Method test_multiple_parents_mutex

Lib/test/test_argparse.py:3195–3203

(self)

                         NS(a='3', b=None, d='1', w='2', y=None, z='4'))

    def test_multiple_parents_mutex(self):
        parents = [self.ab_mutex_parent, self.wxyz_parent]
        parser = ErrorRaisingArgumentParser(parents=parents)
        self.assertEqual(parser.parse_args('-a --w 2 3'.split()),
                         NS(a=True, b=False, w='2', y=None, z='3'))
        self.assertArgumentParserError(
            parser.parse_args, '-a --w 2 3 -b'.split())
        self.assertArgumentParserError(
            parser.parse_args, '-a -b --w 2 3'.split())

    def test_conflicting_parents(self):
        self.assertRaises(