def testSamplesWraparound(self): NUM = sampling.HOST_STATS_AVERAGING_WINDOW + 1 samples = sampling.SampleWindow( sampling.HOST_STATS_AVERAGING_WINDOW) class FakeHostSample(object): counter = 0 def __repr__(self): return "FakeHostSample(id=%i)" % self.id def __init__(self, *args): self.id = FakeHostSample.counter FakeHostSample.counter += 1 with MonkeyPatchScope([(sampling, 'HostSample', FakeHostSample)]): hs = sampling.HostMonitor(samples=samples) for _ in range(NUM): hs() first, last, _ = samples.stats() self.assertEqual(first.id, FakeHostSample.counter - sampling.HOST_STATS_AVERAGING_WINDOW) self.assertEqual(last.id, FakeHostSample.counter - 1)
def test_last_error(self): win = sampling.SampleWindow(size=2) win.append(self._VALUES[0]) win.append(self._VALUES[1]) self.assertEqual(None, win.last(nth=3))
def test_second_last(self): win = sampling.SampleWindow(size=2) win.append(self._VALUES[0]) win.append(self._VALUES[1]) self.assertEqual(self._VALUES[0], win.last(nth=2))
def setUp(self): self._counter = itertools.count(0) self.win = sampling.SampleWindow( size=2, timefn=lambda: next(self._counter))
def test_last_error(self): win = sampling.SampleWindow(size=2) win.append(self._VALUES[0]) win.append(self._VALUES[1]) _, collected = win.last(nth=3) assert collected is None
def test_second_last(self): win = sampling.SampleWindow(size=2) win.append(self._VALUES[0]) win.append(self._VALUES[1]) _, collected = win.last(nth=2) assert self._VALUES[0] == collected
def test_window_size_bad_values(self, size): with pytest.raises(ValueError): sampling.SampleWindow(size)
def test_last(self): win = sampling.SampleWindow(size=2) win.append(self._VALUES[0]) win.append(self._VALUES[1]) _, collected = win.last() self.assertEqual(self._VALUES[1], collected)