def METHOD_NAME(self):
    for inp, exp in [('\\\\', '\\'),
                     ('\\\\\\', '\\'),
                     ('\\\\\\\\', '\\\\'),
                     ('\\\\\\\\\\', '\\\\'),
                     ('x\\\\x', 'x\\x'),
                     ('x\\\\\\x', 'x\\x'),
                     ('x\\\\\\\\x', 'x\\\\x')]:
        assert_unescape(inp, exp)