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Diffstat (limited to 'Lib/test/test_difflib.py')
| -rw-r--r-- | Lib/test/test_difflib.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/test/test_difflib.py b/Lib/test/test_difflib.py index 17037547f6..9819c84567 100644 --- a/Lib/test/test_difflib.py +++ b/Lib/test/test_difflib.py @@ -12,6 +12,13 @@ class TestSFbugs(unittest.TestCase): self.assertEqual(s.quick_ratio(), 1) self.assertEqual(s.real_quick_ratio(), 1) + def test_comparing_empty_lists(self): + # Check fix for bug #979794 + group_gen = difflib.SequenceMatcher(None, [], []).get_grouped_opcodes() + self.assertRaises(StopIteration, group_gen.next) + diff_gen = difflib.unified_diff([], []) + self.assertRaises(StopIteration, diff_gen.next) + Doctests = doctest.DocTestSuite(difflib) test_support.run_unittest(TestSFbugs, Doctests) |