Method test_mutex_groups_parents

Lib/test/test_argparse.py:3305–3332

(self)

        self.assertRaises(TypeError, ErrorRaisingArgumentParser, parents=[1])

    def test_mutex_groups_parents(self):
        parent = ErrorRaisingArgumentParser(add_help=False)
        g = parent.add_argument_group(title='g', description='gd')
        g.add_argument('-w')
        g.add_argument('-x')
        m = g.add_mutually_exclusive_group()
        m.add_argument('-y')
        m.add_argument('-z')
        parser = ErrorRaisingArgumentParser(prog='PROG', parents=[parent])

        self.assertRaises(ArgumentParserError, parser.parse_args,
            ['-y', 'Y', '-z', 'Z'])

        parser_help = parser.format_help()
        self.assertEqual(parser_help, textwrap.dedent('''\
            usage: PROG [-h] [-w W] [-x X] [-y Y | -z Z]

            options:
              -h, --help  show this help message and exit

            g:
              gd

              -w W
              -x X
              -y Y
              -z Z
        '''))

# ==============================
# Mutually exclusive group tests