Method test_help

Lib/test/test_argparse.py:3246–3264

(self)

        raises(ValueError, add_argument, 'bar', nargs=argparse.PARSER)

    def test_help(self):
        parser = ErrorRaisingArgumentParser(prog='PROG')
        group1 = parser.add_mutually_exclusive_group()
        group1.add_argument('--foo', action='store_true')
        group1.add_argument('--bar', action='store_false')
        group2 = parser.add_mutually_exclusive_group()
        group2.add_argument('--soup', action='store_true')
        group2.add_argument('--nuts', action='store_false')
        expected = '''\
            usage: PROG [-h] [--foo | --bar] [--soup | --nuts]

            options:
              -h, --help  show this help message and exit
              --foo
              --bar
              --soup
              --nuts
              '''
        self.assertEqual(parser.format_help(), textwrap.dedent(expected))

    def test_optional_order(self):
        parser = ErrorRaisingArgumentParser(prog='PROG')