def test_stopwatch_loop(self):
HEADING()
cumulate = False
dt = 0.1
n = 10
for i in range(0, n):
StopWatch.start("stopwatch loop")
time.sleep(dt)
StopWatch.stop("stopwatch loop")
StopWatch.status("stopwatch loop", True)
t = StopWatch.get("stopwatch loop")
print(t)
assert t >= dt
t = StopWatch.sum("stopwatch loop", digits=4)
print(t)
assert t >= n * dt
