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test_timer.py
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test_timer.py
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import time
from unittest import TestCase
from metrology.instruments.timer import Timer, UtilizationTimer
class TimerTest(TestCase):
def setUp(self):
self.timer = Timer()
def tearDown(self):
self.timer.stop()
def test_timer(self):
for i in range(3):
with self.timer:
time.sleep(0.1)
self.assertAlmostEqual(300, self.timer.total_time, delta=20)
self.assertAlmostEqual(100, self.timer.mean, delta=10)
self.assertAlmostEqual(100, self.timer.snapshot.median, delta=10)
def test_timer_decorator(self):
@self.timer
def _test_decorator():
time.sleep(0.075)
self.timer.clear()
for i in range(3):
_test_decorator()
self.assertAlmostEqual(75, self.timer.mean, delta=10)
self.assertAlmostEqual(75, self.timer.snapshot.median, delta=10)
def test_timer_decorator_return_value(self):
expected_return_value = 'timer'
@self.timer
def _test_decorator_return_value():
return expected_return_value
self.assertEqual(expected_return_value, _test_decorator_return_value())
def test_timer_context_manager(self):
for i in range(3):
with self.timer:
time.sleep(0.035)
self.assertAlmostEqual(35, self.timer.mean, delta=10)
self.assertAlmostEqual(35, self.timer.snapshot.median, delta=10)
class UtilizationTimerTest(TestCase):
def setUp(self):
self.timer = UtilizationTimer()
def tearDown(self):
self.timer.stop()
def test_timer(self):
for i in range(5):
self.timer.update(100)
self.timer.update(150)
self.timer.meter.tick()
self.timer.duration_meter.tick()
self.assertAlmostEqual(250, self.timer.one_minute_utilization,
delta=10)