NEWFILE_CONTENTS)
             return self.GET("/uri/%s" % urllib.quote(self.filecap))
         d.addCallback(_check2)
         def _check3(data):
-            self.failUnlessEqual(data, self.NEWFILE_CONTENTS)
+            self.failUnlessReallyEqual(data, self.NEWFILE_CONTENTS)
             return self.GET("/file/%s" % urllib.quote(self.filecap))
         d.addCallback(_check3)
         def _check4(data):
-            self.failUnlessEqual(data, self.NEWFILE_CONTENTS)
+            self.failUnlessReallyEqual(data, self.NEWFILE_CONTENTS)
         d.addCallback(_check4)
         return d
 
     def test_POST_upload_no_link_mutable_toobig(self):
-        d = self.shouldFail2(error.Error,
-                             "test_POST_upload_no_link_mutable_toobig",
-                             "413 Request Entity Too Large",
-                             "SDMF is limited to one segment, and 10001 > 10000",
-                             self.POST,
-                             "/uri", t="upload", mutable="true",
-                             file=("new.txt",
-                                   "b" * (self.s.MUTABLE_SIZELIMIT+1)) )
+        # The SDMF size limit is no longer in place, so we should be
+        # able to upload mutable files that are as large as we want them
+        # to be.
+        d = self.POST("/uri", t="upload", mutable="true",
+                      file=("new.txt", "b" * (self.s.MUTABLE_SIZELIMIT + 1)))
+        return d
+
+
+    def test_POST_upload_format_unlinked(self):
+        def _check_upload_unlinked(ign, format, uri_prefix):
+            filename = format + ".txt"
+            d = self.POST("/uri?t=upload&format=" + format,
+                          file=(filename, self.NEWFILE_CONTENTS * 300000))
+            def _got_results(results):
+                if format.upper() in ("SDMF", "MDMF"):
+                    # webapi.rst says this returns a filecap
+                    filecap = results
+                else:
+                    # for immutable, it returns an "upload results page", and
+                    # the filecap is buried inside
+                    line = [l for l in results.split("\n") if "URI: " in l][0]
+                    mo = re.search(r'<span>([^<]+)</span>', line)
+                    filecap = mo.group(1)
+                self.failUnless(filecap.startswith(uri_prefix),
+                                (uri_prefix, filecap))
+                return self.GET("/uri/%s?t=json" % filecap)
+            d.addCallback(_got_results)
+            def _got_json(json):
+                data = simplejson.loads(json)
+                data = data[1]
+                self.failUnlessIn("format", data)
+                self.failUnlessEqual(data["format"], format.upper())
+            d.addCallback(_got_json)
+            return d
+        d = defer.succeed(None)
+        d.addCallback(_check_upload_unlinked, "chk", "URI:CHK")
+        d.addCallback(_check_upload_unlinked, "CHK", "URI:CHK")
+        d.addCallback(_check_upload_unlinked, "sdmf", "URI:SSK")
+        d.addCallback(_check_upload_unlinked, "mdmf", "URI:MDMF")
+        return d
+
+    def test_POST_upload_bad_format_unlinked(self):
+        return self.shouldHTTPError("POST_upload_bad_format_unlinked",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST,
+                                    "/uri?t=upload&format=foo",
+                                    file=("foo.txt", self.NEWFILE_CONTENTS * 300000))
+
+    def test_POST_upload_format(self):
+        def _check_upload(ign, format, uri_prefix, fn=None):
+            filename = format + ".txt"
+            d = self.POST(self.public_url +
+                          "/foo?t=upload&format=" + format,
+                          file=(filename, self.NEWFILE_CONTENTS * 300000))
+            def _got_filecap(filecap):
+                if fn is not None:
+                    filenameu = unicode(filename)
+                    self.failUnlessURIMatchesRWChild(filecap, fn, filenameu)
+                self.failUnless(filecap.startswith(uri_prefix))
+                return self.GET(self.public_url + "/foo/%s?t=json" % filename)
+            d.addCallback(_got_filecap)
+            def _got_json(json):
+                data = simplejson.loads(json)
+                data = data[1]
+                self.failUnlessIn("format", data)
+                self.failUnlessEqual(data["format"], format.upper())
+            d.addCallback(_got_json)
+            return d
+
+        d = defer.succeed(None)
+        d.addCallback(_check_upload, "chk", "URI:CHK")
+        d.addCallback(_check_upload, "sdmf", "URI:SSK", self._foo_node)
+        d.addCallback(_check_upload, "mdmf", "URI:MDMF")
+        d.addCallback(_check_upload, "MDMF", "URI:MDMF")
         return d
 
+    def test_POST_upload_bad_format(self):
+        return self.shouldHTTPError("POST_upload_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST, self.public_url + \
+                                    "/foo?t=upload&format=foo",
+                                    file=("foo.txt", self.NEWFILE_CONTENTS * 300000))
+
     def test_POST_upload_mutable(self):
         # this creates a mutable file
         d = self.POST(self.public_url + "/foo", t="upload", mutable="true",
@@ -1615,7 +2482,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             self.failUnless(IMutableFileNode.providedBy(newnode))
             self.failUnless(newnode.is_mutable())
             self.failIf(newnode.is_readonly())
-            self.failUnlessEqual(self._mutable_uri, newnode.get_uri())
+            self.failUnlessReallyEqual(self._mutable_uri, newnode.get_uri())
         d.addCallback(_got2)
 
         # upload a second time, using PUT instead of POST
@@ -1635,7 +2502,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                followRedirect=True))
         def _check_page(res):
             # TODO: assert more about the contents
-            self.failUnless("SSK" in res)
+            self.failUnlessIn("SSK", res)
             return res
         d.addCallback(_check_page)
 
@@ -1644,7 +2511,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             self.failUnless(IMutableFileNode.providedBy(newnode))
             self.failUnless(newnode.is_mutable())
             self.failIf(newnode.is_readonly())
-            self.failUnlessEqual(self._mutable_uri, newnode.get_uri())
+            self.failUnlessReallyEqual(self._mutable_uri, newnode.get_uri())
         d.addCallback(_got3)
 
         # look at the JSON form of the enclosing directory
@@ -1657,13 +2524,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             children = dict( [(unicode(name),value)
                               for (name,value)
                               in parsed[1]["children"].iteritems()] )
-            self.failUnless("new.txt" in children)
-            new_json = children["new.txt"]
+            self.failUnlessIn(u"new.txt", children)
+            new_json = children[u"new.txt"]
             self.failUnlessEqual(new_json[0], "filenode")
             self.failUnless(new_json[1]["mutable"])
-            self.failUnlessEqual(new_json[1]["rw_uri"], self._mutable_uri)
-            ro_uri = unicode(self._mutable_node.get_readonly().to_string())
-            self.failUnlessEqual(new_json[1]["ro_uri"], ro_uri)
+            self.failUnlessReallyEqual(to_str(new_json[1]["rw_uri"]), self._mutable_uri)
+            ro_uri = self._mutable_node.get_readonly().to_string()
+            self.failUnlessReallyEqual(to_str(new_json[1]["ro_uri"]), ro_uri)
         d.addCallback(_check_page_json)
 
         # and the JSON form of the file
@@ -1673,65 +2540,57 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             parsed = simplejson.loads(res)
             self.failUnlessEqual(parsed[0], "filenode")
             self.failUnless(parsed[1]["mutable"])
-            self.failUnlessEqual(parsed[1]["rw_uri"], self._mutable_uri)
-            ro_uri = unicode(self._mutable_node.get_readonly().to_string())
-            self.failUnlessEqual(parsed[1]["ro_uri"], ro_uri)
+            self.failUnlessReallyEqual(to_str(parsed[1]["rw_uri"]), self._mutable_uri)
+            ro_uri = self._mutable_node.get_readonly().to_string()
+            self.failUnlessReallyEqual(to_str(parsed[1]["ro_uri"]), ro_uri)
         d.addCallback(_check_file_json)
 
         # and look at t=uri and t=readonly-uri
         d.addCallback(lambda res:
                       self.GET(self.public_url + "/foo/new.txt?t=uri"))
-        d.addCallback(lambda res: self.failUnlessEqual(res, self._mutable_uri))
+        d.addCallback(lambda res: self.failUnlessReallyEqual(res, self._mutable_uri))
         d.addCallback(lambda res:
                       self.GET(self.public_url + "/foo/new.txt?t=readonly-uri"))
         def _check_ro_uri(res):
-            ro_uri = unicode(self._mutable_node.get_readonly().to_string())
-            self.failUnlessEqual(res, ro_uri)
+            ro_uri = self._mutable_node.get_readonly().to_string()
+            self.failUnlessReallyEqual(res, ro_uri)
         d.addCallback(_check_ro_uri)
 
         # make sure we can get to it from /uri/URI
         d.addCallback(lambda res:
                       self.GET("/uri/%s" % urllib.quote(self._mutable_uri)))
         d.addCallback(lambda res:
-                      self.failUnlessEqual(res, NEW2_CONTENTS))
+                      self.failUnlessReallyEqual(res, NEW2_CONTENTS))
 
         # and that HEAD computes the size correctly
         d.addCallback(lambda res:
                       self.HEAD(self.public_url + "/foo/new.txt",
                                 return_response=True))
         def _got_headers((res, status, headers)):
-            self.failUnlessEqual(res, "")
-            self.failUnlessEqual(headers["content-length"][0],
-                                 str(len(NEW2_CONTENTS)))
-            self.failUnlessEqual(headers["content-type"], ["text/plain"])
+            self.failUnlessReallyEqual(res, "")
+            self.failUnlessReallyEqual(headers["content-length"][0],
+                                       str(len(NEW2_CONTENTS)))
+            self.failUnlessReallyEqual(headers["content-type"], ["text/plain"])
         d.addCallback(_got_headers)
 
-        # make sure that size errors are displayed correctly for overwrite
-        d.addCallback(lambda res:
-                      self.shouldFail2(error.Error,
-                                       "test_POST_upload_mutable-toobig",
-                                       "413 Request Entity Too Large",
-                                       "SDMF is limited to one segment, and 10001 > 10000",
-                                       self.POST,
-                                       self.public_url + "/foo", t="upload",
-                                       mutable="true",
-                                       file=("new.txt",
-                                             "b" * (self.s.MUTABLE_SIZELIMIT+1)),
-                                       ))
-
+        # make sure that outdated size limits aren't enforced anymore.
+        d.addCallback(lambda ignored:
+            self.POST(self.public_url + "/foo", t="upload",
+                      mutable="true",
+                      file=("new.txt",
+                            "b" * (self.s.MUTABLE_SIZELIMIT+1))))
         d.addErrback(self.dump_error)
         return d
 
     def test_POST_upload_mutable_toobig(self):
-        d = self.shouldFail2(error.Error,
-                             "test_POST_upload_mutable_toobig",
-                             "413 Request Entity Too Large",
-                             "SDMF is limited to one segment, and 10001 > 10000",
-                             self.POST,
-                             self.public_url + "/foo",
-                             t="upload", mutable="true",
-                             file=("new.txt",
-                                   "b" * (self.s.MUTABLE_SIZELIMIT+1)) )
+        # SDMF had a size limti that was removed a while ago. MDMF has
+        # never had a size limit. Test to make sure that we do not
+        # encounter errors when trying to upload large mutable files,
+        # since there should be no coded prohibitions regarding large
+        # mutable files.
+        d = self.POST(self.public_url + "/foo",
+                      t="upload", mutable="true",
+                      file=("new.txt", "b" * (self.s.MUTABLE_SIZELIMIT + 1)))
         return d
 
     def dump_error(self, f):
@@ -1761,8 +2620,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.POST(self.public_url + "/foo?replace=false", t="upload",
                       file=("new.txt", self.NEWFILE_CONTENTS))
         d.addCallback(lambda res: self.GET(self.public_url + "/foo/new.txt"))
-        d.addCallback(lambda res: self.failUnlessEqual(res,
-                                                       self.NEWFILE_CONTENTS))
+        d.addCallback(lambda res: self.failUnlessReallyEqual(res,
+                                                             self.NEWFILE_CONTENTS))
         return d
 
     def test_POST_upload_no_replace_queryarg(self):
@@ -1819,8 +2678,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         # make sure that nothing was added
         d.addCallback(lambda res:
                       self.failUnlessNodeKeysAre(self._foo_node,
-                                                 [u"bar.txt", u"blockingfile",
-                                                  u"empty", u"n\u00fc.txt",
+                                                 [self._htmlname_unicode,
+                                                  u"bar.txt", u"baz.txt", u"blockingfile",
+                                                  u"empty", u"n\u00fc.txt", u"quux.txt",
                                                   u"sub"]))
         return d
 
@@ -1828,12 +2688,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         bar_url = self.public_url + "/foo/bar.txt"
         d = self.POST(bar_url, t="check")
         def _check(res):
-            self.failUnless("Healthy :" in res)
+            self.failUnlessIn("Healthy :", res)
         d.addCallback(_check)
         redir_url = "http://allmydata.org/TARGET"
         def _check2(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
-            self.failUnlessEqual(target, redir_url)
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(target, redir_url)
         d.addCallback(lambda res:
                       self.shouldRedirect2("test_POST_FILEURL_check",
                                            _check2,
@@ -1843,16 +2703,16 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda res:
                       self.POST(bar_url, t="check", return_to=redir_url))
         def _check3(res):
-            self.failUnless("Healthy :" in res)
-            self.failUnless("Return to file" in res)
-            self.failUnless(redir_url in res)
+            self.failUnlessIn("Healthy :", res)
+            self.failUnlessIn("Return to file", res)
+            self.failUnlessIn(redir_url, res)
         d.addCallback(_check3)
 
         d.addCallback(lambda res:
                       self.POST(bar_url, t="check", output="JSON"))
         def _check_json(res):
             data = simplejson.loads(res)
-            self.failUnless("storage-index" in data)
+            self.failUnlessIn("storage-index", data)
             self.failUnless(data["results"]["healthy"])
         d.addCallback(_check_json)
 
@@ -1862,12 +2722,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         bar_url = self.public_url + "/foo/bar.txt"
         d = self.POST(bar_url, t="check", repair="true")
         def _check(res):
-            self.failUnless("Healthy :" in res)
+            self.failUnlessIn("Healthy :", res)
         d.addCallback(_check)
         redir_url = "http://allmydata.org/TARGET"
         def _check2(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
-            self.failUnlessEqual(target, redir_url)
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(target, redir_url)
         d.addCallback(lambda res:
                       self.shouldRedirect2("test_POST_FILEURL_check_and_repair",
                                            _check2,
@@ -1877,9 +2737,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda res:
                       self.POST(bar_url, t="check", return_to=redir_url))
         def _check3(res):
-            self.failUnless("Healthy :" in res)
-            self.failUnless("Return to file" in res)
-            self.failUnless(redir_url in res)
+            self.failUnlessIn("Healthy :", res)
+            self.failUnlessIn("Return to file", res)
+            self.failUnlessIn(redir_url, res)
         d.addCallback(_check3)
         return d
 
@@ -1887,12 +2747,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         foo_url = self.public_url + "/foo/"
         d = self.POST(foo_url, t="check")
         def _check(res):
-            self.failUnless("Healthy :" in res, res)
+            self.failUnlessIn("Healthy :", res)
         d.addCallback(_check)
         redir_url = "http://allmydata.org/TARGET"
         def _check2(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
-            self.failUnlessEqual(target, redir_url)
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(target, redir_url)
         d.addCallback(lambda res:
                       self.shouldRedirect2("test_POST_DIRURL_check",
                                            _check2,
@@ -1902,16 +2762,16 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda res:
                       self.POST(foo_url, t="check", return_to=redir_url))
         def _check3(res):
-            self.failUnless("Healthy :" in res, res)
-            self.failUnless("Return to file/directory" in res)
-            self.failUnless(redir_url in res)
+            self.failUnlessIn("Healthy :", res)
+            self.failUnlessIn("Return to file/directory", res)
+            self.failUnlessIn(redir_url, res)
         d.addCallback(_check3)
 
         d.addCallback(lambda res:
                       self.POST(foo_url, t="check", output="JSON"))
         def _check_json(res):
             data = simplejson.loads(res)
-            self.failUnless("storage-index" in data)
+            self.failUnlessIn("storage-index", data)
             self.failUnless(data["results"]["healthy"])
         d.addCallback(_check_json)
 
@@ -1921,12 +2781,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         foo_url = self.public_url + "/foo/"
         d = self.POST(foo_url, t="check", repair="true")
         def _check(res):
-            self.failUnless("Healthy :" in res, res)
+            self.failUnlessIn("Healthy :", res)
         d.addCallback(_check)
         redir_url = "http://allmydata.org/TARGET"
         def _check2(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
-            self.failUnlessEqual(target, redir_url)
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(target, redir_url)
         d.addCallback(lambda res:
                       self.shouldRedirect2("test_POST_DIRURL_check_and_repair",
                                            _check2,
@@ -1936,12 +2796,36 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda res:
                       self.POST(foo_url, t="check", return_to=redir_url))
         def _check3(res):
-            self.failUnless("Healthy :" in res)
-            self.failUnless("Return to file/directory" in res)
-            self.failUnless(redir_url in res)
+            self.failUnlessIn("Healthy :", res)
+            self.failUnlessIn("Return to file/directory", res)
+            self.failUnlessIn(redir_url, res)
         d.addCallback(_check3)
         return d
 
+    def test_POST_FILEURL_mdmf_check(self):
+        quux_url = "/uri/%s" % urllib.quote(self._quux_txt_uri)
+        d = self.POST(quux_url, t="check")
+        def _check(res):
+            self.failUnlessIn("Healthy", res)
+        d.addCallback(_check)
+        quux_extension_url = "/uri/%s" % urllib.quote("%s:3:131073" % self._quux_txt_uri)
+        d.addCallback(lambda ignored:
+                      self.POST(quux_extension_url, t="check"))
+        d.addCallback(_check)
+        return d
+
+    def test_POST_FILEURL_mdmf_check_and_repair(self):
+        quux_url = "/uri/%s" % urllib.quote(self._quux_txt_uri)
+        d = self.POST(quux_url, t="check", repair="true")
+        def _check(res):
+            self.failUnlessIn("Healthy", res)
+        d.addCallback(_check)
+        quux_extension_url = "/uri/%s" % urllib.quote("%s:3:131073" % self._quux_txt_uri)
+        d.addCallback(lambda ignored:
+                      self.POST(quux_extension_url, t="check", repair="true"))
+        d.addCallback(_check)
+        return d
+
     def wait_for_operation(self, ignored, ophandle):
         url = "/operations/" + ophandle
         url += "?t=status&output=JSON"
@@ -1979,21 +2863,22 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
     def test_POST_DIRURL_deepcheck(self):
         def _check_redirect(statuscode, target):
-            self.failUnlessEqual(statuscode, str(http.FOUND))
+            self.failUnlessReallyEqual(statuscode, str(http.FOUND))
             self.failUnless(target.endswith("/operations/123"))
         d = self.shouldRedirect2("test_POST_DIRURL_deepcheck", _check_redirect,
                                  self.POST, self.public_url,
                                  t="start-deep-check", ophandle="123")
         d.addCallback(self.wait_for_operation, "123")
         def _check_json(data):
-            self.failUnlessEqual(data["finished"], True)
-            self.failUnlessEqual(data["count-objects-checked"], 8)
-            self.failUnlessEqual(data["count-objects-healthy"], 8)
+            self.failUnlessReallyEqual(data["finished"], True)
+            self.failUnlessReallyEqual(data["count-objects-checked"], 11)
+            self.failUnlessReallyEqual(data["count-objects-healthy"], 11)
         d.addCallback(_check_json)
         d.addCallback(self.get_operation_results, "123", "html")
         def _check_html(res):
-            self.failUnless("Objects Checked: <span>8</span>" in res)
-            self.failUnless("Objects Healthy: <span>8</span>" in res)
+            self.failUnlessIn("Objects Checked: <span>11</span>", res)
+            self.failUnlessIn("Objects Healthy: <span>11</span>", res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
         d.addCallback(_check_html)
 
         d.addCallback(lambda res:
@@ -2021,33 +2906,35 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                       ophandle="124", output="json", followRedirect=True)
         d.addCallback(self.wait_for_operation, "124")
         def _check_json(data):
-            self.failUnlessEqual(data["finished"], True)
-            self.failUnlessEqual(data["count-objects-checked"], 8)
-            self.failUnlessEqual(data["count-objects-healthy-pre-repair"], 8)
-            self.failUnlessEqual(data["count-objects-unhealthy-pre-repair"], 0)
-            self.failUnlessEqual(data["count-corrupt-shares-pre-repair"], 0)
-            self.failUnlessEqual(data["count-repairs-attempted"], 0)
-            self.failUnlessEqual(data["count-repairs-successful"], 0)
-            self.failUnlessEqual(data["count-repairs-unsuccessful"], 0)
-            self.failUnlessEqual(data["count-objects-healthy-post-repair"], 8)
-            self.failUnlessEqual(data["count-objects-unhealthy-post-repair"], 0)
-            self.failUnlessEqual(data["count-corrupt-shares-post-repair"], 0)
+            self.failUnlessReallyEqual(data["finished"], True)
+            self.failUnlessReallyEqual(data["count-objects-checked"], 11)
+            self.failUnlessReallyEqual(data["count-objects-healthy-pre-repair"], 11)
+            self.failUnlessReallyEqual(data["count-objects-unhealthy-pre-repair"], 0)
+            self.failUnlessReallyEqual(data["count-corrupt-shares-pre-repair"], 0)
+            self.failUnlessReallyEqual(data["count-repairs-attempted"], 0)
+            self.failUnlessReallyEqual(data["count-repairs-successful"], 0)
+            self.failUnlessReallyEqual(data["count-repairs-unsuccessful"], 0)
+            self.failUnlessReallyEqual(data["count-objects-healthy-post-repair"], 11)
+            self.failUnlessReallyEqual(data["count-objects-unhealthy-post-repair"], 0)
+            self.failUnlessReallyEqual(data["count-corrupt-shares-post-repair"], 0)
         d.addCallback(_check_json)
         d.addCallback(self.get_operation_results, "124", "html")
         def _check_html(res):
-            self.failUnless("Objects Checked: <span>8</span>" in res)
+            self.failUnlessIn("Objects Checked: <span>11</span>", res)
 
-            self.failUnless("Objects Healthy (before repair): <span>8</span>" in res)
-            self.failUnless("Objects Unhealthy (before repair): <span>0</span>" in res)
-            self.failUnless("Corrupt Shares (before repair): <span>0</span>" in res)
+            self.failUnlessIn("Objects Healthy (before repair): <span>11</span>", res)
+            self.failUnlessIn("Objects Unhealthy (before repair): <span>0</span>", res)
+            self.failUnlessIn("Corrupt Shares (before repair): <span>0</span>", res)
 
-            self.failUnless("Repairs Attempted: <span>0</span>" in res)
-            self.failUnless("Repairs Successful: <span>0</span>" in res)
-            self.failUnless("Repairs Unsuccessful: <span>0</span>" in res)
+            self.failUnlessIn("Repairs Attempted: <span>0</span>", res)
+            self.failUnlessIn("Repairs Successful: <span>0</span>", res)
+            self.failUnlessIn("Repairs Unsuccessful: <span>0</span>", res)
 
-            self.failUnless("Objects Healthy (after repair): <span>8</span>" in res)
-            self.failUnless("Objects Unhealthy (after repair): <span>0</span>" in res)
-            self.failUnless("Corrupt Shares (after repair): <span>0</span>" in res)
+            self.failUnlessIn("Objects Healthy (after repair): <span>11</span>", res)
+            self.failUnlessIn("Objects Unhealthy (after repair): <span>0</span>", res)
+            self.failUnlessIn("Corrupt Shares (after repair): <span>0</span>", res)
+
+            self.failUnlessIn(FAVICON_MARKUP, res)
         d.addCallback(_check_html)
         return d
 
@@ -2061,9 +2948,29 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_POST_mkdir(self): # return value?
         d = self.POST(self.public_url + "/foo", t="mkdir", name="newdir")
         d.addCallback(lambda res: self._foo_node.get(u"newdir"))
-        d.addCallback(self.failUnlessNodeKeysAre, [])
+        d.addCallback(self.failUnlessNodeKeysAre, [])
+        return d
+
+    def test_POST_mkdir_mdmf(self):
+        d = self.POST(self.public_url + "/foo?t=mkdir&name=newdir&format=mdmf")
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), MDMF_VERSION))
+        return d
+
+    def test_POST_mkdir_sdmf(self):
+        d = self.POST(self.public_url + "/foo?t=mkdir&name=newdir&format=sdmf")
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), SDMF_VERSION))
         return d
 
+    def test_POST_mkdir_bad_format(self):
+        return self.shouldHTTPError("POST_mkdir_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST, self.public_url +
+                                    "/foo?t=mkdir&name=newdir&format=foo")
+
     def test_POST_mkdir_initial_children(self):
         (newkids, caps) = self._create_initial_children()
         d = self.POST2(self.public_url +
@@ -2077,6 +2984,45 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessROChildURIIs, u"child-imm", caps['filecap1'])
         return d
 
+    def test_POST_mkdir_initial_children_mdmf(self):
+        (newkids, caps) = self._create_initial_children()
+        d = self.POST2(self.public_url +
+                       "/foo?t=mkdir-with-children&name=newdir&format=mdmf",
+                       simplejson.dumps(newkids))
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), MDMF_VERSION))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(self.failUnlessROChildURIIs, u"child-imm",
+                       caps['filecap1'])
+        return d
+
+    # XXX: Duplication.
+    def test_POST_mkdir_initial_children_sdmf(self):
+        (newkids, caps) = self._create_initial_children()
+        d = self.POST2(self.public_url +
+                       "/foo?t=mkdir-with-children&name=newdir&format=sdmf",
+                       simplejson.dumps(newkids))
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"newdir"))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(lambda node:
+            self.failUnlessEqual(node._node.get_version(), SDMF_VERSION))
+        d.addCallback(lambda res: self._foo_node.get(u"newdir"))
+        d.addCallback(self.failUnlessROChildURIIs, u"child-imm",
+                       caps['filecap1'])
+        return d
+
+    def test_POST_mkdir_initial_children_bad_format(self):
+        (newkids, caps) = self._create_initial_children()
+        return self.shouldHTTPError("POST_mkdir_initial_children_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST, self.public_url + \
+                                    "/foo?t=mkdir-with-children&name=newdir&format=foo",
+                                    simplejson.dumps(newkids))
+
     def test_POST_mkdir_immutable(self):
         (newkids, caps) = self._create_immutable_children()
         d = self.POST2(self.public_url +
@@ -2100,7 +3046,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
     def test_POST_mkdir_immutable_bad(self):
         (newkids, caps) = self._create_initial_children()
-        d = self.shouldFail2(error.Error, "test_POST_mkdir_immutable_bad",
+        d = self.shouldFail2(error.Error, "POST_mkdir_immutable_bad",
                              "400 Bad Request",
                              "needed to be immutable but was not",
                              self.POST2,
@@ -2133,6 +3079,29 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(_after_mkdir)
         return d
 
+    def test_POST_mkdir_no_parentdir_noredirect_mdmf(self):
+        d = self.POST("/uri?t=mkdir&format=mdmf")
+        def _after_mkdir(res):
+            u = uri.from_string(res)
+            # Check that this is an MDMF writecap
+            self.failUnlessIsInstance(u, uri.MDMFDirectoryURI)
+        d.addCallback(_after_mkdir)
+        return d
+
+    def test_POST_mkdir_no_parentdir_noredirect_sdmf(self):
+        d = self.POST("/uri?t=mkdir&format=sdmf")
+        def _after_mkdir(res):
+            u = uri.from_string(res)
+            self.failUnlessIsInstance(u, uri.DirectoryURI)
+        d.addCallback(_after_mkdir)
+        return d
+
+    def test_POST_mkdir_no_parentdir_noredirect_bad_format(self):
+        return self.shouldHTTPError("POST_mkdir_no_parentdir_noredirect_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.POST, self.public_url +
+                                    "/uri?t=mkdir&format=foo")
+
     def test_POST_mkdir_no_parentdir_noredirect2(self):
         # make sure form-based arguments (as on the welcome page) still work
         d = self.POST("/uri", t="mkdir")
@@ -2173,11 +3142,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         filecap2 = make_mutable_file_uri()
         node3 = self.s.create_node_from_uri(make_mutable_file_uri())
         filecap3 = node3.get_readonly_uri()
-        unknown_rwcap = "lafs://from_the_future"
-        unknown_rocap = "ro.lafs://readonly_from_the_future"
-        unknown_immcap = "imm.lafs://immutable_from_the_future"
         node4 = self.s.create_node_from_uri(make_mutable_file_uri())
         dircap = DirectoryNode(node4, None, None).get_uri()
+        mdmfcap = make_mutable_file_uri(mdmf=True)
         litdircap = "URI:DIR2-LIT:ge3dumj2mewdcotyfqydulbshj5x2lbm"
         emptydircap = "URI:DIR2-LIT:"
         newkids = {u"child-imm":        ["filenode", {"rw_uri": filecap1,
@@ -2194,6 +3161,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                                                       "ro_uri": self._make_readonly(dircap)}],
                    u"dirchild-lit":     ["dirnode",  {"ro_uri": litdircap}],
                    u"dirchild-empty":   ["dirnode",  {"ro_uri": emptydircap}],
+                   u"child-mutable-mdmf": ["filenode", {"rw_uri": mdmfcap,
+                                                        "ro_uri": self._make_readonly(mdmfcap)}],
                    }
         return newkids, {'filecap1': filecap1,
                          'filecap2': filecap2,
@@ -2203,15 +3172,16 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                          'unknown_immcap': unknown_immcap,
                          'dircap': dircap,
                          'litdircap': litdircap,
-                         'emptydircap': emptydircap}
+                         'emptydircap': emptydircap,
+                         'mdmfcap': mdmfcap}
 
     def _create_immutable_children(self):
         contents, n, filecap1 = self.makefile(12)
         md1 = {"metakey1": "metavalue1"}
-        tnode = create_chk_filenode("immutable directory contents\n"*10)
+        tnode = create_chk_filenode("immutable directory contents\n"*10,
+                                    self.get_all_contents())
         dnode = DirectoryNode(tnode, None, None)
         assert not dnode.is_mutable()
-        unknown_immcap = "imm.lafs://immutable_from_the_future"
         immdircap = dnode.get_uri()
         litdircap = "URI:DIR2-LIT:ge3dumj2mewdcotyfqydulbshj5x2lbm"
         emptydircap = "URI:DIR2-LIT:"
@@ -2264,7 +3234,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         # the regular /uri?t=mkdir operation is specified to ignore its body.
         # Only t=mkdir-with-children pays attention to it.
         (newkids, caps) = self._create_initial_children()
-        d = self.shouldHTTPError("POST t=mkdir unexpected children",
+        d = self.shouldHTTPError("POST_mkdir_no_parentdir_unexpected_children",
                                  400, "Bad Request",
                                  "t=mkdir does not accept children=, "
                                  "try t=mkdir-with-children instead",
@@ -2273,7 +3243,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_POST_noparent_bad(self):
-        d = self.shouldHTTPError("POST /uri?t=bogus", 400, "Bad Request",
+        d = self.shouldHTTPError("POST_noparent_bad",
+                                 400, "Bad Request",
                                  "/uri accepts only PUT, PUT?t=mkdir, "
                                  "POST?t=upload, and POST?t=mkdir",
                                  self.POST, "/uri?t=bogus")
@@ -2321,12 +3292,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.GET("/")
         def _after_get_welcome_page(res):
             MKDIR_BUTTON_RE = re.compile(
-                '<form action="([^"]*)" method="post".*?'
-                '<input type="hidden" name="t" value="([^"]*)" />'
-                '<input type="hidden" name="([^"]*)" value="([^"]*)" />'
-                '<input type="submit" value="Create a directory" />',
-                re.I)
-            mo = MKDIR_BUTTON_RE.search(res)
+                '<form(?: action="([^"]*)"| method="post"| enctype="multipart/form-data"){3}>.*'
+                '<input (?:type="hidden" |name="t" |value="([^"]*?)" ){3}/>[ ]*'
+                '<input (?:type="hidden" |name="([^"]*)" |value="([^"]*)" ){3}/>[ ]*'
+                '<input (type="submit" |class="btn" |value="Create a directory[^"]*" ){3}/>')
+            html = res.replace('\n', ' ')
+            mo = MKDIR_BUTTON_RE.search(html)
+            self.failUnless(mo, html)
             formaction = mo.group(1)
             formt = mo.group(2)
             formaname = mo.group(3)
@@ -2385,7 +3357,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_POST_bad_t(self):
-        d = self.shouldFail2(error.Error, "POST_bad_t", "400 Bad Request",
+        d = self.shouldFail2(error.Error, "POST_bad_t",
+                             "400 Bad Request",
                              "POST to a directory with bad t=BOGUS",
                              self.POST, self.public_url + "/foo", t="BOGUS")
         return d
@@ -2453,8 +3426,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_POST_link_uri_unknown_bad(self):
-        newuri = "lafs://from_the_future"
-        d = self.POST(self.public_url + "/foo", t="uri", name="future.txt", uri=newuri)
+        d = self.POST(self.public_url + "/foo", t="uri", name="future.txt", uri=unknown_rwcap)
         d.addBoth(self.shouldFail, error.Error,
                   "POST_link_uri_unknown_bad",
                   "400 Bad Request",
@@ -2462,14 +3434,12 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_POST_link_uri_unknown_ro_good(self):
-        newuri = "ro.lafs://readonly_from_the_future"
-        d = self.POST(self.public_url + "/foo", t="uri", name="future-ro.txt", uri=newuri)
+        d = self.POST(self.public_url + "/foo", t="uri", name="future-ro.txt", uri=unknown_rocap)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node, u"future-ro.txt")
         return d
 
     def test_POST_link_uri_unknown_imm_good(self):
-        newuri = "imm.lafs://immutable_from_the_future"
-        d = self.POST(self.public_url + "/foo", t="uri", name="future-imm.txt", uri=newuri)
+        d = self.POST(self.public_url + "/foo", t="uri", name="future-imm.txt", uri=unknown_immcap)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node, u"future-imm.txt")
         return d
 
@@ -2499,14 +3469,21 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsBarDotTxt)
         return d
 
-    def test_POST_delete(self):
-        d = self.POST(self.public_url + "/foo", t="delete", name="bar.txt")
+    def test_POST_delete(self, command_name='delete'):
+        d = self._foo_node.list()
+        def _check_before(children):
+            self.failUnlessIn(u"bar.txt", children)
+        d.addCallback(_check_before)
+        d.addCallback(lambda res: self.POST(self.public_url + "/foo", t=command_name, name="bar.txt"))
         d.addCallback(lambda res: self._foo_node.list())
-        def _check(children):
-            self.failIf(u"bar.txt" in children)
-        d.addCallback(_check)
+        def _check_after(children):
+            self.failIfIn(u"bar.txt", children)
+        d.addCallback(_check_after)
         return d
 
+    def test_POST_unlink(self):
+        return self.test_POST_delete(command_name='unlink')
+
     def test_POST_rename_file(self):
         d = self.POST(self.public_url + "/foo", t="rename",
                       from_name="bar.txt", to_name='wibble.txt')
@@ -2571,16 +3548,50 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsEmptyJSON)
         return d
 
+    def test_POST_rename_file_no_replace_same_link(self):
+        d = self.POST(self.public_url + "/foo", t="rename",
+                      replace="false", from_name="bar.txt", to_name="bar.txt")
+        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_rename_file_replace_only_files(self):
+        d = self.POST(self.public_url + "/foo", t="rename",
+                      replace="only-files", from_name="bar.txt",
+                      to_name="baz.txt")
+        d.addCallback(lambda res: self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/baz.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/baz.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_rename_file_replace_only_files_conflict(self):
+        d = self.shouldFail2(error.Error, "POST_relink_file_replace_only_files_conflict",
+                             "409 Conflict",
+                             "There was already a child by that name, and you asked me to not replace it.",
+                             self.POST, self.public_url + "/foo", t="relink",
+                             replace="only-files", from_name="bar.txt",
+                             to_name="empty")
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
     def failUnlessIsEmptyJSON(self, res):
         data = simplejson.loads(res)
         self.failUnlessEqual(data[0], "dirnode", data)
-        self.failUnlessEqual(len(data[1]["children"]), 0)
+        self.failUnlessReallyEqual(len(data[1]["children"]), 0)
 
-    def test_POST_rename_file_slash_fail(self):
+    def test_POST_rename_file_to_slash_fail(self):
         d = self.POST(self.public_url + "/foo", t="rename",
                       from_name="bar.txt", to_name='kirk/spock.txt')
         d.addBoth(self.shouldFail, error.Error,
-                  "test_POST_rename_file_slash_fail",
+                  "test_POST_rename_file_to_slash_fail",
                   "400 Bad Request",
                   "to_name= may not contain a slash",
                   )
@@ -2588,6 +3599,18 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                       self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
         return d
 
+    def test_POST_rename_file_from_slash_fail(self):
+        d = self.POST(self.public_url + "/foo", t="rename",
+                      from_name="sub/bar.txt", to_name='spock.txt')
+        d.addBoth(self.shouldFail, error.Error,
+                  "test_POST_rename_from_file_slash_fail",
+                  "400 Bad Request",
+                  "from_name= may not contain a slash",
+                  )
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        return d
+
     def test_POST_rename_dir(self):
         d = self.POST(self.public_url, t="rename",
                       from_name="foo", to_name='plunk')
@@ -2599,6 +3622,241 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsFooJSON)
         return d
 
+    def test_POST_relink_file(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._sub_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_new_name(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_name="wibble.txt", to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._sub_node, u"bar.txt"))
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._sub_node, u"wibble.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/wibble.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/wibble.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_replace(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_name="baz.txt", to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/baz.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/baz.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_no_replace(self):
+        d = self.shouldFail2(error.Error, "POST_relink_file_no_replace",
+                             "409 Conflict",
+                             "There was already a child by that name, and you asked me to not replace it",
+                             self.POST, self.public_url + "/foo", t="relink",
+                             replace="false", from_name="bar.txt",
+                             to_name="baz.txt", to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/baz.txt"))
+        d.addCallback(self.failUnlessIsSubBazDotTxt)
+        return d
+
+    def test_POST_relink_file_no_replace_explicitly_same_link(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      replace="false", from_name="bar.txt",
+                      to_name="bar.txt", to_dir=self.public_root.get_uri() + "/foo")
+        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_replace_only_files(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      replace="only-files", from_name="bar.txt",
+                      to_name="baz.txt", to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/baz.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/baz.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_replace_only_files_conflict(self):
+        d = self.shouldFail2(error.Error, "POST_relink_file_replace_only_files_conflict",
+                             "409 Conflict",
+                             "There was already a child by that name, and you asked me to not replace it.",
+                             self.POST, self.public_url + "/foo", t="relink",
+                             replace="only-files", from_name="bar.txt",
+                             to_name="sub", to_dir=self.public_root.get_uri() + "/foo")
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_to_slash_fail(self):
+        d = self.shouldFail2(error.Error, "test_POST_rename_file_slash_fail",
+                             "400 Bad Request",
+                             "to_name= may not contain a slash",
+                             self.POST, self.public_url + "/foo", t="relink",
+                             from_name="bar.txt",
+                             to_name="slash/fail.txt", to_dir=self.public_root.get_uri() + "/foo/sub")
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._sub_node, u"slash/fail.txt"))
+        d.addCallback(lambda ign:
+                      self.shouldFail2(error.Error,
+                                       "test_POST_rename_file_slash_fail2",
+                                       "400 Bad Request",
+                                       "from_name= may not contain a slash",
+                                       self.POST, self.public_url + "/foo",
+                                       t="relink",
+                                       from_name="nope/bar.txt",
+                                       to_name="fail.txt",
+                                       to_dir=self.public_root.get_uri() + "/foo/sub"))
+        return d
+
+    def test_POST_relink_file_explicitly_same_link(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_name="bar.txt", to_dir=self.public_root.get_uri() + "/foo")
+        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_implicitly_same_link(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt")
+        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_same_dir(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_name="baz.txt", to_dir=self.public_root.get_uri() + "/foo")
+        d.addCallback(lambda res: self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.failUnlessNodeHasChild(self._sub_node, u"baz.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/baz.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/baz.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_bad_replace(self):
+        d = self.shouldFail2(error.Error, "test_POST_relink_file_bad_replace",
+                             "400 Bad Request", "invalid replace= argument: 'boogabooga'",
+                             self.POST,
+                             self.public_url + "/foo", t="relink",
+                             replace="boogabooga", from_name="bar.txt",
+                             to_dir=self.public_root.get_uri() + "/foo/sub")
+        return d
+
+    def test_POST_relink_file_multi_level(self):
+        d = self.POST(self.public_url + "/foo/sub/level2?t=mkdir", "")
+        d.addCallback(lambda res: self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt", to_dir=self.public_root.get_uri() + "/foo/sub/level2"))
+        d.addCallback(lambda res: self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.failIfNodeHasChild(self._sub_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/level2/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/level2/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_to_uri(self):
+        d = self.POST(self.public_url + "/foo", t="relink", target_type="uri",
+                      from_name="bar.txt", to_dir=self._sub_uri)
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"bar.txt"))
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/sub/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_to_nonexistent_dir(self):
+        d = self.shouldFail2(error.Error, "POST_relink_file_to_nonexistent_dir",
+                            "404 Not Found", "No such child: nopechucktesta",
+                            self.POST, self.public_url + "/foo", t="relink",
+                            from_name="bar.txt",
+                            to_dir=self.public_root.get_uri() + "/nopechucktesta")
+        return d
+
+    def test_POST_relink_file_into_file(self):
+        d = self.shouldFail2(error.Error, "POST_relink_file_into_file",
+                             "400 Bad Request", "to_dir is not a directory",
+                             self.POST, self.public_url + "/foo", t="relink",
+                             from_name="bar.txt",
+                             to_dir=self.public_root.get_uri() + "/foo/baz.txt")
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/baz.txt"))
+        d.addCallback(self.failUnlessIsBazDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_file_to_bad_uri(self):
+        d =  self.shouldFail2(error.Error, "POST_relink_file_to_bad_uri",
+                              "400 Bad Request", "to_dir is not a directory",
+                              self.POST, self.public_url + "/foo", t="relink",
+                              from_name="bar.txt",
+                              to_dir="URI:DIR2:mn5jlyjnrjeuydyswlzyui72i:rmneifcj6k6sycjljjhj3f6majsq2zqffydnnul5hfa4j577arma")
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        d.addCallback(lambda res: self.GET(self.public_url + "/foo/bar.txt?t=json"))
+        d.addCallback(self.failUnlessIsBarJSON)
+        return d
+
+    def test_POST_relink_dir(self):
+        d = self.POST(self.public_url + "/foo", t="relink",
+                      from_name="bar.txt",
+                      to_dir=self.public_root.get_uri() + "/foo/empty")
+        d.addCallback(lambda res: self.POST(self.public_url + "/foo",
+                      t="relink", from_name="empty",
+                      to_dir=self.public_root.get_uri() + "/foo/sub"))
+        d.addCallback(lambda res:
+                      self.failIfNodeHasChild(self._foo_node, u"empty"))
+        d.addCallback(lambda res:
+                      self.failUnlessNodeHasChild(self._sub_node, u"empty"))
+        d.addCallback(lambda res:
+                      self._sub_node.get_child_at_path(u"empty"))
+        d.addCallback(lambda node:
+                      self.failUnlessNodeHasChild(node, u"bar.txt"))
+        d.addCallback(lambda res:
+                      self.GET(self.public_url + "/foo/sub/empty/bar.txt"))
+        d.addCallback(self.failUnlessIsBarDotTxt)
+        return d
+
     def shouldRedirect(self, res, target=None, statuscode=None, which=""):
         """ If target is not None then the redirection has to go to target.  If
         statuscode is not None then the redirection has to be accomplished with
@@ -2609,14 +3867,14 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                       " actual page: %s" % (which, to_where, res))
         res.trap(error.PageRedirect)
         if statuscode is not None:
-            self.failUnlessEqual(res.value.status, statuscode,
-                                 "%s: not a redirect" % which)
+            self.failUnlessReallyEqual(res.value.status, statuscode,
+                                       "%s: not a redirect" % which)
         if target is not None:
             # the PageRedirect does not seem to capture the uri= query arg
             # properly, so we can't check for it.
             realtarget = self.webish_url + target
-            self.failUnlessEqual(res.value.location, realtarget,
-                                 "%s: wrong target" % which)
+            self.failUnlessReallyEqual(res.value.location, realtarget,
+                                       "%s: wrong target" % which)
         return res.value.location
 
     def test_GET_URI_form(self):
@@ -2650,8 +3908,9 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.GET(self.public_url + "/foo?t=rename-form&name=bar.txt",
                      followRedirect=True)
         def _check(res):
-            self.failUnless('name="when_done" value="."' in res, res)
-            self.failUnless(re.search(r'name="from_name" value="bar\.txt"', res))
+            self.failUnless(re.search('<input (name="when_done" |value="." |type="hidden" ){3}/>', res), res)
+            self.failUnless(re.search(r'<input (readonly="true" |type="text" |name="from_name" |value="bar\.txt" ){4}/>', res), res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
         d.addCallback(_check)
         return d
 
@@ -2694,7 +3953,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             # replace /foo with a new (empty) directory
             d = self.PUT(self.public_url + "/foo?t=uri", new_uri)
             d.addCallback(lambda res:
-                          self.failUnlessEqual(res.strip(), new_uri))
+                          self.failUnlessReallyEqual(res.strip(), new_uri))
             d.addCallback(lambda res:
                           self.failUnlessRWChildURIIs(self.public_root,
                                                       u"foo",
@@ -2724,8 +3983,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
     def test_PUT_DIRURL_bad_t(self):
         d = self.shouldFail2(error.Error, "test_PUT_DIRURL_bad_t",
-                                 "400 Bad Request", "PUT to a directory",
-                                 self.PUT, self.public_url + "/foo?t=BOGUS", "")
+                             "400 Bad Request", "PUT to a directory",
+                             self.PUT, self.public_url + "/foo?t=BOGUS", "")
         d.addCallback(lambda res:
                       self.failUnlessRWChildURIIs(self.public_root,
                                                   u"foo",
@@ -2735,16 +3994,56 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_PUT_NEWFILEURL_uri(self):
         contents, n, new_uri = self.makefile(8)
         d = self.PUT(self.public_url + "/foo/new.txt?t=uri", new_uri)
-        d.addCallback(lambda res: self.failUnlessEqual(res.strip(), new_uri))
+        d.addCallback(lambda res: self.failUnlessReallyEqual(res.strip(), new_uri))
         d.addCallback(lambda res:
                       self.failUnlessChildContentsAre(self._foo_node, u"new.txt",
                                                       contents))
         return d
 
+    def test_PUT_NEWFILEURL_mdmf(self):
+        new_contents = self.NEWFILE_CONTENTS * 300000
+        d = self.PUT(self.public_url + \
+                     "/foo/mdmf.txt?format=mdmf",
+                     new_contents)
+        d.addCallback(lambda ignored:
+            self.GET(self.public_url + "/foo/mdmf.txt?t=json"))
+        def _got_json(json):
+            data = simplejson.loads(json)
+            data = data[1]
+            self.failUnlessIn("format", data)
+            self.failUnlessEqual(data["format"], "MDMF")
+            self.failUnless(data['rw_uri'].startswith("URI:MDMF"))
+            self.failUnless(data['ro_uri'].startswith("URI:MDMF"))
+        d.addCallback(_got_json)
+        return d
+
+    def test_PUT_NEWFILEURL_sdmf(self):
+        new_contents = self.NEWFILE_CONTENTS * 300000
+        d = self.PUT(self.public_url + \
+                     "/foo/sdmf.txt?format=sdmf",
+                     new_contents)
+        d.addCallback(lambda ignored:
+            self.GET(self.public_url + "/foo/sdmf.txt?t=json"))
+        def _got_json(json):
+            data = simplejson.loads(json)
+            data = data[1]
+            self.failUnlessIn("format", data)
+            self.failUnlessEqual(data["format"], "SDMF")
+        d.addCallback(_got_json)
+        return d
+
+    def test_PUT_NEWFILEURL_bad_format(self):
+        new_contents = self.NEWFILE_CONTENTS * 300000
+        return self.shouldHTTPError("PUT_NEWFILEURL_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.PUT, self.public_url + \
+                                    "/foo/foo.txt?format=foo",
+                                    new_contents)
+
     def test_PUT_NEWFILEURL_uri_replace(self):
         contents, n, new_uri = self.makefile(8)
         d = self.PUT(self.public_url + "/foo/bar.txt?t=uri", new_uri)
-        d.addCallback(lambda res: self.failUnlessEqual(res.strip(), new_uri))
+        d.addCallback(lambda res: self.failUnlessReallyEqual(res.strip(), new_uri))
         d.addCallback(lambda res:
                       self.failUnlessChildContentsAre(self._foo_node, u"bar.txt",
                                                       contents))
@@ -2753,15 +4052,15 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_PUT_NEWFILEURL_uri_no_replace(self):
         contents, n, new_uri = self.makefile(8)
         d = self.PUT(self.public_url + "/foo/bar.txt?t=uri&replace=false", new_uri)
-        d.addBoth(self.shouldFail, error.Error, "PUT_NEWFILEURL_uri_no_replace",
+        d.addBoth(self.shouldFail, error.Error,
+                  "PUT_NEWFILEURL_uri_no_replace",
                   "409 Conflict",
                   "There was already a child by that name, and you asked me "
                   "to not replace it")
         return d
 
     def test_PUT_NEWFILEURL_uri_unknown_bad(self):
-        new_uri = "lafs://from_the_future"
-        d = self.PUT(self.public_url + "/foo/put-future.txt?t=uri", new_uri)
+        d = self.PUT(self.public_url + "/foo/put-future.txt?t=uri", unknown_rwcap)
         d.addBoth(self.shouldFail, error.Error,
                   "POST_put_uri_unknown_bad",
                   "400 Bad Request",
@@ -2769,15 +4068,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         return d
 
     def test_PUT_NEWFILEURL_uri_unknown_ro_good(self):
-        new_uri = "ro.lafs://readonly_from_the_future"
-        d = self.PUT(self.public_url + "/foo/put-future-ro.txt?t=uri", new_uri)
+        d = self.PUT(self.public_url + "/foo/put-future-ro.txt?t=uri", unknown_rocap)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node,
                       u"put-future-ro.txt")
         return d
 
     def test_PUT_NEWFILEURL_uri_unknown_imm_good(self):
-        new_uri = "imm.lafs://immutable_from_the_future"
-        d = self.PUT(self.public_url + "/foo/put-future-imm.txt?t=uri", new_uri)
+        d = self.PUT(self.public_url + "/foo/put-future-imm.txt?t=uri", unknown_immcap)
         d.addCallback(self.failUnlessURIMatchesROChild, self._foo_node,
                       u"put-future-imm.txt")
         return d
@@ -2787,13 +4084,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.PUT("/uri", file_contents)
         def _check(uri):
             assert isinstance(uri, str), uri
-            self.failUnless(uri in FakeCHKFileNode.all_contents)
-            self.failUnlessEqual(FakeCHKFileNode.all_contents[uri],
-                                 file_contents)
+            self.failUnlessIn(uri, self.get_all_contents())
+            self.failUnlessReallyEqual(self.get_all_contents()[uri],
+                                       file_contents)
             return self.GET("/uri/%s" % uri)
         d.addCallback(_check)
         def _check2(res):
-            self.failUnlessEqual(res, file_contents)
+            self.failUnlessReallyEqual(res, file_contents)
         d.addCallback(_check2)
         return d
 
@@ -2802,13 +4099,13 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d = self.PUT("/uri?mutable=false", file_contents)
         def _check(uri):
             assert isinstance(uri, str), uri
-            self.failUnless(uri in FakeCHKFileNode.all_contents)
-            self.failUnlessEqual(FakeCHKFileNode.all_contents[uri],
-                                 file_contents)
+            self.failUnlessIn(uri, self.get_all_contents())
+            self.failUnlessReallyEqual(self.get_all_contents()[uri],
+                                       file_contents)
             return self.GET("/uri/%s" % uri)
         d.addCallback(_check)
         def _check2(res):
-            self.failUnlessEqual(res, file_contents)
+            self.failUnlessReallyEqual(res, file_contents)
         d.addCallback(_check2)
         return d
 
@@ -2828,16 +4125,16 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             self.failUnless(filecap.startswith("URI:SSK:"), filecap)
             self.filecap = filecap
             u = uri.WriteableSSKFileURI.init_from_string(filecap)
-            self.failUnless(u.get_storage_index() in FakeMutableFileNode.all_contents)
+            self.failUnlessIn(u.get_storage_index(), self.get_all_contents())
             n = self.s.create_node_from_uri(filecap)
             return n.download_best_version()
         d.addCallback(_check1)
         def _check2(data):
-            self.failUnlessEqual(data, file_contents)
+            self.failUnlessReallyEqual(data, file_contents)
             return self.GET("/uri/%s" % urllib.quote(self.filecap))
         d.addCallback(_check2)
         def _check3(res):
-            self.failUnlessEqual(res, file_contents)
+            self.failUnlessReallyEqual(res, file_contents)
         d.addCallback(_check3)
         return d
 
@@ -2853,6 +4150,29 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(self.failUnlessIsEmptyJSON)
         return d
 
+    def test_PUT_mkdir_mdmf(self):
+        d = self.PUT("/uri?t=mkdir&format=mdmf", "")
+        def _got(res):
+            u = uri.from_string(res)
+            # Check that this is an MDMF writecap
+            self.failUnlessIsInstance(u, uri.MDMFDirectoryURI)
+        d.addCallback(_got)
+        return d
+
+    def test_PUT_mkdir_sdmf(self):
+        d = self.PUT("/uri?t=mkdir&format=sdmf", "")
+        def _got(res):
+            u = uri.from_string(res)
+            self.failUnlessIsInstance(u, uri.DirectoryURI)
+        d.addCallback(_got)
+        return d
+
+    def test_PUT_mkdir_bad_format(self):
+        return self.shouldHTTPError("PUT_mkdir_bad_format",
+                                    400, "Bad Request", "Unknown format: foo",
+                                    self.PUT, "/uri?t=mkdir&format=foo",
+                                    "")
+
     def test_POST_check(self):
         d = self.POST(self.public_url + "/foo", t="check", name="bar.txt")
         def _done(res):
@@ -2865,9 +4185,78 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(_done)
         return d
 
+
+    def test_PUT_update_at_offset(self):
+        file_contents = "test file" * 100000 # about 900 KiB
+        d = self.PUT("/uri?mutable=true", file_contents)
+        def _then(filecap):
+            self.filecap = filecap
+            new_data = file_contents[:100]
+            new = "replaced and so on"
+            new_data += new
+            new_data += file_contents[len(new_data):]
+            assert len(new_data) == len(file_contents)
+            self.new_data = new_data
+        d.addCallback(_then)
+        d.addCallback(lambda ignored:
+            self.PUT("/uri/%s?replace=True&offset=100" % self.filecap,
+                     "replaced and so on"))
+        def _get_data(filecap):
+            n = self.s.create_node_from_uri(filecap)
+            return n.download_best_version()
+        d.addCallback(_get_data)
+        d.addCallback(lambda results:
+            self.failUnlessEqual(results, self.new_data))
+        # Now try appending things to the file
+        d.addCallback(lambda ignored:
+            self.PUT("/uri/%s?offset=%d" % (self.filecap, len(self.new_data)),
+                     "puppies" * 100))
+        d.addCallback(_get_data)
+        d.addCallback(lambda results:
+            self.failUnlessEqual(results, self.new_data + ("puppies" * 100)))
+        # and try replacing the beginning of the file
+        d.addCallback(lambda ignored:
+            self.PUT("/uri/%s?offset=0" % self.filecap, "begin"))
+        d.addCallback(_get_data)
+        d.addCallback(lambda results:
+            self.failUnlessEqual(results, "begin"+self.new_data[len("begin"):]+("puppies"*100)))
+        return d
+
+    def test_PUT_update_at_invalid_offset(self):
+        file_contents = "test file" * 100000 # about 900 KiB
+        d = self.PUT("/uri?mutable=true", file_contents)
+        def _then(filecap):
+            self.filecap = filecap
+        d.addCallback(_then)
+        # Negative offsets should cause an error.
+        d.addCallback(lambda ignored:
+            self.shouldHTTPError("PUT_update_at_invalid_offset",
+                                 400, "Bad Request",
+                                 "Invalid offset",
+                                 self.PUT,
+                                 "/uri/%s?offset=-1" % self.filecap,
+                                 "foo"))
+        return d
+
+    def test_PUT_update_at_offset_immutable(self):
+        file_contents = "Test file" * 100000
+        d = self.PUT("/uri", file_contents)
+        def _then(filecap):
+            self.filecap = filecap
+        d.addCallback(_then)
+        d.addCallback(lambda ignored:
+            self.shouldHTTPError("PUT_update_at_offset_immutable",
+                                 400, "Bad Request",
+                                 "immutable",
+                                 self.PUT,
+                                 "/uri/%s?offset=50" % self.filecap,
+                                 "foo"))
+        return d
+
+
     def test_bad_method(self):
         url = self.webish_url + self.public_url + "/foo/bar.txt"
-        d = self.shouldHTTPError("test_bad_method",
+        d = self.shouldHTTPError("bad_method",
                                  501, "Not Implemented",
                                  "I don't know how to treat a BOGUS request.",
                                  client.getPage, url, method="BOGUS")
@@ -2875,14 +4264,14 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
     def test_short_url(self):
         url = self.webish_url + "/uri"
-        d = self.shouldHTTPError("test_short_url", 501, "Not Implemented",
+        d = self.shouldHTTPError("short_url", 501, "Not Implemented",
                                  "I don't know how to treat a DELETE request.",
                                  client.getPage, url, method="DELETE")
         return d
 
     def test_ophandle_bad(self):
         url = self.webish_url + "/operations/bogus?t=status"
-        d = self.shouldHTTPError("test_ophandle_bad", 404, "404 Not Found",
+        d = self.shouldHTTPError("ophandle_bad", 404, "404 Not Found",
                                  "unknown/expired handle 'bogus'",
                                  client.getPage, url)
         return d
@@ -2906,7 +4295,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             return d
         d.addCallback(_check1)
         d.addCallback(lambda ignored:
-                      self.shouldHTTPError("test_ophandle_cancel",
+                      self.shouldHTTPError("ophandle_cancel",
                                            404, "404 Not Found",
                                            "unknown/expired handle '128'",
                                            self.GET,
@@ -2926,7 +4315,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda ign:
             self.clock.advance(2.0))
         d.addCallback(lambda ignored:
-                      self.shouldHTTPError("test_ophandle_retainfor",
+                      self.shouldHTTPError("ophandle_retainfor",
                                            404, "404 Not Found",
                                            "unknown/expired handle '129'",
                                            self.GET,
@@ -2941,7 +4330,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
                       self.GET("/operations/130?t=status&output=JSON&release-after-complete=true"))
         # the release-after-complete=true will cause the handle to be expired
         d.addCallback(lambda ignored:
-                      self.shouldHTTPError("test_ophandle_release_after_complete",
+                      self.shouldHTTPError("ophandle_release_after_complete",
                                            404, "404 Not Found",
                                            "unknown/expired handle '130'",
                                            self.GET,
@@ -2983,7 +4372,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda ign:
             self.clock.advance(96*60*60))
         d.addCallback(lambda ign:
-            self.shouldHTTPError("test_uncollected_ophandle_expired_after_100_hours",
+            self.shouldHTTPError("uncollected_ophandle_expired_after_100_hours",
                                  404, "404 Not Found",
                                  "unknown/expired handle '132'",
                                  self.GET,
@@ -2996,10 +4385,10 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
             d = self.POST(self.public_url +
                           "/foo/?t=start-manifest&ophandle=%d" % ophandle,
                           followRedirect=True)
-            # By following the initial redirect, we collect the ophandle 
+            # By following the initial redirect, we collect the ophandle
             # we've just created.
             return d
-        # Create a collected ophandle, then collect it after 23 hours 
+        # Create a collected ophandle, then collect it after 23 hours
         # and 59 seconds to make sure that it is still there.
         d = _make_collected_ophandle(133)
         d.addCallback(lambda ign:
@@ -3017,7 +4406,7 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
         d.addCallback(lambda ign:
             self.clock.advance(24*60*60))
         d.addCallback(lambda ign:
-            self.shouldHTTPError("test_collected_ophandle_expired_after_1000_minutes",
+            self.shouldHTTPError("collected_ophandle_expired_after_1_day",
                                  404, "404 Not Found",
                                  "unknown/expired handle '134'",
                                  self.GET,
@@ -3027,7 +4416,8 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
     def test_incident(self):
         d = self.POST("/report_incident", details="eek")
         def _done(res):
-            self.failUnless("Thank you for your report!" in res, res)
+            self.failIfIn("<html>", res)
+            self.failUnlessIn("An incident report has been saved", res)
         d.addCallback(_done)
         return d
 
@@ -3040,54 +4430,126 @@ class Web(WebMixin, WebErrorMixin, testutil.StallMixin, unittest.TestCase):
 
         d = self.GET("/static/subdir/hello.txt")
         def _check(res):
-            self.failUnlessEqual(res, "hello")
+            self.failUnlessReallyEqual(res, "hello")
+        d.addCallback(_check)
+        return d
+
+
+class IntroducerWeb(unittest.TestCase):
+    def setUp(self):
+        self.node = None
+
+    def tearDown(self):
+        d = defer.succeed(None)
+        if self.node:
+            d.addCallback(lambda ign: self.node.stopService())
+        d.addCallback(flushEventualQueue)
+        return d
+
+    def test_welcome(self):
+        basedir = "web.IntroducerWeb.test_welcome"
+        os.mkdir(basedir)
+        cfg = "\n".join(["[node]",
+                         "tub.location = 127.0.0.1:1",
+                         "web.port = tcp:0",
+                         ]) + "\n"
+        fileutil.write(os.path.join(basedir, "tahoe.cfg"), cfg)
+        self.node = IntroducerNode(basedir)
+        self.ws = self.node.getServiceNamed("webish")
+
+        d = fireEventually(None)
+        d.addCallback(lambda ign: self.node.startService())
+        d.addCallback(lambda ign: self.node.when_tub_ready())
+
+        d.addCallback(lambda ign: self.GET("/"))
+        def _check(res):
+            self.failUnlessIn('Welcome to the Tahoe-LAFS Introducer', res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
+            self.failUnlessIn('Page rendered at', res)
+            self.failUnlessIn('Tahoe-LAFS code imported from:', res)
         d.addCallback(_check)
         return d
 
+    def GET(self, urlpath, followRedirect=False, return_response=False,
+            **kwargs):
+        # if return_response=True, this fires with (data, statuscode,
+        # respheaders) instead of just data.
+        assert not isinstance(urlpath, unicode)
+        url = self.ws.getURL().rstrip('/') + urlpath
+        factory = HTTPClientGETFactory(url, method="GET",
+                                       followRedirect=followRedirect, **kwargs)
+        reactor.connectTCP("localhost", self.ws.getPortnum(), factory)
+        d = factory.deferred
+        def _got_data(data):
+            return (data, factory.status, factory.response_headers)
+        if return_response:
+            d.addCallback(_got_data)
+        return factory.deferred
+
+
+class Util(ShouldFailMixin, testutil.ReallyEqualMixin, unittest.TestCase):
+    def test_load_file(self):
+        # This will raise an exception unless a well-formed XML file is found under that name.
+        common.getxmlfile('directory.xhtml').load()
 
-class Util(unittest.TestCase, ShouldFailMixin):
     def test_parse_replace_arg(self):
-        self.failUnlessEqual(common.parse_replace_arg("true"), True)
-        self.failUnlessEqual(common.parse_replace_arg("false"), False)
-        self.failUnlessEqual(common.parse_replace_arg("only-files"),
-                             "only-files")
-        self.shouldFail(AssertionError, "test_parse_replace_arg", "",
-                        common.parse_replace_arg, "only_fles")
+        self.failUnlessReallyEqual(common.parse_replace_arg("true"), True)
+        self.failUnlessReallyEqual(common.parse_replace_arg("false"), False)
+        self.failUnlessReallyEqual(common.parse_replace_arg("only-files"),
+                                   "only-files")
+        self.failUnlessRaises(common.WebError, common.parse_replace_arg, "only_fles")
 
     def test_abbreviate_time(self):
-        self.failUnlessEqual(common.abbreviate_time(None), "")
-        self.failUnlessEqual(common.abbreviate_time(1.234), "1.23s")
-        self.failUnlessEqual(common.abbreviate_time(0.123), "123ms")
-        self.failUnlessEqual(common.abbreviate_time(0.00123), "1.2ms")
-        self.failUnlessEqual(common.abbreviate_time(0.000123), "123us")
+        self.failUnlessReallyEqual(common.abbreviate_time(None), "")
+        self.failUnlessReallyEqual(common.abbreviate_time(1.234), "1.23s")
+        self.failUnlessReallyEqual(common.abbreviate_time(0.123), "123ms")
+        self.failUnlessReallyEqual(common.abbreviate_time(0.00123), "1.2ms")
+        self.failUnlessReallyEqual(common.abbreviate_time(0.000123), "123us")
+        self.failUnlessReallyEqual(common.abbreviate_time(-123000), "-123000000000us")
+
+    def test_compute_rate(self):
+        self.failUnlessReallyEqual(common.compute_rate(None, None), None)
+        self.failUnlessReallyEqual(common.compute_rate(None, 1), None)
+        self.failUnlessReallyEqual(common.compute_rate(250000, None), None)
+        self.failUnlessReallyEqual(common.compute_rate(250000, 0), None)
+        self.failUnlessReallyEqual(common.compute_rate(250000, 10), 25000.0)
+        self.failUnlessReallyEqual(common.compute_rate(0, 10), 0.0)
+        self.shouldFail(AssertionError, "test_compute_rate", "",
+                        common.compute_rate, -100, 10)
+        self.shouldFail(AssertionError, "test_compute_rate", "",
+                        common.compute_rate, 100, -10)
+
+        # Sanity check
+        rate = common.compute_rate(10*1000*1000, 1)
+        self.failUnlessReallyEqual(common.abbreviate_rate(rate), "10.00MBps")
 
     def test_abbreviate_rate(self):
-        self.failUnlessEqual(common.abbreviate_rate(None), "")
-        self.failUnlessEqual(common.abbreviate_rate(1234000), "1.23MBps")
-        self.failUnlessEqual(common.abbreviate_rate(12340), "12.3kBps")
-        self.failUnlessEqual(common.abbreviate_rate(123), "123Bps")
+        self.failUnlessReallyEqual(common.abbreviate_rate(None), "")
+        self.failUnlessReallyEqual(common.abbreviate_rate(1234000), "1.23MBps")
+        self.failUnlessReallyEqual(common.abbreviate_rate(12340), "12.3kBps")
+        self.failUnlessReallyEqual(common.abbreviate_rate(123), "123Bps")
 
     def test_abbreviate_size(self):
-        self.failUnlessEqual(common.abbreviate_size(None), "")
-        self.failUnlessEqual(common.abbreviate_size(1.23*1000*1000*1000), "1.23GB")
-        self.failUnlessEqual(common.abbreviate_size(1.23*1000*1000), "1.23MB")
-        self.failUnlessEqual(common.abbreviate_size(1230), "1.2kB")
-        self.failUnlessEqual(common.abbreviate_size(123), "123B")
+        self.failUnlessReallyEqual(common.abbreviate_size(None), "")
+        self.failUnlessReallyEqual(common.abbreviate_size(1.23*1000*1000*1000), "1.23GB")
+        self.failUnlessReallyEqual(common.abbreviate_size(1.23*1000*1000), "1.23MB")
+        self.failUnlessReallyEqual(common.abbreviate_size(1230), "1.2kB")
+        self.failUnlessReallyEqual(common.abbreviate_size(123), "123B")
 
     def test_plural(self):
         def convert(s):
             return "%d second%s" % (s, status.plural(s))
-        self.failUnlessEqual(convert(0), "0 seconds")
-        self.failUnlessEqual(convert(1), "1 second")
-        self.failUnlessEqual(convert(2), "2 seconds")
+        self.failUnlessReallyEqual(convert(0), "0 seconds")
+        self.failUnlessReallyEqual(convert(1), "1 second")
+        self.failUnlessReallyEqual(convert(2), "2 seconds")
         def convert2(s):
             return "has share%s: %s" % (status.plural(s), ",".join(s))
-        self.failUnlessEqual(convert2([]), "has shares: ")
-        self.failUnlessEqual(convert2(["1"]), "has share: 1")
-        self.failUnlessEqual(convert2(["1","2"]), "has shares: 1,2")
+        self.failUnlessReallyEqual(convert2([]), "has shares: ")
+        self.failUnlessReallyEqual(convert2(["1"]), "has share: 1")
+        self.failUnlessReallyEqual(convert2(["1","2"]), "has shares: 1,2")
 
 
-class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
+class Grid(GridTestMixin, WebErrorMixin, ShouldFailMixin, testutil.ReallyEqualMixin, unittest.TestCase):
 
     def CHECK(self, ign, which, args, clientnum=0):
         fileurl = self.fileurls[which]
@@ -3102,7 +4564,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         DATA = "data" * 100
         d = c0.upload(upload.Data(DATA, convergence=""))
         def _stash_uri(ur, which):
-            self.uris[which] = ur.uri
+            self.uris[which] = ur.get_uri()
         d.addCallback(_stash_uri, "good")
         d.addCallback(lambda ign:
                       c0.upload(upload.Data(DATA+"1", convergence="")))
@@ -3113,7 +4575,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         def _stash_mutable_uri(n, which):
             self.uris[which] = n.get_uri()
             assert isinstance(self.uris[which], str)
-        d.addCallback(lambda ign: c0.create_mutable_file(DATA+"3"))
+        d.addCallback(lambda ign:
+            c0.create_mutable_file(publish.MutableData(DATA+"3")))
         d.addCallback(_stash_mutable_uri, "corrupt")
         d.addCallback(lambda ign:
                       c0.upload(upload.Data("literal", convergence="")))
@@ -3128,14 +4591,14 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         d.addCallback(_compute_fileurls)
 
         def _clobber_shares(ignored):
-            good_shares = self.find_shares(self.uris["good"])
-            self.failUnlessEqual(len(good_shares), 10)
-            sick_shares = self.find_shares(self.uris["sick"])
+            good_shares = self.find_uri_shares(self.uris["good"])
+            self.failUnlessReallyEqual(len(good_shares), 10)
+            sick_shares = self.find_uri_shares(self.uris["sick"])
             os.unlink(sick_shares[0][2])
-            dead_shares = self.find_shares(self.uris["dead"])
+            dead_shares = self.find_uri_shares(self.uris["dead"])
             for i in range(1, 10):
                 os.unlink(dead_shares[i][2])
-            c_shares = self.find_shares(self.uris["corrupt"])
+            c_shares = self.find_uri_shares(self.uris["corrupt"])
             cso = CorruptShareOptions()
             cso.stdout = StringIO()
             cso.parseOptions([c_shares[0][2]])
@@ -3144,36 +4607,35 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(self.CHECK, "good", "t=check")
         def _got_html_good(res):
-            self.failUnless("Healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
+            self.failUnlessIn("Healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
         d.addCallback(_got_html_good)
         d.addCallback(self.CHECK, "good", "t=check&return_to=somewhere")
         def _got_html_good_return_to(res):
-            self.failUnless("Healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
-            self.failUnless('<a href="somewhere">Return to file'
-                            in res, res)
+            self.failUnlessIn("Healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn('<a href="somewhere">Return to file', res)
         d.addCallback(_got_html_good_return_to)
         d.addCallback(self.CHECK, "good", "t=check&output=json")
         def _got_json_good(res):
             r = simplejson.loads(res)
             self.failUnlessEqual(r["summary"], "Healthy")
             self.failUnless(r["results"]["healthy"])
-            self.failIf(r["results"]["needs-rebalancing"])
+            self.failIfIn("needs-rebalancing", r["results"])
             self.failUnless(r["results"]["recoverable"])
         d.addCallback(_got_json_good)
 
         d.addCallback(self.CHECK, "small", "t=check")
         def _got_html_small(res):
-            self.failUnless("Literal files are always healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
+            self.failUnlessIn("Literal files are always healthy", res)
+            self.failIfIn("Not Healthy", res)
         d.addCallback(_got_html_small)
         d.addCallback(self.CHECK, "small", "t=check&return_to=somewhere")
         def _got_html_small_return_to(res):
-            self.failUnless("Literal files are always healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
-            self.failUnless('<a href="somewhere">Return to file'
-                            in res, res)
+            self.failUnlessIn("Literal files are always healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn('<a href="somewhere">Return to file', res)
         d.addCallback(_got_html_small_return_to)
         d.addCallback(self.CHECK, "small", "t=check&output=json")
         def _got_json_small(res):
@@ -3184,8 +4646,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(self.CHECK, "smalldir", "t=check")
         def _got_html_smalldir(res):
-            self.failUnless("Literal files are always healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
+            self.failUnlessIn("Literal files are always healthy", res)
+            self.failIfIn("Not Healthy", res)
         d.addCallback(_got_html_smalldir)
         d.addCallback(self.CHECK, "smalldir", "t=check&output=json")
         def _got_json_smalldir(res):
@@ -3196,7 +4658,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(self.CHECK, "sick", "t=check")
         def _got_html_sick(res):
-            self.failUnless("Not Healthy" in res, res)
+            self.failUnlessIn("Not Healthy", res)
         d.addCallback(_got_html_sick)
         d.addCallback(self.CHECK, "sick", "t=check&output=json")
         def _got_json_sick(res):
@@ -3204,13 +4666,13 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             self.failUnlessEqual(r["summary"],
                                  "Not Healthy: 9 shares (enc 3-of-10)")
             self.failIf(r["results"]["healthy"])
-            self.failIf(r["results"]["needs-rebalancing"])
             self.failUnless(r["results"]["recoverable"])
+            self.failIfIn("needs-rebalancing", r["results"])
         d.addCallback(_got_json_sick)
 
         d.addCallback(self.CHECK, "dead", "t=check")
         def _got_html_dead(res):
-            self.failUnless("Not Healthy" in res, res)
+            self.failUnlessIn("Not Healthy", res)
         d.addCallback(_got_html_dead)
         d.addCallback(self.CHECK, "dead", "t=check&output=json")
         def _got_json_dead(res):
@@ -3218,23 +4680,24 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             self.failUnlessEqual(r["summary"],
                                  "Not Healthy: 1 shares (enc 3-of-10)")
             self.failIf(r["results"]["healthy"])
-            self.failIf(r["results"]["needs-rebalancing"])
             self.failIf(r["results"]["recoverable"])
+            self.failIfIn("needs-rebalancing", r["results"])
         d.addCallback(_got_json_dead)
 
         d.addCallback(self.CHECK, "corrupt", "t=check&verify=true")
         def _got_html_corrupt(res):
-            self.failUnless("Not Healthy! : Unhealthy" in res, res)
+            self.failUnlessIn("Not Healthy! : Unhealthy", res)
         d.addCallback(_got_html_corrupt)
         d.addCallback(self.CHECK, "corrupt", "t=check&verify=true&output=json")
         def _got_json_corrupt(res):
             r = simplejson.loads(res)
-            self.failUnless("Unhealthy: 9 shares (enc 3-of-10)" in r["summary"],
-                            r["summary"])
+            self.failUnlessIn("Unhealthy: 9 shares (enc 3-of-10)", r["summary"])
             self.failIf(r["results"]["healthy"])
             self.failUnless(r["results"]["recoverable"])
-            self.failUnlessEqual(r["results"]["count-shares-good"], 9)
-            self.failUnlessEqual(r["results"]["count-corrupt-shares"], 1)
+            self.failIfIn("needs-rebalancing", r["results"])
+            self.failUnlessReallyEqual(r["results"]["count-happiness"], 9)
+            self.failUnlessReallyEqual(r["results"]["count-shares-good"], 9)
+            self.failUnlessReallyEqual(r["results"]["count-corrupt-shares"], 1)
         d.addCallback(_got_json_corrupt)
 
         d.addErrback(self.explain_web_error)
@@ -3248,7 +4711,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         DATA = "data" * 100
         d = c0.upload(upload.Data(DATA, convergence=""))
         def _stash_uri(ur, which):
-            self.uris[which] = ur.uri
+            self.uris[which] = ur.get_uri()
         d.addCallback(_stash_uri, "good")
         d.addCallback(lambda ign:
                       c0.upload(upload.Data(DATA+"1", convergence="")))
@@ -3259,7 +4722,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         def _stash_mutable_uri(n, which):
             self.uris[which] = n.get_uri()
             assert isinstance(self.uris[which], str)
-        d.addCallback(lambda ign: c0.create_mutable_file(DATA+"3"))
+        d.addCallback(lambda ign:
+            c0.create_mutable_file(publish.MutableData(DATA+"3")))
         d.addCallback(_stash_mutable_uri, "corrupt")
 
         def _compute_fileurls(ignored):
@@ -3269,14 +4733,14 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         d.addCallback(_compute_fileurls)
 
         def _clobber_shares(ignored):
-            good_shares = self.find_shares(self.uris["good"])
-            self.failUnlessEqual(len(good_shares), 10)
-            sick_shares = self.find_shares(self.uris["sick"])
+            good_shares = self.find_uri_shares(self.uris["good"])
+            self.failUnlessReallyEqual(len(good_shares), 10)
+            sick_shares = self.find_uri_shares(self.uris["sick"])
             os.unlink(sick_shares[0][2])
-            dead_shares = self.find_shares(self.uris["dead"])
+            dead_shares = self.find_uri_shares(self.uris["dead"])
             for i in range(1, 10):
                 os.unlink(dead_shares[i][2])
-            c_shares = self.find_shares(self.uris["corrupt"])
+            c_shares = self.find_uri_shares(self.uris["corrupt"])
             cso = CorruptShareOptions()
             cso.stdout = StringIO()
             cso.parseOptions([c_shares[0][2]])
@@ -3285,16 +4749,17 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(self.CHECK, "good", "t=check&repair=true")
         def _got_html_good(res):
-            self.failUnless("Healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
-            self.failUnless("No repair necessary" in res, res)
+            self.failUnlessIn("Healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn("No repair necessary", res)
+            self.failUnlessIn(FAVICON_MARKUP, res)
         d.addCallback(_got_html_good)
 
         d.addCallback(self.CHECK, "sick", "t=check&repair=true")
         def _got_html_sick(res):
-            self.failUnless("Healthy : healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
-            self.failUnless("Repair successful" in res, res)
+            self.failUnlessIn("Healthy : healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn("Repair successful", res)
         d.addCallback(_got_html_sick)
 
         # repair of a dead file will fail, of course, but it isn't yet
@@ -3304,16 +4769,16 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         #d.addCallback(self.CHECK, "dead", "t=check&repair=true")
         #def _got_html_dead(res):
         #    print res
-        #    self.failUnless("Healthy : healthy" in res, res)
-        #    self.failIf("Not Healthy" in res, res)
-        #    self.failUnless("No repair necessary" in res, res)
+        #    self.failUnlessIn("Healthy : healthy", res)
+        #    self.failIfIn("Not Healthy", res)
+        #    self.failUnlessIn("No repair necessary", res)
         #d.addCallback(_got_html_dead)
 
         d.addCallback(self.CHECK, "corrupt", "t=check&verify=true&repair=true")
         def _got_html_corrupt(res):
-            self.failUnless("Healthy : Healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
-            self.failUnless("Repair successful" in res, res)
+            self.failUnlessIn("Healthy : Healthy", res)
+            self.failIfIn("Not Healthy", res)
+            self.failUnlessIn("Repair successful", res)
         d.addCallback(_got_html_corrupt)
 
         d.addErrback(self.explain_web_error)
@@ -3327,7 +4792,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         DATA = "data" * 100
         d = c0.upload(upload.Data(DATA+"1", convergence=""))
         def _stash_uri(ur, which):
-            self.uris[which] = ur.uri
+            self.uris[which] = ur.get_uri()
         d.addCallback(_stash_uri, "sick")
 
         def _compute_fileurls(ignored):
@@ -3337,15 +4802,15 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         d.addCallback(_compute_fileurls)
 
         def _clobber_shares(ignored):
-            sick_shares = self.find_shares(self.uris["sick"])
+            sick_shares = self.find_uri_shares(self.uris["sick"])
             os.unlink(sick_shares[0][2])
         d.addCallback(_clobber_shares)
 
         d.addCallback(self.CHECK, "sick", "t=check&repair=true&output=json")
         def _got_json_sick(res):
             r = simplejson.loads(res)
-            self.failUnlessEqual(r["repair-attempted"], True)
-            self.failUnlessEqual(r["repair-successful"], True)
+            self.failUnlessReallyEqual(r["repair-attempted"], True)
+            self.failUnlessReallyEqual(r["repair-successful"], True)
             self.failUnlessEqual(r["pre-repair-results"]["summary"],
                                  "Not Healthy: 9 shares (enc 3-of-10)")
             self.failIf(r["pre-repair-results"]["results"]["healthy"])
@@ -3366,19 +4831,17 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         self.uris = {}
         self.fileurls = {}
 
-        future_write_uri = "x-tahoe-crazy://I_am_from_the_future."
-        future_read_uri = "x-tahoe-crazy-readonly://I_am_from_the_future."
         # the future cap format may contain slashes, which must be tolerated
-        expected_info_url = "uri/%s?t=info" % urllib.quote(future_write_uri,
+        expected_info_url = "uri/%s?t=info" % urllib.quote(unknown_rwcap,
                                                            safe="")
 
         if immutable:
             name = u"future-imm"
-            future_node = UnknownNode(None, future_read_uri, deep_immutable=True)
+            future_node = UnknownNode(None, unknown_immcap, deep_immutable=True)
             d = c0.create_immutable_dirnode({name: (future_node, {})})
         else:
             name = u"future"
-            future_node = UnknownNode(future_write_uri, future_read_uri)
+            future_node = UnknownNode(unknown_rwcap, unknown_rocap)
             d = c0.create_dirnode()
 
         def _stash_root_and_create_file(n):
@@ -3399,7 +4862,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             # find the More Info link for name, should be relative
             mo = re.search(r'<a href="([^"]+)">More Info</a>', res)
             info_url = mo.group(1)
-            self.failUnlessEqual(info_url, "%s?t=info" % (str(name),))
+            self.failUnlessReallyEqual(info_url, "%s?t=info" % (str(name),))
         if immutable:
             d.addCallback(_check_directory_html, "-IMM")
         else:
@@ -3412,24 +4875,27 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             f = data[1]["children"][name]
             self.failUnlessEqual(f[0], "unknown")
             if expect_rw_uri:
-                self.failUnlessEqual(f[1]["rw_uri"], future_write_uri)
+                self.failUnlessReallyEqual(to_str(f[1]["rw_uri"]), unknown_rwcap, data)
             else:
                 self.failIfIn("rw_uri", f[1])
             if immutable:
-                self.failUnlessEqual(f[1]["ro_uri"], "imm." + future_read_uri)
+                self.failUnlessReallyEqual(to_str(f[1]["ro_uri"]), unknown_immcap, data)
             else:
-                self.failUnlessEqual(f[1]["ro_uri"], "ro." + future_read_uri)
-            self.failUnless("metadata" in f[1])
+                self.failUnlessReallyEqual(to_str(f[1]["ro_uri"]), unknown_rocap, data)
+            self.failUnlessIn("metadata", f[1])
         d.addCallback(_check_directory_json, expect_rw_uri=not immutable)
 
         def _check_info(res, expect_rw_uri, expect_ro_uri):
             self.failUnlessIn("Object Type: <span>unknown</span>", res)
             if expect_rw_uri:
-                self.failUnlessIn(future_write_uri, res)
+                self.failUnlessIn(unknown_rwcap, res)
             if expect_ro_uri:
-                self.failUnlessIn(future_read_uri, res)
+                if immutable:
+                    self.failUnlessIn(unknown_immcap, res)
+                else:
+                    self.failUnlessIn(unknown_rocap, res)
             else:
-                self.failIfIn(future_read_uri, res)
+                self.failIfIn(unknown_rocap, res)
             self.failIfIn("Raw data as", res)
             self.failIfIn("Directory writecap", res)
             self.failIfIn("Checker Operations", res)
@@ -3448,28 +4914,28 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             data = simplejson.loads(res)
             self.failUnlessEqual(data[0], "unknown")
             if expect_rw_uri:
-                self.failUnlessEqual(data[1]["rw_uri"], future_write_uri)
+                self.failUnlessReallyEqual(to_str(data[1]["rw_uri"]), unknown_rwcap, data)
             else:
                 self.failIfIn("rw_uri", data[1])
 
             if immutable:
-                self.failUnlessEqual(data[1]["ro_uri"], "imm." + future_read_uri)
-                self.failUnlessEqual(data[1]["mutable"], False)
+                self.failUnlessReallyEqual(to_str(data[1]["ro_uri"]), unknown_immcap, data)
+                self.failUnlessReallyEqual(data[1]["mutable"], False)
             elif expect_rw_uri:
-                self.failUnlessEqual(data[1]["ro_uri"], "ro." + future_read_uri)
-                self.failUnlessEqual(data[1]["mutable"], True)
+                self.failUnlessReallyEqual(to_str(data[1]["ro_uri"]), unknown_rocap, data)
+                self.failUnlessReallyEqual(data[1]["mutable"], True)
             else:
-                self.failUnlessEqual(data[1]["ro_uri"], "ro." + future_read_uri)
-                self.failIf("mutable" in data[1], data[1])
+                self.failUnlessReallyEqual(to_str(data[1]["ro_uri"]), unknown_rocap, data)
+                self.failIfIn("mutable", data[1])
 
             # TODO: check metadata contents
-            self.failUnless("metadata" in data[1])
+            self.failUnlessIn("metadata", data[1])
 
         d.addCallback(lambda ign: self.GET("%s%s?t=json" % (self.rooturl, str(name))))
         d.addCallback(_check_json, expect_rw_uri=not immutable)
 
         # and make sure that a read-only version of the directory can be
-        # rendered too. This version will not have future_write_uri, whether
+        # rendered too. This version will not have unknown_rwcap, whether
         # or not future_node was immutable.
         d.addCallback(lambda ign: self.GET(self.rourl))
         if immutable:
@@ -3482,7 +4948,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(lambda ign: self.GET("%s%s?t=json" % (self.rourl, str(name))))
         d.addCallback(_check_json, expect_rw_uri=False)
-        
+
         # TODO: check that getting t=info from the Info link in the ro directory
         # works, and does not include the writecap URI.
         return d
@@ -3502,12 +4968,12 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         lonely_uri = "URI:LIT:n5xgk" # LIT for "one"
         mut_write_uri = "URI:SSK:vfvcbdfbszyrsaxchgevhmmlii:euw4iw7bbnkrrwpzuburbhppuxhc3gwxv26f6imekhz7zyw2ojnq"
         mut_read_uri = "URI:SSK-RO:e3mdrzfwhoq42hy5ubcz6rp3o4:ybyibhnp3vvwuq2vaw2ckjmesgkklfs6ghxleztqidihjyofgw7q"
-        
+
         # This method tests mainly dirnode, but we'd have to duplicate code in order to
         # test the dirnode and web layers separately.
-        
+
         # 'lonely' is a valid LIT child, 'ro' is a mutant child with an SSK-RO readcap,
-        # and 'write-in-ro' is a mutant child with an SSK writecap in the ro_uri field. 
+        # and 'write-in-ro' is a mutant child with an SSK writecap in the ro_uri field.
         # When the directory is read, the mutants should be silently disposed of, leaving
         # their lonely sibling.
         # We don't test the case of a retrieving a cap from the encrypted rw_uri field,
@@ -3534,7 +5000,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                 u"write-in-ro": (mutant_write_in_ro_child, {}),
                 }
         d = c.create_immutable_dirnode(kids)
-        
+
         def _created(dn):
             self.failUnless(isinstance(dn, dirnode.DirectoryNode))
             self.failIf(dn.is_mutable())
@@ -3542,7 +5008,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             # This checks that if we somehow ended up calling dn._decrypt_rwcapdata, it would fail.
             self.failIf(hasattr(dn._node, 'get_writekey'))
             rep = str(dn)
-            self.failUnless("RO-IMM" in rep)
+            self.failUnlessIn("RO-IMM", rep)
             cap = dn.get_cap()
             self.failUnlessIn("CHK", cap.to_string())
             self.cap = cap
@@ -3563,23 +5029,23 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                 entry = entries[0]
                 (name_utf8, ro_uri, rwcapdata, metadata_s), subpos = split_netstring(entry, 4)
                 name = name_utf8.decode("utf-8")
-                self.failUnless(rwcapdata == "")
-                self.failUnless(name in kids)
+                self.failUnlessEqual(rwcapdata, "")
+                self.failUnlessIn(name, kids)
                 (expected_child, ign) = kids[name]
-                self.failUnlessEqual(ro_uri, expected_child.get_readonly_uri())
+                self.failUnlessReallyEqual(ro_uri, expected_child.get_readonly_uri())
                 numkids += 1
 
-            self.failUnlessEqual(numkids, 3)
+            self.failUnlessReallyEqual(numkids, 3)
             return self.rootnode.list()
         d.addCallback(_check_data)
-        
+
         # Now when we use the real directory listing code, the mutants should be absent.
         def _check_kids(children):
-            self.failUnlessEqual(sorted(children.keys()), [u"lonely"])
+            self.failUnlessReallyEqual(sorted(children.keys()), [u"lonely"])
             lonely_node, lonely_metadata = children[u"lonely"]
 
-            self.failUnlessEqual(lonely_node.get_write_uri(), None)
-            self.failUnlessEqual(lonely_node.get_readonly_uri(), lonely_uri)
+            self.failUnlessReallyEqual(lonely_node.get_write_uri(), None)
+            self.failUnlessReallyEqual(lonely_node.get_readonly_uri(), lonely_uri)
         d.addCallback(_check_kids)
 
         d.addCallback(lambda ign: nm.create_from_cap(self.cap.to_string()))
@@ -3594,7 +5060,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                   r'\s+<td>',
                                   r'<a href="[^"]+%s[^"]+">lonely</a>' % (urllib.quote(lonely_uri),),
                                   r'</td>',
-                                  r'\s+<td>%d</td>' % len("one"),
+                                  r'\s+<td align="right">%d</td>' % len("one"),
                                   ])
             self.failUnless(re.search(get_lonely, res), res)
 
@@ -3610,11 +5076,11 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             data = simplejson.loads(res)
             self.failUnlessEqual(data[0], "dirnode")
             listed_children = data[1]["children"]
-            self.failUnlessEqual(sorted(listed_children.keys()), [u"lonely"])
+            self.failUnlessReallyEqual(sorted(listed_children.keys()), [u"lonely"])
             ll_type, ll_data = listed_children[u"lonely"]
             self.failUnlessEqual(ll_type, "filenode")
-            self.failIf("rw_uri" in ll_data)
-            self.failUnlessEqual(ll_data["ro_uri"], lonely_uri)
+            self.failIfIn("rw_uri", ll_data)
+            self.failUnlessReallyEqual(to_str(ll_data["ro_uri"]), lonely_uri)
         d.addCallback(_check_json)
         return d
 
@@ -3648,9 +5114,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         # this tests that deep-check and stream-manifest will ignore
         # UnknownNode instances. Hopefully this will also cover deep-stats.
-        future_write_uri = "x-tahoe-crazy://I_am_from_the_future."
-        future_read_uri = "x-tahoe-crazy-readonly://I_am_from_the_future."
-        future_node = UnknownNode(future_write_uri, future_read_uri)
+        future_node = UnknownNode(unknown_rwcap, unknown_rocap)
         d.addCallback(lambda ign: self.rootnode.set_node(u"future", future_node))
 
         def _clobber_shares(ignored):
@@ -3673,46 +5137,48 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                 print "response is:", res
                 print "undecodeable line was '%s'" % line
                 raise
-            self.failUnlessEqual(len(units), 5+1)
+            self.failUnlessReallyEqual(len(units), 5+1)
             # should be parent-first
             u0 = units[0]
             self.failUnlessEqual(u0["path"], [])
             self.failUnlessEqual(u0["type"], "directory")
-            self.failUnlessEqual(u0["cap"], self.rootnode.get_uri())
+            self.failUnlessReallyEqual(to_str(u0["cap"]), self.rootnode.get_uri())
             u0cr = u0["check-results"]
-            self.failUnlessEqual(u0cr["results"]["count-shares-good"], 10)
+            self.failUnlessReallyEqual(u0cr["results"]["count-happiness"], 10)
+            self.failUnlessReallyEqual(u0cr["results"]["count-shares-good"], 10)
 
             ugood = [u for u in units
                      if u["type"] == "file" and u["path"] == [u"good"]][0]
-            self.failUnlessEqual(ugood["cap"], self.uris["good"])
+            self.failUnlessReallyEqual(to_str(ugood["cap"]), self.uris["good"])
             ugoodcr = ugood["check-results"]
-            self.failUnlessEqual(ugoodcr["results"]["count-shares-good"], 10)
+            self.failUnlessReallyEqual(ugoodcr["results"]["count-happiness"], 10)
+            self.failUnlessReallyEqual(ugoodcr["results"]["count-shares-good"], 10)
 
             stats = units[-1]
             self.failUnlessEqual(stats["type"], "stats")
             s = stats["stats"]
-            self.failUnlessEqual(s["count-immutable-files"], 2)
-            self.failUnlessEqual(s["count-literal-files"], 1)
-            self.failUnlessEqual(s["count-directories"], 1)
-            self.failUnlessEqual(s["count-unknown"], 1)
+            self.failUnlessReallyEqual(s["count-immutable-files"], 2)
+            self.failUnlessReallyEqual(s["count-literal-files"], 1)
+            self.failUnlessReallyEqual(s["count-directories"], 1)
+            self.failUnlessReallyEqual(s["count-unknown"], 1)
         d.addCallback(_done)
 
         d.addCallback(self.CHECK, "root", "t=stream-manifest")
         def _check_manifest(res):
             self.failUnless(res.endswith("\n"))
             units = [simplejson.loads(t) for t in res[:-1].split("\n")]
-            self.failUnlessEqual(len(units), 5+1)
+            self.failUnlessReallyEqual(len(units), 5+1)
             self.failUnlessEqual(units[-1]["type"], "stats")
             first = units[0]
             self.failUnlessEqual(first["path"], [])
-            self.failUnlessEqual(first["cap"], self.rootnode.get_uri())
+            self.failUnlessEqual(to_str(first["cap"]), self.rootnode.get_uri())
             self.failUnlessEqual(first["type"], "directory")
             stats = units[-1]["stats"]
-            self.failUnlessEqual(stats["count-immutable-files"], 2)
-            self.failUnlessEqual(stats["count-literal-files"], 1)
-            self.failUnlessEqual(stats["count-mutable-files"], 0)
-            self.failUnlessEqual(stats["count-immutable-files"], 2)
-            self.failUnlessEqual(stats["count-unknown"], 1)
+            self.failUnlessReallyEqual(stats["count-immutable-files"], 2)
+            self.failUnlessReallyEqual(stats["count-literal-files"], 1)
+            self.failUnlessReallyEqual(stats["count-mutable-files"], 0)
+            self.failUnlessReallyEqual(stats["count-immutable-files"], 2)
+            self.failUnlessReallyEqual(stats["count-unknown"], 1)
         d.addCallback(_check_manifest)
 
         # now add root/subdir and root/subdir/grandchild, then make subdir
@@ -3758,7 +5224,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                               error_line)
             self.failUnless(len(error_msg) > 2, error_msg_s) # some traceback
             units = [simplejson.loads(line) for line in lines[:first_error]]
-            self.failUnlessEqual(len(units), 6) # includes subdir
+            self.failUnlessReallyEqual(len(units), 6) # includes subdir
             last_unit = units[-1]
             self.failUnlessEqual(last_unit["path"], ["subdir"])
         d.addCallback(_check_broken_manifest)
@@ -3779,13 +5245,14 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                               error_line)
             self.failUnless(len(error_msg) > 2, error_msg_s) # some traceback
             units = [simplejson.loads(line) for line in lines[:first_error]]
-            self.failUnlessEqual(len(units), 6) # includes subdir
+            self.failUnlessReallyEqual(len(units), 6) # includes subdir
             last_unit = units[-1]
             self.failUnlessEqual(last_unit["path"], ["subdir"])
             r = last_unit["check-results"]["results"]
-            self.failUnlessEqual(r["count-recoverable-versions"], 0)
-            self.failUnlessEqual(r["count-shares-good"], 1)
-            self.failUnlessEqual(r["recoverable"], False)
+            self.failUnlessReallyEqual(r["count-recoverable-versions"], 0)
+            self.failUnlessReallyEqual(r["count-happiness"], 1)
+            self.failUnlessReallyEqual(r["count-shares-good"], 1)
+            self.failUnlessReallyEqual(r["recoverable"], False)
         d.addCallback(_check_broken_deepcheck)
 
         d.addErrback(self.explain_web_error)
@@ -3828,15 +5295,15 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         #d.addCallback(_stash_uri, "corrupt")
 
         def _clobber_shares(ignored):
-            good_shares = self.find_shares(self.uris["good"])
-            self.failUnlessEqual(len(good_shares), 10)
-            sick_shares = self.find_shares(self.uris["sick"])
+            good_shares = self.find_uri_shares(self.uris["good"])
+            self.failUnlessReallyEqual(len(good_shares), 10)
+            sick_shares = self.find_uri_shares(self.uris["sick"])
             os.unlink(sick_shares[0][2])
-            #dead_shares = self.find_shares(self.uris["dead"])
+            #dead_shares = self.find_uri_shares(self.uris["dead"])
             #for i in range(1, 10):
             #    os.unlink(dead_shares[i][2])
 
-            #c_shares = self.find_shares(self.uris["corrupt"])
+            #c_shares = self.find_uri_shares(self.uris["corrupt"])
             #cso = CorruptShareOptions()
             #cso.stdout = StringIO()
             #cso.parseOptions([c_shares[0][2]])
@@ -3853,38 +5320,42 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             units = [simplejson.loads(line)
                      for line in res.splitlines()
                      if line]
-            self.failUnlessEqual(len(units), 4+1)
+            self.failUnlessReallyEqual(len(units), 4+1)
             # should be parent-first
             u0 = units[0]
             self.failUnlessEqual(u0["path"], [])
             self.failUnlessEqual(u0["type"], "directory")
-            self.failUnlessEqual(u0["cap"], self.rootnode.get_uri())
+            self.failUnlessReallyEqual(to_str(u0["cap"]), self.rootnode.get_uri())
             u0crr = u0["check-and-repair-results"]
-            self.failUnlessEqual(u0crr["repair-attempted"], False)
-            self.failUnlessEqual(u0crr["pre-repair-results"]["results"]["count-shares-good"], 10)
+            self.failUnlessReallyEqual(u0crr["repair-attempted"], False)
+            self.failUnlessReallyEqual(u0crr["pre-repair-results"]["results"]["count-happiness"], 10)
+            self.failUnlessReallyEqual(u0crr["pre-repair-results"]["results"]["count-shares-good"], 10)
 
             ugood = [u for u in units
                      if u["type"] == "file" and u["path"] == [u"good"]][0]
-            self.failUnlessEqual(ugood["cap"], self.uris["good"])
+            self.failUnlessEqual(to_str(ugood["cap"]), self.uris["good"])
             ugoodcrr = ugood["check-and-repair-results"]
-            self.failUnlessEqual(ugoodcrr["repair-attempted"], False)
-            self.failUnlessEqual(ugoodcrr["pre-repair-results"]["results"]["count-shares-good"], 10)
+            self.failUnlessReallyEqual(ugoodcrr["repair-attempted"], False)
+            self.failUnlessReallyEqual(ugoodcrr["pre-repair-results"]["results"]["count-happiness"], 10)
+            self.failUnlessReallyEqual(ugoodcrr["pre-repair-results"]["results"]["count-shares-good"], 10)
 
             usick = [u for u in units
                      if u["type"] == "file" and u["path"] == [u"sick"]][0]
-            self.failUnlessEqual(usick["cap"], self.uris["sick"])
+            self.failUnlessReallyEqual(to_str(usick["cap"]), self.uris["sick"])
             usickcrr = usick["check-and-repair-results"]
-            self.failUnlessEqual(usickcrr["repair-attempted"], True)
-            self.failUnlessEqual(usickcrr["repair-successful"], True)
-            self.failUnlessEqual(usickcrr["pre-repair-results"]["results"]["count-shares-good"], 9)
-            self.failUnlessEqual(usickcrr["post-repair-results"]["results"]["count-shares-good"], 10)
+            self.failUnlessReallyEqual(usickcrr["repair-attempted"], True)
+            self.failUnlessReallyEqual(usickcrr["repair-successful"], True)
+            self.failUnlessReallyEqual(usickcrr["pre-repair-results"]["results"]["count-happiness"], 9)
+            self.failUnlessReallyEqual(usickcrr["pre-repair-results"]["results"]["count-shares-good"], 9)
+            self.failUnlessReallyEqual(usickcrr["post-repair-results"]["results"]["count-happiness"], 10)
+            self.failUnlessReallyEqual(usickcrr["post-repair-results"]["results"]["count-shares-good"], 10)
 
             stats = units[-1]
             self.failUnlessEqual(stats["type"], "stats")
             s = stats["stats"]
-            self.failUnlessEqual(s["count-immutable-files"], 2)
-            self.failUnlessEqual(s["count-literal-files"], 1)
-            self.failUnlessEqual(s["count-directories"], 1)
+            self.failUnlessReallyEqual(s["count-immutable-files"], 2)
+            self.failUnlessReallyEqual(s["count-literal-files"], 1)
+            self.failUnlessReallyEqual(s["count-directories"], 1)
         d.addCallback(_done)
 
         d.addErrback(self.explain_web_error)
@@ -3892,12 +5363,12 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
     def _count_leases(self, ignored, which):
         u = self.uris[which]
-        shares = self.find_shares(u)
+        shares = self.find_uri_shares(u)
         lease_counts = []
         for shnum, serverid, fn in shares:
             sf = get_share_file(fn)
             num_leases = len(list(sf.get_leases()))
-        lease_counts.append( (fn, num_leases) )
+            lease_counts.append( (fn, num_leases) )
         return lease_counts
 
     def _assert_leasecount(self, lease_counts, expected):
@@ -3914,7 +5385,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         DATA = "data" * 100
         d = c0.upload(upload.Data(DATA, convergence=""))
         def _stash_uri(ur, which):
-            self.uris[which] = ur.uri
+            self.uris[which] = ur.get_uri()
         d.addCallback(_stash_uri, "one")
         d.addCallback(lambda ign:
                       c0.upload(upload.Data(DATA+"1", convergence="")))
@@ -3922,7 +5393,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         def _stash_mutable_uri(n, which):
             self.uris[which] = n.get_uri()
             assert isinstance(self.uris[which], str)
-        d.addCallback(lambda ign: c0.create_mutable_file(DATA+"2"))
+        d.addCallback(lambda ign:
+            c0.create_mutable_file(publish.MutableData(DATA+"2")))
         d.addCallback(_stash_mutable_uri, "mutable")
 
         def _compute_fileurls(ignored):
@@ -3940,8 +5412,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         d.addCallback(self.CHECK, "one", "t=check") # no add-lease
         def _got_html_good(res):
-            self.failUnless("Healthy" in res, res)
-            self.failIf("Not Healthy" in res, res)
+            self.failUnlessIn("Healthy", res)
+            self.failIfIn("Not Healthy", res)
         d.addCallback(_got_html_good)
 
         d.addCallback(self._count_leases, "one")
@@ -4021,7 +5493,8 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                                         convergence="")))
         d.addCallback(_stash_uri, "small")
 
-        d.addCallback(lambda ign: c0.create_mutable_file("mutable"))
+        d.addCallback(lambda ign:
+            c0.create_mutable_file(publish.MutableData("mutable")))
         d.addCallback(lambda fn: self.rootnode.set_node(u"mutable", fn))
         d.addCallback(_stash_uri, "mutable")
 
@@ -4031,7 +5504,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                      for line in res.splitlines()
                      if line]
             # root, one, small, mutable,   stats
-            self.failUnlessEqual(len(units), 4+1)
+            self.failUnlessReallyEqual(len(units), 4+1)
         d.addCallback(_done)
 
         d.addCallback(self._count_leases, "root")
@@ -4070,6 +5543,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         self.basedir = "web/Grid/exceptions"
         self.set_up_grid(num_clients=1, num_servers=2)
         c0 = self.g.clients[0]
+        c0.encoding_params['happy'] = 2
         self.fileurls = {}
         DATA = "data" * 100
         d = c0.create_dirnode()
@@ -4080,10 +5554,10 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
         d.addCallback(_stash_root)
         d.addCallback(lambda ign: c0.upload(upload.Data(DATA, convergence="")))
         def _stash_bad(ur):
-            self.fileurls["1share"] = "uri/" + urllib.quote(ur.uri)
-            self.delete_shares_numbered(ur.uri, range(1,10))
+            self.fileurls["1share"] = "uri/" + urllib.quote(ur.get_uri())
+            self.delete_shares_numbered(ur.get_uri(), range(1,10))
 
-            u = uri.from_string(ur.uri)
+            u = uri.from_string(ur.get_uri())
             u.key = testutil.flip_bit(u.key, 0)
             baduri = u.to_string()
             self.fileurls["0shares"] = "uri/" + urllib.quote(baduri)
@@ -4112,15 +5586,15 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                            410, "Gone", "NoSharesError",
                                            self.GET, self.fileurls["0shares"]))
         def _check_zero_shares(body):
-            self.failIf("<html>" in body, body)
+            self.failIfIn("<html>", body)
             body = " ".join(body.strip().split())
             exp = ("NoSharesError: no shares could be found. "
                    "Zero shares usually indicates a corrupt URI, or that "
                    "no servers were connected, but it might also indicate "
                    "severe corruption. You should perform a filecheck on "
                    "this object to learn more. The full error message is: "
-                   "Failed to get enough shareholders: have 0, need 3")
-            self.failUnlessEqual(exp, body)
+                   "no shares (need 3). Last failure: None")
+            self.failUnlessReallyEqual(exp, body)
         d.addCallback(_check_zero_shares)
 
 
@@ -4129,15 +5603,23 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                            410, "Gone", "NotEnoughSharesError",
                                            self.GET, self.fileurls["1share"]))
         def _check_one_share(body):
-            self.failIf("<html>" in body, body)
+            self.failIfIn("<html>", body)
             body = " ".join(body.strip().split())
-            exp = ("NotEnoughSharesError: This indicates that some "
-                   "servers were unavailable, or that shares have been "
-                   "lost to server departure, hard drive failure, or disk "
-                   "corruption. You should perform a filecheck on "
-                   "this object to learn more. The full error message is:"
-                   " Failed to get enough shareholders: have 1, need 3")
-            self.failUnlessEqual(exp, body)
+            msgbase = ("NotEnoughSharesError: This indicates that some "
+                       "servers were unavailable, or that shares have been "
+                       "lost to server departure, hard drive failure, or disk "
+                       "corruption. You should perform a filecheck on "
+                       "this object to learn more. The full error message is:"
+                       )
+            msg1 = msgbase + (" ran out of shares:"
+                              " complete=sh0"
+                              " pending="
+                              " overdue= unused= need 3. Last failure: None")
+            msg2 = msgbase + (" ran out of shares:"
+                              " complete="
+                              " pending=Share(sh0-on-xgru5)"
+                              " overdue= unused= need 3. Last failure: None")
+            self.failUnless(body == msg1 or body == msg2, body)
         d.addCallback(_check_one_share)
 
         d.addCallback(lambda ignored:
@@ -4145,12 +5627,12 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                            404, "Not Found", None,
                                            self.GET, self.fileurls["imaginary"]))
         def _missing_child(body):
-            self.failUnless("No such child: imaginary" in body, body)
+            self.failUnlessIn("No such child: imaginary", body)
         d.addCallback(_missing_child)
 
         d.addCallback(lambda ignored: self.GET(self.fileurls["dir-0share"]))
         def _check_0shares_dir_html(body):
-            self.failUnless("<html>" in body, body)
+            self.failUnlessIn(DIR_HTML_TAG, body)
             # we should see the regular page, but without the child table or
             # the dirops forms
             body = " ".join(body.strip().split())
@@ -4173,7 +5655,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
             # and some-shares like we did for immutable files (since there
             # are different sorts of advice to offer in each case). For now,
             # they present the same way.
-            self.failUnless("<html>" in body, body)
+            self.failUnlessIn(DIR_HTML_TAG, body)
             body = " ".join(body.strip().split())
             self.failUnlessIn('href="?t=info">More info on this directory',
                               body)
@@ -4194,7 +5676,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                            self.GET,
                                            self.fileurls["dir-0share-json"]))
         def _check_unrecoverable_file(body):
-            self.failIf("<html>" in body, body)
+            self.failIfIn("<html>", body)
             body = " ".join(body.strip().split())
             exp = ("UnrecoverableFileError: the directory (or mutable file) "
                    "could not be retrieved, because there were insufficient "
@@ -4203,7 +5685,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                    "was corrupt, or that shares have been lost due to server "
                    "departure, hard drive failure, or disk corruption. You "
                    "should perform a filecheck on this object to learn more.")
-            self.failUnlessEqual(exp, body)
+            self.failUnlessReallyEqual(exp, body)
         d.addCallback(_check_unrecoverable_file)
 
         d.addCallback(lambda ignored:
@@ -4232,18 +5714,18 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                       self.shouldHTTPError("GET errorboom_html",
                                            500, "Internal Server Error", None,
                                            self.GET, "ERRORBOOM",
-                                           headers={"accept": ["*/*"]}))
+                                           headers={"accept": "*/*"}))
         def _internal_error_html1(body):
-            self.failUnless("<html>" in body, "expected HTML, not '%s'" % body)
+            self.failUnlessIn("<html>", "expected HTML, not '%s'" % body)
         d.addCallback(_internal_error_html1)
 
         d.addCallback(lambda ignored:
                       self.shouldHTTPError("GET errorboom_text",
                                            500, "Internal Server Error", None,
                                            self.GET, "ERRORBOOM",
-                                           headers={"accept": ["text/plain"]}))
+                                           headers={"accept": "text/plain"}))
         def _internal_error_text2(body):
-            self.failIf("<html>" in body, body)
+            self.failIfIn("<html>", body)
             self.failUnless(body.startswith("Traceback "), body)
         d.addCallback(_internal_error_text2)
 
@@ -4252,9 +5734,9 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                       self.shouldHTTPError("GET errorboom_text",
                                            500, "Internal Server Error", None,
                                            self.GET, "ERRORBOOM",
-                                           headers={"accept": [CLI_accepts]}))
+                                           headers={"accept": CLI_accepts}))
         def _internal_error_text3(body):
-            self.failIf("<html>" in body, body)
+            self.failIfIn("<html>", body)
             self.failUnless(body.startswith("Traceback "), body)
         d.addCallback(_internal_error_text3)
 
@@ -4263,7 +5745,7 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
                                            500, "Internal Server Error", None,
                                            self.GET, "ERRORBOOM"))
         def _internal_error_html4(body):
-            self.failUnless("<html>" in body, "expected HTML, not '%s'" % body)
+            self.failUnlessIn("<html>", body)
         d.addCallback(_internal_error_html4)
 
         def _flush_errors(res):
@@ -4274,6 +5756,146 @@ class Grid(GridTestMixin, WebErrorMixin, unittest.TestCase, ShouldFailMixin):
 
         return d
 
+    def test_blacklist(self):
+        # download from a blacklisted URI, get an error
+        self.basedir = "web/Grid/blacklist"
+        self.set_up_grid()
+        c0 = self.g.clients[0]
+        c0_basedir = c0.basedir
+        fn = os.path.join(c0_basedir, "access.blacklist")
+        self.uris = {}
+        DATA = "off-limits " * 50
+
+        d = c0.upload(upload.Data(DATA, convergence=""))
+        def _stash_uri_and_create_dir(ur):
+            self.uri = ur.get_uri()
+            self.url = "uri/"+self.uri
+            u = uri.from_string_filenode(self.uri)
+            self.si = u.get_storage_index()
+            childnode = c0.create_node_from_uri(self.uri, None)
+            return c0.create_dirnode({u"blacklisted.txt": (childnode,{}) })
+        d.addCallback(_stash_uri_and_create_dir)
+        def _stash_dir(node):
+            self.dir_node = node
+            self.dir_uri = node.get_uri()
+            self.dir_url = "uri/"+self.dir_uri
+        d.addCallback(_stash_dir)
+        d.addCallback(lambda ign: self.GET(self.dir_url, followRedirect=True))
+        def _check_dir_html(body):
+            self.failUnlessIn(DIR_HTML_TAG, body)
+            self.failUnlessIn("blacklisted.txt</a>", body)
+        d.addCallback(_check_dir_html)
+        d.addCallback(lambda ign: self.GET(self.url))
+        d.addCallback(lambda body: self.failUnlessEqual(DATA, body))
+
+        def _blacklist(ign):
+            f = open(fn, "w")
+            f.write(" # this is a comment\n")
+            f.write(" \n")
+            f.write("\n") # also exercise blank lines
+            f.write("%s %s\n" % (base32.b2a(self.si), "off-limits to you"))
+            f.close()
+            # clients should be checking the blacklist each time, so we don't
+            # need to restart the client
+        d.addCallback(_blacklist)
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_uri",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: off-limits",
+                                                       self.GET, self.url))
+
+        # We should still be able to list the parent directory, in HTML...
+        d.addCallback(lambda ign: self.GET(self.dir_url, followRedirect=True))
+        def _check_dir_html2(body):
+            self.failUnlessIn(DIR_HTML_TAG, body)
+            self.failUnlessIn("blacklisted.txt</strike>", body)
+        d.addCallback(_check_dir_html2)
+
+        # ... and in JSON (used by CLI).
+        d.addCallback(lambda ign: self.GET(self.dir_url+"?t=json", followRedirect=True))
+        def _check_dir_json(res):
+            data = simplejson.loads(res)
+            self.failUnless(isinstance(data, list), data)
+            self.failUnlessEqual(data[0], "dirnode")
+            self.failUnless(isinstance(data[1], dict), data)
+            self.failUnlessIn("children", data[1])
+            self.failUnlessIn("blacklisted.txt", data[1]["children"])
+            childdata = data[1]["children"]["blacklisted.txt"]
+            self.failUnless(isinstance(childdata, list), data)
+            self.failUnlessEqual(childdata[0], "filenode")
+            self.failUnless(isinstance(childdata[1], dict), data)
+        d.addCallback(_check_dir_json)
+
+        def _unblacklist(ign):
+            open(fn, "w").close()
+            # the Blacklist object watches mtime to tell when the file has
+            # changed, but on windows this test will run faster than the
+            # filesystem's mtime resolution. So we edit Blacklist.last_mtime
+            # to force a reload.
+            self.g.clients[0].blacklist.last_mtime -= 2.0
+        d.addCallback(_unblacklist)
+
+        # now a read should work
+        d.addCallback(lambda ign: self.GET(self.url))
+        d.addCallback(lambda body: self.failUnlessEqual(DATA, body))
+
+        # read again to exercise the blacklist-is-unchanged logic
+        d.addCallback(lambda ign: self.GET(self.url))
+        d.addCallback(lambda body: self.failUnlessEqual(DATA, body))
+
+        # now add a blacklisted directory, and make sure files under it are
+        # refused too
+        def _add_dir(ign):
+            childnode = c0.create_node_from_uri(self.uri, None)
+            return c0.create_dirnode({u"child": (childnode,{}) })
+        d.addCallback(_add_dir)
+        def _get_dircap(dn):
+            self.dir_si_b32 = base32.b2a(dn.get_storage_index())
+            self.dir_url_base = "uri/"+dn.get_write_uri()
+            self.dir_url_json1 = "uri/"+dn.get_write_uri()+"?t=json"
+            self.dir_url_json2 = "uri/"+dn.get_write_uri()+"/?t=json"
+            self.dir_url_json_ro = "uri/"+dn.get_readonly_uri()+"/?t=json"
+            self.child_url = "uri/"+dn.get_readonly_uri()+"/child"
+        d.addCallback(_get_dircap)
+        d.addCallback(lambda ign: self.GET(self.dir_url_base, followRedirect=True))
+        d.addCallback(lambda body: self.failUnlessIn(DIR_HTML_TAG, body))
+        d.addCallback(lambda ign: self.GET(self.dir_url_json1))
+        d.addCallback(lambda res: simplejson.loads(res))  # just check it decodes
+        d.addCallback(lambda ign: self.GET(self.dir_url_json2))
+        d.addCallback(lambda res: simplejson.loads(res))  # just check it decodes
+        d.addCallback(lambda ign: self.GET(self.dir_url_json_ro))
+        d.addCallback(lambda res: simplejson.loads(res))  # just check it decodes
+        d.addCallback(lambda ign: self.GET(self.child_url))
+        d.addCallback(lambda body: self.failUnlessEqual(DATA, body))
+
+        def _block_dir(ign):
+            f = open(fn, "w")
+            f.write("%s %s\n" % (self.dir_si_b32, "dir-off-limits to you"))
+            f.close()
+            self.g.clients[0].blacklist.last_mtime -= 2.0
+        d.addCallback(_block_dir)
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_dir base",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: dir-off-limits",
+                                                       self.GET, self.dir_url_base))
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_dir json1",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: dir-off-limits",
+                                                       self.GET, self.dir_url_json1))
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_dir json2",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: dir-off-limits",
+                                                       self.GET, self.dir_url_json2))
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_dir json_ro",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: dir-off-limits",
+                                                       self.GET, self.dir_url_json_ro))
+        d.addCallback(lambda ign: self.shouldHTTPError("get_from_blacklisted_dir child",
+                                                       403, "Forbidden",
+                                                       "Access Prohibited: dir-off-limits",
+                                                       self.GET, self.child_url))
+        return d
+
+
 class CompletelyUnhandledError(Exception):
     pass
 class ErrorBoom(rend.Page):