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bzrlib/tests/test_diff.py
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    )
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from bzrlib.errors import BinaryFile, NoDiff, ExecutableMissing
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import bzrlib.osutils as osutils
 
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import bzrlib.revision as _mod_revision
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import bzrlib.transform as transform
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import bzrlib.patiencediff
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import bzrlib._patiencediff_py
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''')
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    def test_diff_add_files(self):
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        tree1 = self.b.repository.revision_tree(None)
 
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        tree1 = self.b.repository.revision_tree(_mod_revision.NULL_REVISION)
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        tree2 = self.b.repository.revision_tree('rev-1')
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        output = self.get_diff(tree1, tree2)
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        # the files have the epoch time stamp for the tree in which
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        self._PatienceSequenceMatcher = \
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            bzrlib._patiencediff_py.PatienceSequenceMatcher_py
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    def test_diff_unicode_string(self):
 
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        a = ''.join([unichr(i) for i in range(4000, 4500, 3)])
 
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        b = ''.join([unichr(i) for i in range(4300, 4800, 2)])
 
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        sm = self._PatienceSequenceMatcher(None, a, b)
 
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        mb = sm.get_matching_blocks()
 
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        self.assertEquals(35, len(mb))
 
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    def test_unique_lcs(self):
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        unique_lcs = self._unique_lcs
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        self.assertEquals(unique_lcs('', ''), [])