'This test makes sure that a second call to wait()
clears the first timeout.'

def test_subsequent_wait_calls(self):

    self.io_loop.add_timeout((self.io_loop.time() + 0.0), self.stop)
    self.wait(timeout=0.02)
    self.io_loop.add_timeout((self.io_loop.time() + 0.03), self.stop)
    self.wait(timeout=0.15)
