'If the wrapped effect succeeds at first, no delay or retry is done and
the retry effect\'s result is the wrapped effect\'s result.'

def test_immediate_success(self):

    effect = Effect(Constant(1000))
    retrier = retry_effect_with_timeout(effect, 10, time=self.get_time())
    result = perform_sequence([], retrier)
    self.assertEqual(result, 1000)
