674
ver = k.add_lines('text%d' % i,
696
ver = k.add('text%d' % i,
675
697
list(parents), t)
676
parents.add('text%d' % i)
679
701
self.log("k._weave=" + pformat(k._weave))
681
703
for i, t in enumerate(texts):
682
self.assertEqual(k.get_lines(i), t)
704
self.assertEqual(k.get(i), t)
684
706
self.check_read_write(k)
687
class JoinWeavesTests(TestBase):
689
super(JoinWeavesTests, self).setUp()
690
self.weave1 = Weave()
691
self.lines1 = ['hello\n']
692
self.lines3 = ['hello\n', 'cruel\n', 'world\n']
693
self.weave1.add_lines('v1', [], self.lines1)
694
self.weave1.add_lines('v2', ['v1'], ['hello\n', 'world\n'])
695
self.weave1.add_lines('v3', ['v2'], self.lines3)
697
def test_join_empty(self):
698
"""Join two empty weaves."""
699
eq = self.assertEqual
705
def test_join_empty_to_nonempty(self):
706
"""Join empty weave onto nonempty."""
707
self.weave1.join(Weave())
708
self.assertEqual(len(self.weave1), 3)
710
def test_join_unrelated(self):
711
"""Join two weaves with no history in common."""
713
wb.add_lines('b1', [], ['line from b\n'])
716
eq = self.assertEqual
718
eq(sorted(w1.versions()),
719
['b1', 'v1', 'v2', 'v3'])
721
def test_join_related(self):
722
wa = self.weave1.copy()
723
wb = self.weave1.copy()
724
wa.add_lines('a1', ['v3'], ['hello\n', 'sweet\n', 'world\n'])
725
wb.add_lines('b1', ['v3'], ['hello\n', 'pale blue\n', 'world\n'])
726
eq = self.assertEquals
731
eq(wa.get_lines('b1'),
732
['hello\n', 'pale blue\n', 'world\n'])
734
def test_join_parent_disagreement(self):
735
#join reconciles differening parents into a union.
738
wa.add_lines('v1', [], ['hello\n'])
739
wb.add_lines('v0', [], [])
740
wb.add_lines('v1', ['v0'], ['hello\n'])
742
self.assertEqual(['v0'], wa.get_parents('v1'))
744
def test_join_text_disagreement(self):
745
"""Cannot join weaves with different texts for a version."""
748
wa.add_lines('v1', [], ['hello\n'])
749
wb.add_lines('v1', [], ['not\n', 'hello\n'])
750
self.assertRaises(WeaveError,
753
def test_join_unordered(self):
754
"""Join weaves where indexes differ.
756
The source weave contains a different version at index 0."""
757
wa = self.weave1.copy()
759
wb.add_lines('x1', [], ['line from x1\n'])
760
wb.add_lines('v1', [], ['hello\n'])
761
wb.add_lines('v2', ['v1'], ['hello\n', 'world\n'])
763
eq = self.assertEquals
764
eq(sorted(wa.versions()), ['v1', 'v2', 'v3', 'x1',])
765
eq(wa.get_text('x1'), 'line from x1\n')
767
def test_written_detection(self):
768
# Test detection of weave file corruption.
770
# Make sure that we can detect if a weave file has
771
# been corrupted. This doesn't test all forms of corruption,
772
# but it at least helps verify the data you get, is what you want.
710
class MergeCases(TestBase):
711
def doMerge(self, base, a, b, mp):
773
712
from cStringIO import StringIO
713
from textwrap import dedent
776
w.add_lines('v1', [], ['hello\n'])
777
w.add_lines('v2', ['v1'], ['hello\n', 'there\n'])
719
w.add('text0', [], map(addcrlf, base))
720
w.add('text1', [0], map(addcrlf, a))
721
w.add('text2', [0], map(addcrlf, b))
723
self.log('weave is:')
779
724
tmpf = StringIO()
780
725
write_weave(w, tmpf)
782
# Because we are corrupting, we need to make sure we have the exact text
783
self.assertEquals('# bzr weave file v5\n'
784
'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
785
'i 0\n1 90f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
786
'w\n{ 0\n. hello\n}\n{ 1\n. there\n}\nW\n',
789
# Change a single letter
790
tmpf = StringIO('# bzr weave file v5\n'
791
'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
792
'i 0\n1 90f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
793
'w\n{ 0\n. hello\n}\n{ 1\n. There\n}\nW\n')
797
self.assertEqual('hello\n', w.get_text('v1'))
798
self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
799
self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
800
self.assertRaises(errors.WeaveInvalidChecksum, w.check)
802
# Change the sha checksum
803
tmpf = StringIO('# bzr weave file v5\n'
804
'i\n1 f572d396fae9206628714fb2ce00f72e94f2258f\nn v1\n\n'
805
'i 0\n1 f0f265c6e75f1c8f9ab76dcf85528352c5f215ef\nn v2\n\n'
806
'w\n{ 0\n. hello\n}\n{ 1\n. there\n}\nW\n')
810
self.assertEqual('hello\n', w.get_text('v1'))
811
self.assertRaises(errors.WeaveInvalidChecksum, w.get_text, 'v2')
812
self.assertRaises(errors.WeaveInvalidChecksum, w.get_lines, 'v2')
813
self.assertRaises(errors.WeaveInvalidChecksum, w.check)
816
class InstrumentedWeave(Weave):
817
"""Keep track of how many times functions are called."""
819
def __init__(self, weave_name=None):
820
self._extract_count = 0
821
Weave.__init__(self, weave_name=weave_name)
823
def _extract(self, versions):
824
self._extract_count += 1
825
return Weave._extract(self, versions)
828
class JoinOptimization(TestCase):
829
"""Test that Weave.join() doesn't extract all texts, only what must be done."""
832
w1 = InstrumentedWeave()
833
w2 = InstrumentedWeave()
836
txt1 = ['a\n', 'b\n']
837
txt2 = ['a\n', 'c\n']
838
txt3 = ['a\n', 'b\n', 'c\n']
840
w1.add_lines('txt0', [], txt0) # extract 1a
841
w2.add_lines('txt0', [], txt0) # extract 1b
842
w1.add_lines('txt1', ['txt0'], txt1)# extract 2a
843
w2.add_lines('txt2', ['txt0'], txt2)# extract 2b
844
w1.join(w2) # extract 3a to add txt2
845
w2.join(w1) # extract 3b to add txt1
847
w1.add_lines('txt3', ['txt1', 'txt2'], txt3) # extract 4a
848
w2.add_lines('txt3', ['txt2', 'txt1'], txt3) # extract 4b
849
# These secretly have inverted parents
851
# This should not have to do any extractions
852
w1.join(w2) # NO extract, texts already present with same parents
853
w2.join(w1) # NO extract, texts already present with same parents
855
self.assertEqual(4, w1._extract_count)
856
self.assertEqual(4, w2._extract_count)
858
def test_double_parent(self):
859
# It should not be considered illegal to add
860
# a revision with the same parent twice
861
w1 = InstrumentedWeave()
862
w2 = InstrumentedWeave()
865
txt1 = ['a\n', 'b\n']
866
txt2 = ['a\n', 'c\n']
867
txt3 = ['a\n', 'b\n', 'c\n']
869
w1.add_lines('txt0', [], txt0)
870
w2.add_lines('txt0', [], txt0)
871
w1.add_lines('txt1', ['txt0'], txt1)
872
w2.add_lines('txt1', ['txt0', 'txt0'], txt1)
873
# Same text, effectively the same, because the
874
# parent is only repeated
875
w1.join(w2) # extract 3a to add txt2
876
w2.join(w1) # extract 3b to add txt1
879
class TestNeedsReweave(TestCase):
880
"""Internal corner cases for when reweave is needed."""
882
def test_compatible_parents(self):
884
my_parents = set([1, 2, 3])
886
self.assertTrue(w1._compatible_parents(my_parents, set([3])))
888
self.assertTrue(w1._compatible_parents(my_parents, set(my_parents)))
889
# same empty corner case
890
self.assertTrue(w1._compatible_parents(set(), set()))
891
# other cannot contain stuff my_parents does not
892
self.assertFalse(w1._compatible_parents(set(), set([1])))
893
self.assertFalse(w1._compatible_parents(my_parents, set([1, 2, 3, 4])))
894
self.assertFalse(w1._compatible_parents(my_parents, set([4])))
897
class TestWeaveFile(TestCaseInTempDir):
899
def test_empty_file(self):
900
f = open('empty.weave', 'wb+')
902
self.assertRaises(errors.WeaveFormatError,
726
self.log(tmpf.getvalue())
728
self.log('merge plan:')
729
p = list(w.plan_merge(1, 2))
730
for state, line in p:
732
self.log('%12s | %s' % (state, line[:-1]))
736
mt.writelines(w.weave_merge(p))
738
self.log(mt.getvalue())
740
mp = map(addcrlf, mp)
741
self.assertEqual(mt.readlines(), mp)
744
def testOneInsert(self):
750
def testSeparateInserts(self):
751
self.doMerge(['aaa', 'bbb', 'ccc'],
752
['aaa', 'xxx', 'bbb', 'ccc'],
753
['aaa', 'bbb', 'yyy', 'ccc'],
754
['aaa', 'xxx', 'bbb', 'yyy', 'ccc'])
756
def testSameInsert(self):
757
self.doMerge(['aaa', 'bbb', 'ccc'],
758
['aaa', 'xxx', 'bbb', 'ccc'],
759
['aaa', 'xxx', 'bbb', 'yyy', 'ccc'],
760
['aaa', 'xxx', 'bbb', 'yyy', 'ccc'])
762
def testOverlappedInsert(self):
763
self.doMerge(['aaa', 'bbb'],
764
['aaa', 'xxx', 'yyy', 'bbb'],
765
['aaa', 'xxx', 'bbb'],
766
['aaa', '<<<<', 'xxx', 'yyy', '====', 'xxx', '>>>>', 'bbb'])
768
# really it ought to reduce this to
769
# ['aaa', 'xxx', 'yyy', 'bbb']
772
def testClashReplace(self):
773
self.doMerge(['aaa'],
776
['<<<<', 'xxx', '====', 'yyy', 'zzz', '>>>>'])
778
def testNonClashInsert(self):
779
self.doMerge(['aaa'],
782
['<<<<', 'xxx', 'aaa', '====', 'yyy', 'zzz', '>>>>'])
784
self.doMerge(['aaa'],
790
def testDeleteAndModify(self):
791
"""Clashing delete and modification.
793
If one side modifies a region and the other deletes it then
794
there should be a conflict with one side blank.
797
#######################################
798
# skippd, not working yet
801
self.doMerge(['aaa', 'bbb', 'ccc'],
802
['aaa', 'ddd', 'ccc'],
804
['<<<<', 'aaa', '====', '>>>>', 'ccc'])
808
if __name__ == '__main__':
811
sys.exit(unittest.main())
added
removed
bzrlib/selftest/test_weave.py
