From: meejah Date: Wed, 7 Oct 2015 23:03:28 +0000 (-0600) Subject: Teach unit-tests to time-warp X-Git-Url: https://git.rkrishnan.org/%5B/frontends/%22news.html/-?a=commitdiff_plain;h=93015086b073dd0154dbd238080cbd45c1f25d12;p=tahoe-lafs%2Ftahoe-lafs.git Teach unit-tests to time-warp 1. Split alice/bob clocks to avoid races conditions in the tests 2. Wrap ._notify so we can advance the clock after inotify calls in the RealTest (since it takes >0ms to do the "real" notifies) --- diff --git a/src/allmydata/test/test_cli_magic_folder.py b/src/allmydata/test/test_cli_magic_folder.py index 1ba831ac..01fa6c2c 100644 --- a/src/allmydata/test/test_cli_magic_folder.py +++ b/src/allmydata/test/test_cli_magic_folder.py @@ -105,11 +105,22 @@ class MagicFolderCLITestMixin(CLITestMixin, GridTestMixin): dbfile = abspath_expanduser_unicode(u"magicfolderdb.sqlite", base=self.get_clientdir(i=client_num)) magicfolder = MagicFolder(self.get_client(client_num), upload_dircap, collective_dircap, local_magic_dir, dbfile, pending_delay=0.2, clock=clock) + magicfolder.downloader._turn_delay = 0 + + orig = magicfolder.uploader._append_to_deque + # the _append_to_deque method queues a _turn_deque, so we + # immediately trigger it by wrapping _append_to_deque + def wrap(*args, **kw): + x = orig(*args, **kw) + clock.advance(0) # _turn_delay is always 0 for the tests + return x + magicfolder.uploader._append_to_deque = wrap + magicfolder.setServiceParent(self.get_client(client_num)) magicfolder.ready() return magicfolder - def setup_alice_and_bob(self, clock=reactor): + def setup_alice_and_bob(self, alice_clock=reactor, bob_clock=reactor): self.set_up_grid(num_clients=2) alice_magic_dir = abspath_expanduser_unicode(u"Alice-magic", base=self.basedir) @@ -131,7 +142,7 @@ class MagicFolderCLITestMixin(CLITestMixin, GridTestMixin): d.addCallback(lambda x: self.check_joined_config(0, self.alice_upload_dircap)) d.addCallback(lambda x: self.check_config(0, alice_magic_dir)) def get_Alice_magicfolder(result): - self.alice_magicfolder = self.init_magicfolder(0, self.alice_upload_dircap, self.alice_collective_dircap, alice_magic_dir, clock) + self.alice_magicfolder = self.init_magicfolder(0, self.alice_upload_dircap, self.alice_collective_dircap, alice_magic_dir, alice_clock) return result d.addCallback(get_Alice_magicfolder) @@ -147,7 +158,7 @@ class MagicFolderCLITestMixin(CLITestMixin, GridTestMixin): d.addCallback(lambda x: self.check_joined_config(1, self.bob_upload_dircap)) d.addCallback(lambda x: self.check_config(1, bob_magic_dir)) def get_Bob_magicfolder(result): - self.bob_magicfolder = self.init_magicfolder(1, self.bob_upload_dircap, self.bob_collective_dircap, bob_magic_dir, clock) + self.bob_magicfolder = self.init_magicfolder(1, self.bob_upload_dircap, self.bob_collective_dircap, bob_magic_dir, bob_clock) return result d.addCallback(get_Bob_magicfolder) diff --git a/src/allmydata/test/test_magic_folder.py b/src/allmydata/test/test_magic_folder.py index e0396334..75511b79 100644 --- a/src/allmydata/test/test_magic_folder.py +++ b/src/allmydata/test/test_magic_folder.py @@ -2,7 +2,7 @@ import os, sys from twisted.trial import unittest -from twisted.internet import defer +from twisted.internet import defer, task from allmydata.interfaces import IDirectoryNode @@ -313,7 +313,9 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual self.failUnlessEqual(version, expected_version) def test_alice_bob(self): - d = self.setup_alice_and_bob() + alice_clock = task.Clock() + bob_clock = task.Clock() + d = self.setup_alice_and_bob(alice_clock, bob_clock) def get_results(result): # XXX are these used? (self.alice_collective_dircap, self.alice_upload_dircap, self.alice_magicfolder, @@ -334,6 +336,7 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual def Alice_wait_for_upload(result): print "Alice waits for an upload\n" d2 = self.alice_magicfolder.uploader.set_hook('processed') + alice_clock.advance(0) return d2 d.addCallback(Alice_wait_for_upload) d.addCallback(lambda ign: self._check_version_in_dmd(self.alice_magicfolder, u"file1", 0)) @@ -348,6 +351,7 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual def Bob_wait_for_download(result): print "Bob waits for a download\n" d2 = self.bob_magicfolder.downloader.set_hook('processed') + bob_clock.advance(0) return d2 d.addCallback(Bob_wait_for_download) d.addCallback(lambda ign: self._check_version_in_local_db(self.bob_magicfolder, u"file1", 0)) @@ -361,7 +365,7 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual print "Alice deletes the file!\n" os.unlink(self.file_path) self.notify(to_filepath(self.file_path), self.inotify.IN_DELETE) - + alice_clock.advance(0) return None d.addCallback(Alice_delete_file) d.addCallback(Alice_wait_for_upload) @@ -378,9 +382,9 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual def Alice_rewrite_file(result): print "Alice rewrites file\n" + self.magicfolder = self.alice_magicfolder self.file_path = abspath_expanduser_unicode(u"file1", base=self.alice_magicfolder.uploader._local_path_u) fileutil.write(self.file_path, "Alice suddenly sees the white rabbit running into the forest.") - self.magicfolder = self.alice_magicfolder self.notify(to_filepath(self.file_path), self.inotify.IN_CLOSE_WRITE) d.addCallback(Alice_rewrite_file) @@ -406,8 +410,14 @@ class MagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, ReallyEqual print "cleanup alice bob test\n" d = defer.succeed(None) d.addCallback(lambda ign: self.alice_magicfolder.finish()) - d.addCallback(lambda ign: self.bob_magicfolder.finish()) - d.addCallback(lambda ign: result) + + def clean_bob(_): + d2 = self.bob_magicfolder.finish() + d2.addCallback(lambda ign: result) + bob_clock.advance(0) + return d2 + d.addCallback(clean_bob) + alice_clock.advance(0) return d d.addCallback(cleanup_Alice_and_Bob) return d