mirror of https://github.com/python/cpython
25 lines
792 B
Python
25 lines
792 B
Python
import difflib
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from test import test_support
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import unittest
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import doctest
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class TestSFbugs(unittest.TestCase):
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def test_ratio_for_null_seqn(self):
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# Check clearing of SF bug 763023
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s = difflib.SequenceMatcher(None, [], [])
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self.assertEqual(s.ratio(), 1)
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self.assertEqual(s.quick_ratio(), 1)
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self.assertEqual(s.real_quick_ratio(), 1)
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def test_comparing_empty_lists(self):
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# Check fix for bug #979794
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group_gen = difflib.SequenceMatcher(None, [], []).get_grouped_opcodes()
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self.assertRaises(StopIteration, group_gen.next)
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diff_gen = difflib.unified_diff([], [])
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self.assertRaises(StopIteration, diff_gen.next)
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Doctests = doctest.DocTestSuite(difflib)
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test_support.run_unittest(TestSFbugs, Doctests)
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