def test_mean_rate_one_per_second(self, time_mock):
time_mock.return_value = 0.0
self.meter = Meter("test")
for i in xrange(10):
self.meter.mark()
time_mock.return_value += 1
self.meter._tick()
self.assertAlmostEqual(self.meter.get_mean_rate(), 1)
def meter(self, key):
"""
Gets a meter based on a key, creates a new one if it does not exist.
@param key: name of the metric
@type key: C{str}
@return: L{Meter}
"""
if key not in self._meters:
self._meters[key] = Meter()
return self._meters[key]
def test_meter_EWMA_rates(self, time_mock):
time_mock.return_value = 0.0
self.meter = Meter("test")
self.meter.mark(3)
time_mock.return_value += 5
for one, five, fifteen in [(0.6, 0.6, 0.6),
(0.22072766, 0.49123845, 0.56130419),
(0.08120117, 0.40219203, 0.52510399),
(0.02987224, 0.32928698, 0.49123845),
(0.01098938, 0.26959738, 0.45955700),
(0.00404277, 0.22072766, 0.42991879),
(0.00148725, 0.18071653, 0.40219203),
(0.00054713, 0.14795818, 0.37625345),
(0.00020128, 0.12113791, 0.35198773),
(0.00007405, 0.09917933, 0.32928698)]:
self.assertAlmostEqual(self.meter.get_one_minute_rate(), one)
self.assertAlmostEqual(self.meter.get_five_minute_rate(), five)
self.assertAlmostEqual(self.meter.get_fifteen_minute_rate(),
fifteen)
time_mock.return_value += 60
def __init__(self):
"""
Creates a new L{Timer} instance.
"""
self.histogram = Histogram.get_biased()
self.meter = Meter("calls")
def test_meter_with_three_events(self):
self.meter = Meter("test")
self.meter.mark(3)
self.assertEqual(self.meter.get_count(), 3)
def test_a_blankmeter(self):
self.meter = Meter("test")
self.assertEqual(self.meter.get_count(), 0)
self.assertAlmostEqual(self.meter.get_mean_rate(), 0.0)