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# Copyright (c) 2006-2008 Twisted Matrix Laboratories.
# See LICENSE for details.
import sys
from cStringIO import StringIO
from twisted.python.versions import getVersionString, IncomparableVersions
from twisted.python.versions import Version, _inf
from twisted.python.filepath import FilePath
from twisted.trial import unittest
VERSION_4_ENTRIES = """\
<?xml version="1.0" encoding="utf-8"?>
<wc-entries
xmlns="svn:">
<entry
committed-rev="18210"
name=""
committed-date="2006-09-21T04:43:09.542953Z"
url="svn+ssh://svn.twistedmatrix.com/svn/Twisted/trunk/twisted"
last-author="exarkun"
kind="dir"
uuid="bbbe8e31-12d6-0310-92fd-ac37d47ddeeb"
repos="svn+ssh://svn.twistedmatrix.com/svn/Twisted"
revision="18211"/>
</wc-entries>
"""
VERSION_8_ENTRIES = """\
8
dir
22715
svn+ssh://svn.twistedmatrix.com/svn/Twisted/trunk
"""
VERSION_9_ENTRIES = """\
9
dir
22715
svn+ssh://svn.twistedmatrix.com/svn/Twisted/trunk
"""
VERSION_10_ENTRIES = """\
10
dir
22715
svn+ssh://svn.twistedmatrix.com/svn/Twisted/trunk
"""
class VersionsTest(unittest.TestCase):
def test_versionComparison(self):
"""
Versions can be compared for equality and order.
"""
va = Version("dummy", 1, 0, 0)
vb = Version("dummy", 0, 1, 0)
self.failUnless(va > vb)
self.failUnless(vb < va)
self.failUnless(va >= vb)
self.failUnless(vb <= va)
self.failUnless(va != vb)
self.failUnless(vb == Version("dummy", 0, 1, 0))
self.failUnless(vb == vb)
# BREAK IT DOWN@!!
self.failIf(va < vb)
self.failIf(vb > va)
self.failIf(va <= vb)
self.failIf(vb >= va)
self.failIf(va == vb)
self.failIf(vb != Version("dummy", 0, 1, 0))
self.failIf(vb != vb)
def test_comparingPrereleasesWithReleases(self):
"""
Prereleases are always less than versions without prereleases.
"""
va = Version("whatever", 1, 0, 0, prerelease=1)
vb = Version("whatever", 1, 0, 0)
self.assertTrue(va < vb)
self.assertFalse(va > vb)
self.assertNotEquals(vb, va)
def test_comparingPrereleases(self):
"""
The value specified as the prerelease is used in version comparisons.
"""
va = Version("whatever", 1, 0, 0, prerelease=1)
vb = Version("whatever", 1, 0, 0, prerelease=2)
self.assertTrue(va < vb)
self.assertFalse(va > vb)
self.assertNotEqual(va, vb)
def test_infComparison(self):
"""
L{_inf} is equal to L{_inf}.
This is a regression test.
"""
self.assertEquals(_inf, _inf)
def testDontAllowBuggyComparisons(self):
self.assertRaises(IncomparableVersions,
cmp,
Version("dummy", 1, 0, 0),
Version("dumym", 1, 0, 0))
def test_repr(self):
"""
Calling C{repr} on a version returns a human-readable string
representation of the version.
"""
self.assertEquals(repr(Version("dummy", 1, 2, 3)),
"Version('dummy', 1, 2, 3)")
def test_reprWithPrerelease(self):
"""
Calling C{repr} on a version with a prerelease returns a human-readable
string representation of the version including the prerelease.
"""
self.assertEquals(repr(Version("dummy", 1, 2, 3, prerelease=4)),
"Version('dummy', 1, 2, 3, prerelease=4)")
def test_str(self):
"""
Calling C{str} on a version returns a human-readable string
representation of the version.
"""
self.assertEquals(str(Version("dummy", 1, 2, 3)),
"[dummy, version 1.2.3]")
def test_strWithPrerelease(self):
"""
Calling C{str} on a version with a prerelease includes the prerelease.
"""
self.assertEquals(str(Version("dummy", 1, 0, 0, prerelease=1)),
"[dummy, version 1.0.0pre1]")
def testShort(self):
self.assertEquals(Version('dummy', 1, 2, 3).short(), '1.2.3')
def test_goodSVNEntries_4(self):
"""
Version should be able to parse an SVN format 4 entries file.
"""
version = Version("dummy", 1, 0, 0)
self.assertEquals(
version._parseSVNEntries_4(StringIO(VERSION_4_ENTRIES)), '18211')
def test_goodSVNEntries_8(self):
"""
Version should be able to parse an SVN format 8 entries file.
"""
version = Version("dummy", 1, 0, 0)
self.assertEqual(
version._parseSVNEntries_8(StringIO(VERSION_8_ENTRIES)), '22715')
def test_goodSVNEntries_9(self):
"""
Version should be able to parse an SVN format 9 entries file.
"""
version = Version("dummy", 1, 0, 0)
self.assertEqual(
version._parseSVNEntries_9(StringIO(VERSION_9_ENTRIES)), '22715')
def test_goodSVNEntriesTenPlus(self):
"""
Version should be able to parse an SVN format 10 entries file.
"""
version = Version("dummy", 1, 0, 0)
self.assertEqual(
version._parseSVNEntriesTenPlus(StringIO(VERSION_10_ENTRIES)), '22715')
def test_getVersionString(self):
"""
L{getVersionString} returns a string with the package name and the
short version number.
"""
self.assertEqual(
'Twisted 8.0.0', getVersionString(Version('Twisted', 8, 0, 0)))
def test_getVersionStringWithPrerelease(self):
"""
L{getVersionString} includes the prerelease, if any.
"""
self.assertEqual(
getVersionString(Version("whatever", 8, 0, 0, prerelease=1)),
"whatever 8.0.0pre1")
def test_base(self):
"""
The L{base} method returns a very simple representation of the version.
"""
self.assertEquals(Version("foo", 1, 0, 0).base(), "1.0.0")
def test_baseWithPrerelease(self):
"""
The base version includes 'preX' for versions with prereleases.
"""
self.assertEquals(Version("foo", 1, 0, 0, prerelease=8).base(),
"1.0.0pre8")
class FormatDiscoveryTests(unittest.TestCase):
"""
Tests which discover the parsing method based on the imported module name.
"""
def setUp(self):
"""
Create a temporary directory with a package structure in it.
"""
self.entry = FilePath(self.mktemp())
self.preTestModules = sys.modules.copy()
sys.path.append(self.entry.path)
pkg = self.entry.child("twisted_python_versions_package")
pkg.makedirs()
pkg.child("__init__.py").setContent(
"from twisted.python.versions import Version\n"
"version = Version('twisted_python_versions_package', 1, 0, 0)\n")
self.svnEntries = pkg.child(".svn")
self.svnEntries.makedirs()
def tearDown(self):
"""
Remove the imported modules and sys.path modifications.
"""
sys.modules.clear()
sys.modules.update(self.preTestModules)
sys.path.remove(self.entry.path)
def checkSVNFormat(self, formatVersion, entriesText, expectedRevision):
"""
Check for the given revision being detected after setting the SVN
entries text and format version of the test directory structure.
"""
self.svnEntries.child("format").setContent(formatVersion+"\n")
self.svnEntries.child("entries").setContent(entriesText)
self.assertEqual(self.getVersion()._getSVNVersion(), expectedRevision)
def getVersion(self):
"""
Import and retrieve the Version object from our dynamically created
package.
"""
import twisted_python_versions_package
return twisted_python_versions_package.version
def test_detectVersion4(self):
"""
Verify that version 4 format file will be properly detected and parsed.
"""
self.checkSVNFormat("4", VERSION_4_ENTRIES, '18211')
def test_detectVersion8(self):
"""
Verify that version 8 format files will be properly detected and
parsed.
"""
self.checkSVNFormat("8", VERSION_8_ENTRIES, '22715')
def test_detectVersion9(self):
"""
Verify that version 9 format files will be properly detected and
parsed.
"""
self.checkSVNFormat("9", VERSION_9_ENTRIES, '22715')
def test_detectVersion10(self):
"""
Verify that version 10 format files will be properly detected and
parsed.
Differing from previous formats, the version 10 format lacks a
I{format} file and B{only} has the version information on the first
line of the I{entries} file.
"""
self.svnEntries.child("entries").setContent(VERSION_10_ENTRIES)
self.assertEquals(self.getVersion()._getSVNVersion(), '22715')
def test_detectUnknownVersion(self):
"""
Verify that a new version of SVN will result in the revision 'Unknown'.
"""
self.checkSVNFormat("some-random-new-version", "ooga booga!", 'Unknown')
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