test_time.py 文件源码

def test_monotonic_settime(self):
        t1 = time.monotonic()
        realtime = time.clock_gettime(time.CLOCK_REALTIME)
        # jump backward with an offset of 1 hour
        try:
            time.clock_settime(time.CLOCK_REALTIME, realtime - 3600)
        except PermissionError as err:
            self.skipTest(err)
        t2 = time.monotonic()
        time.clock_settime(time.CLOCK_REALTIME, realtime)
        # monotonic must not be affected by system clock updates
        self.assertGreaterEqual(t2, t1)