Method test_failures_when_required

Lib/test/test_argparse.py:3444–3449

(self)

                self.assertRaises(error, parse_args, args_string.split())

    def test_failures_when_required(self):
        parse_args = self.get_parser(required=True).parse_args
        error = ArgumentParserError
        for args_string in self.failures + ['']:
            with self.subTest(args=args_string):
                self.assertRaises(error, parse_args, args_string.split())

    def test_successes_when_not_required(self):
        parse_args = self.get_parser(required=False).parse_args