Method test_prints_usage_with_invalid_flag

Lib/test/test_base64.py:1445–1448

(self)

        self.assertIn(b'-d, -u: decode', output)

    def test_prints_usage_with_invalid_flag(self):
        output = script_helper.assert_python_failure('-m', 'base64', '-x').err
        self.assertIn(b'usage: ', output)
        self.assertIn(b'-d, -u: decode', output)

if __name__ == '__main__':
    unittest.main()