def testChangePoint_CanBeMadeAndConvertedToDict(self):
series = list(enumerate([4, 4, 4, 8, 8, 8, 8]))
change_point = find_change_points.MakeChangePoint(series, 3)
self.assertEqual(
find_change_points.ChangePoint(x_value=3,
median_before=4.0,
median_after=8.0,
size_before=3,
size_after=4,
window_start=0,
window_end=6,
relative_change=1.0,
std_dev_before=0.0,
t_statistic=float('inf'),
degrees_of_freedom=1.0,
p_value=0.001), change_point)
self.assertEqual(
{
'x_value': 3,
'median_before': 4.0,
'median_after': 8.0,
'size_before': 3,
'size_after': 4,
'window_start': 0,
'window_end': 6,
'relative_change': 1.0,
'std_dev_before': 0.0,
't_statistic': float('inf'),
'degrees_of_freedom': 1.0,
'p_value': 0.001,
}, change_point.AsDict())
def testRemoveKnownAnomalies_SomePriorAnomalies_ReturnsFilteredList(self):
test = self._MakeSampleTest()
test.last_alerted_revision = 3
series = [(i, i) for i in range(0, 6)]
change_points = [find_change_points.MakeChangePoint(series, i)
for i in [2, 3, 4]]
filtered = find_change_points_exp._RemoveKnownAnomalies(test, change_points)
# Only entries for after the last_alerted_revision are kept.
self.assertEqual(change_points[2:], filtered)
# The last_alerted_revision property of the TestMetadata is updated.
self.assertEqual(4, test.last_alerted_revision)
# The TestMetadata entity is never put().
self.assertIsNone(test.key.get())
