From: Daira Hopwood Date: Fri, 11 Sep 2015 23:59:51 +0000 (+0100) Subject: Avoid spurious errors when an imported version is consistent with pkg_resources X-Git-Url: https://git.rkrishnan.org/components/%22news.html/running.html?a=commitdiff_plain;h=refs%2Fpull%2F188%2Fhead;p=tahoe-lafs%2Ftahoe-lafs.git Avoid spurious errors when an imported version is consistent with pkg_resources but not parseable; also improve related error reporting. fixes ticket:2499 Signed-off-by: Daira Hopwood --- diff --git a/src/allmydata/__init__.py b/src/allmydata/__init__.py index 0b0c5f81..fa512a13 100644 --- a/src/allmydata/__init__.py +++ b/src/allmydata/__init__.py @@ -146,7 +146,8 @@ def get_platform(): from allmydata.util import verlib def normalized_version(verstr, what=None): try: - return verlib.NormalizedVersion(verlib.suggest_normalized_version(verstr)) + suggested = verlib.suggest_normalized_version(verstr) or verstr + return verlib.NormalizedVersion(suggested) except (StandardError, verlib.IrrationalVersionError): cls, value, trace = sys.exc_info() raise PackagingError, ("could not parse %s due to %s: %s" @@ -351,6 +352,11 @@ def cross_check(pkg_resources_vers_and_locs, imported_vers_and_locs_list): % (name, pr_ver, pr_loc, imp_comment)) continue + # If the pkg_resources version is identical to the imported version, don't attempt + # to normalize them, since it is unnecessary and may fail (ticket #2499). + if imp_ver != 'unknown' and pr_ver == imp_ver: + continue + try: pr_normver = normalized_version(pr_ver) except Exception, e: diff --git a/src/allmydata/test/test_version.py b/src/allmydata/test/test_version.py index 7851f91a..ee149b0e 100644 --- a/src/allmydata/test/test_version.py +++ b/src/allmydata/test/test_version.py @@ -91,17 +91,24 @@ class CheckRequirement(unittest.TestCase): self.failIfEqual(errors, []) self.failUnlessEqual([e for e in errors if "was not found by pkg_resources" not in e], []) - def test_cross_check_ticket_1355(self): + def test_cross_check_unparseable_versions(self): # The bug in #1355 is triggered when a version string from either pkg_resources or import # is not parseable at all by normalized_version. res = cross_check({"foo": ("unparseable", "")}, [("foo", ("1.0", "", None))]) self.failUnlessEqual(len(res), 1) self.failUnlessIn("by pkg_resources could not be parsed", res[0]) + self.failUnlessIn("due to IrrationalVersionError", res[0]) res = cross_check({"foo": ("1.0", "")}, [("foo", ("unparseable", "", None))]) self.failUnlessEqual(len(res), 1) self.failUnlessIn(") could not be parsed", res[0]) + self.failUnlessIn("due to IrrationalVersionError", res[0]) + + # However, an error should not be triggered when the version strings are unparseable + # but equal (#2499). + res = cross_check({"foo": ("unparseable", "")}, [("foo", ("unparseable", "", None))]) + self.failUnlessEqual(res, []) def test_cross_check(self): res = cross_check({}, []) @@ -134,10 +141,18 @@ class CheckRequirement(unittest.TestCase): res = cross_check({"zope.interface": ("1.0", "")}, [("zope.interface", ("unknown", "", None))]) self.failUnlessEqual(res, []) + res = cross_check({"zope.interface": ("unknown", "")}, [("zope.interface", ("unknown", "", None))]) + self.failUnlessEqual(len(res), 1) + self.failUnlessIn("could not be parsed", res[0]) + res = cross_check({"foo": ("1.0", "")}, [("foo", ("unknown", "", None))]) self.failUnlessEqual(len(res), 1) self.failUnlessIn("could not find a version number", res[0]) + res = cross_check({"foo": ("unknown", "")}, [("foo", ("unknown", "", None))]) + self.failUnlessEqual(len(res), 1) + self.failUnlessIn("could not be parsed", res[0]) + # When pkg_resources and import both find a package, there is only a warning if both # the version and the path fail to match.