def test_get_usage(self):
command = Command()
command.add_option("foo", Option("-o", String()))
self.assert_equal(command.get_usage(), u("[-h] [-o foo]"))
command.add_command("bar", Command())
self.assert_equal(command.get_usage(), u("[-h] [-o foo] {bar}"))
command.add_positional(String(metavar="baz"))
self.assert_equal(command.get_usage(), u("[-h] [-o foo] {bar} baz"))
