Method test_invalid_name

Lib/test/test_argparse.py:821–826

(self)

        self.assertIn("got an unexpected keyword argument 'const'", str(cm.exception))

    def test_invalid_name(self):
        parser = argparse.ArgumentParser()
        with self.assertRaises(ValueError) as cm:
            parser.add_argument('--no-foo', action=argparse.BooleanOptionalAction)
        self.assertEqual(str(cm.exception),
                         "invalid option name '--no-foo' for BooleanOptionalAction")

class TestBooleanOptionalActionSingleDash(ParserTestCase):
    """Tests BooleanOptionalAction with single dash"""