Method test_failures

Lib/test/test_argparse.py:314–320

(self, tester)

                return parser

            def test_failures(self, tester):
                parser = self._get_parser(tester)
                for args_str in tester.failures:
                    args = args_str.split()
                    with tester.subTest(args=args):
                        with tester.assertRaises(ArgumentParserError, msg=args):
                            parser.parse_args(args)

            def test_successes(self, tester):
                parser = self._get_parser(tester)