def test_time_travel_forward(self):
orig_time = time.time()
travel_time = orig_time + 15
with timecop.travel(travel_time):
self.assertTrue( ( time.time() - travel_time ) <= 0.01 ) # pretty much the same time as we traveled to
self.assertTrue( ( time.time() - orig_time ) >= 10 ) # current time is before original/actual time
# time is reset to about where we were before (CPU cycles take "real" time to execute, so not exactly the same)
self.assertTrue( (time.time() - orig_time ) <= 0.01, str(locals()) )
def test_time_travel_backwards(self):
orig_time = time.time()
travel_time = orig_time - ( 60.0 * 60.0 )
with timecop.travel(travel_time):
time.sleep(0.6)
# even after sleeping we're still "behind" actual time
self.assertTrue( time.time() < orig_time )
# resets properly
self.assertTrue( time.time() > orig_time, locals() )
def test_time_does_not_stop_with_travel(self):
now = time.time()
with timecop.travel(now):
# NB: time.sleep() and time.time() resolution should be plenty to detect
# a sleep even of a few milliseconds but we're trading test run time for
# confidence that time is really frozen
sleep_secs = 0.6
time.sleep(sleep_secs)
self.assertNotEqual(now, time.time())
time_diff = time.time() - now
self.assertTrue( time_diff >= sleep_secs )