Method test_close_matches_aligned

Lib/test/test_difflib.py:286–304

(self)

class TestDiffer(unittest.TestCase):
    def test_close_matches_aligned(self):
        # Of the 4 closely matching pairs, we want 1 to match with 3,
        # and 2 with 4, to align with a "top to bottom" mental model.
        a = ["cat\n", "dog\n", "close match 1\n", "close match 2\n"]
        b = ["close match 3\n", "close match 4\n", "kitten\n", "puppy\n"]
        m = difflib.Differ().compare(a, b)
        self.assertEqual(list(m),
                           ['- cat\n',
                            '- dog\n',
                            '- close match 1\n',
                            '?             ^\n',
                            '+ close match 3\n',
                            '?             ^\n',
                            '- close match 2\n',
                            '?             ^\n',
                            '+ close match 4\n',
                            '?             ^\n',
                            '+ kitten\n',
                            '+ puppy\n'])

    def test_one_insert(self):
        m = difflib.Differ().compare('b' * 2, 'a' + 'b' * 2)