cpython/Lib/test/test_difflib.py

19 lines
473 B
Python

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)