import difflib | |
from test import test_support | |
import unittest | |
import doctest | |
class TestSFbugs(unittest.TestCase): | |
def test_ratio_for_null_seqn(self): | |
# Check clearing of SF bug 763023 | |
s = difflib.SequenceMatcher(None, [], []) | |
self.assertEqual(s.ratio(), 1) | |
self.assertEqual(s.quick_ratio(), 1) | |
self.assertEqual(s.real_quick_ratio(), 1) | |
Doctests = doctest.DocTestSuite(difflib) | |
test_support.run_unittest(TestSFbugs, Doctests) |