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Viewing changes to bzrlib/tests/test_weave.py

  • Committer: Robert Collins
  • Date: 2006-01-05 22:30:59 UTC
  • mto: (1534.1.4 integration)
  • mto: This revision was merged to the branch mainline in revision 1536.
  • Revision ID: robertc@robertcollins.net-20060105223059-a8b64f7b47cf12fb
 * bzrlib.osutils.safe_unicode now exists to provide parameter coercion
   for functions that need unicode strings. (Robert Collins)

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bzrlib/tests/test_weave.py
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import bzrlib.errors as errors
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from bzrlib.weave import Weave, WeaveFormatError, WeaveError, reweave
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from bzrlib.weavefile import write_weave, read_weave
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from bzrlib.selftest import TestCase
 
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from bzrlib.tests import TestCase
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from bzrlib.osutils import sha_string
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          "A second line"]
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class TestBase(TestCase):
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    def check_read_write(self, k):
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        """Check the weave k can be written & re-read."""
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        self.assertEqual(idx, 0)
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class AnnotateOne(TestBase):
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    def runTest(self):
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        k = Weave()
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        self.assertEqual(k.get(1), TEXT_1)
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111
 
 
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class AddWithGivenSha(TestBase):
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    def runTest(self):
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        """Add with caller-supplied SHA-1"""
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        k.add('text0', [], [t], sha1=sha_string(t))
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class GetSha1(TestBase):
 
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    def test_get_sha1(self):
 
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        k = Weave()
 
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        k.add('text0', [], 'text0')
 
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        self.assertEqual('34dc0e430c642a26c3dd1c2beb7a8b4f4445eb79',
 
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                         k.get_sha1('text0'))
 
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        self.assertRaises(errors.WeaveRevisionNotPresent,
 
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                          k.get_sha1, 0)
 
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        self.assertRaises(errors.WeaveRevisionNotPresent,
 
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                          k.get_sha1, 'text1')
 
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class InvalidAdd(TestBase):
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    """Try to use invalid version number during add."""
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        self.assertEqual(idx, idx2)
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class InvalidRepeatedAdd(TestBase):
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    def runTest(self):
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        k = Weave()
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                          TEXT_0)
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class InsertLines(TestBase):
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    """Store a revision that adds one line to the original.
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                          (4, 'ccc')])
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class DeleteLines(TestBase):
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    """Deletion of lines from existing text.
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        for i in range(len(texts)):
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            self.assertEqual(k.get(i+1),
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                             texts[i])
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class SuicideDelete(TestBase):
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                          0)        
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class CannedDelete(TestBase):
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    """Unpack canned weave with deleted lines."""
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    def runTest(self):
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                'last line',
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                ('}', 0),
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                ]
 
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        k._sha1s = [sha_string('first lineline to be deletedlast line')
 
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                  , sha_string('first linelast line')]
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        self.assertEqual(k.get(0),
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                         ['first line',
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                          ])
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class CannedReplacement(TestBase):
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    """Unpack canned weave with deleted lines."""
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    def runTest(self):
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                'last line',
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                ('}', 0),
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                ]
 
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        k._sha1s = [sha_string('first lineline to be deletedlast line')
 
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                  , sha_string('first linereplacement linelast line')]
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        self.assertEqual(k.get(0),
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                         ['first line',
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                          ])
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class BadWeave(TestBase):
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    """Test that we trap an insert which should not occur."""
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    def runTest(self):
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                '}',
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                ('}', 0)]
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        k._sha1s = [sha_string('foo {}')
 
429
                  , sha_string('foo {  added in version 1  also from v1}')
 
430
                  , sha_string('foo {  added in v2}')
 
431
                  , sha_string('foo {  added in version 1  added in v2  also from v1}')
 
432
                  ]
 
433
 
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        self.assertEqual(k.get(0),
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                         ['foo {',
426
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                          '}'])
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                          '}'])
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446
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447
 
 
448
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class DeleteLines2(TestBase):
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    """Test recording revisions that delete lines.
450
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                          (0, "fine")])
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475
 
 
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class IncludeVersions(TestBase):
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    """Check texts that are stored across multiple revisions.
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                "second line",
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                ('}', 1)]
496
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505
        k._sha1s = [sha_string('first line')
 
506
                  , sha_string('first linesecond line')]
 
507
 
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        self.assertEqual(k.get(1),
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                         ["first line",
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                          "second line"])
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                ('}', 2),                
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                ]
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537
        k._sha1s = [sha_string('first line')
 
538
                  , sha_string('first linesecond line')
 
539
                  , sha_string('first linealternative second line')]
 
540
 
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        self.assertEqual(k.get(0),
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                         ["first line"])
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                         [0, 2])
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541
 
 
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class ReplaceLine(TestBase):
543
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    def runTest(self):
544
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        k = Weave()
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        self.assertEqual(k.get(1), text1)
556
570
 
557
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558
 
 
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class Merge(TestBase):
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    """Storage of versions that merge diverged parents"""
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    def runTest(self):
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                           [['bbb']]])
613
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614
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615
 
 
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class NonConflict(TestBase):
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    """Two descendants insert compatible changes.
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        k.add([0], ['111', 'aaa', 'ccc', 'bbb'])
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        k.add([1], ['aaa', 'ccc', 'bbb', '222'])
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628
 
    
629
 
    
630
 
 
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class AutoMerge(TestBase):
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    def runTest(self):
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                          'line from 1',
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                          'bbb',
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                          'line from 2', 'more from 2'])
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class Khayyam(TestBase):
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        self.check_read_write(k)
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class MergeCases(TestBase):
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    def doMerge(self, base, a, b, mp):
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        from cStringIO import StringIO
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        eq = self.assertEquals
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        eq(sorted(wa.iter_names()), ['v1', 'v2', 'v3', 'x1',])
883
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        eq(wa.get_text('x1'), 'line from x1\n')
 
891
 
 
892
 
 
893
class Corruption(TestCase):
 
894
 
 
895
    def test_detection(self):
 
896
        # Test weaves detect corruption.
 
897
        #
 
898
        # Weaves contain a checksum of their texts.
 
899
        # When a text is extracted, this checksum should be
 
900
        # verified.
 
901
 
 
902
        w = Weave()
 
903
        w.add('v1', [], ['hello\n'])
 
904
        w.add('v2', ['v1'], ['hello\n', 'there\n'])
 
905
 
 
906
        # We are going to invasively corrupt the text
 
907
        # Make sure the internals of weave are the same
 
908
        self.assertEqual([('{', 0)
 
909
                        , 'hello\n'
 
910
                        , ('}', None)
 
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                        , ('{', 1)
 
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                        , 'there\n'
 
913
                        , ('}', None)
 
914
                        ], w._weave)
 
915
 
 
916
        self.assertEqual(['f572d396fae9206628714fb2ce00f72e94f2258f'
 
917
                        , '90f265c6e75f1c8f9ab76dcf85528352c5f215ef'
 
918
                        ], w._sha1s)
 
919
        w.check()
 
920
 
 
921
        # Corrupted
 
922
        w._weave[4] = 'There\n'
 
923
 
 
924
        self.assertEqual('hello\n', w.get_text('v1'))
 
925
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
 
926
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
 
927
        self.assertRaises(errors.WeaveInvalidChecksum, list, w.get_iter('v2'))
 
928
        self.assertRaises(errors.WeaveInvalidChecksum, w.check)
 
929
 
 
930
        # Corrected
 
931
        w._weave[4] = 'there\n'
 
932
        self.assertEqual('hello\nthere\n', w.get_text('v2'))
 
933
 
 
934
        #Invalid checksum, first digit changed
 
935
        w._sha1s[1] =  'f0f265c6e75f1c8f9ab76dcf85528352c5f215ef'
 
936
 
 
937
        self.assertEqual('hello\n', w.get_text('v1'))
 
938
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
 
939
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
 
940
        self.assertRaises(errors.WeaveInvalidChecksum, list, w.get_iter('v2'))
 
941
        self.assertRaises(errors.WeaveInvalidChecksum, w.check)
 
942
 
 
943
    def test_written_detection(self):
 
944
        # Test detection of weave file corruption.
 
945
        #
 
946
        # Make sure that we can detect if a weave file has
 
947
        # been corrupted. This doesn't test all forms of corruption,
 
948
        # but it at least helps verify the data you get, is what you want.
 
949
        from cStringIO import StringIO
 
950
 
 
951
        w = Weave()
 
952
        w.add('v1', [], ['hello\n'])
 
953
        w.add('v2', ['v1'], ['hello\n', 'there\n'])
 
954
 
 
955
        tmpf = StringIO()
 
956
        write_weave(w, tmpf)
 
957
 
 
958
        # Because we are corrupting, we need to make sure we have the exact text
 
959
        self.assertEquals('# bzr weave file v5\n'
 
960
                          'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
 
961
                          'i 0\n1 90f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
 
962
                          'w\n{ 0\n. hello\n}\n{ 1\n. there\n}\nW\n',
 
963
                          tmpf.getvalue())
 
964
 
 
965
        # Change a single letter
 
966
        tmpf = StringIO('# bzr weave file v5\n'
 
967
                        'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
 
968
                        'i 0\n1 90f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
 
969
                        'w\n{ 0\n. hello\n}\n{ 1\n. There\n}\nW\n')
 
970
 
 
971
        w = read_weave(tmpf)
 
972
 
 
973
        self.assertEqual('hello\n', w.get_text('v1'))
 
974
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
 
975
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
 
976
        self.assertRaises(errors.WeaveInvalidChecksum, list, w.get_iter('v2'))
 
977
        self.assertRaises(errors.WeaveInvalidChecksum, w.check)
 
978
 
 
979
        # Change the sha checksum
 
980
        tmpf = StringIO('# bzr weave file v5\n'
 
981
                        'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
 
982
                        'i 0\n1 f0f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
 
983
                        'w\n{ 0\n. hello\n}\n{ 1\n. there\n}\nW\n')
 
984
 
 
985
        w = read_weave(tmpf)
 
986
 
 
987
        self.assertEqual('hello\n', w.get_text('v1'))
 
988
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
 
989
        self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
 
990
        self.assertRaises(errors.WeaveInvalidChecksum, list, w.get_iter('v2'))
 
991
        self.assertRaises(errors.WeaveInvalidChecksum, w.check)
 
992
 
 
993