gen_test.py 文件源码

def test_multi_performance(self):
        # Yielding a list used to have quadratic performance; make
        # sure a large list stays reasonable.  On my laptop a list of
        # 2000 used to take 1.8s, now it takes 0.12.
        start = time.time()
        yield [gen.Task(self.io_loop.add_callback) for i in range(2000)]
        end = time.time()
        self.assertLess(end - start, 1.0)