def testFindStep_NotSteppishExample(self):
self.assertIsNone(find_step.FindStep(_NOT_STEPPISH))
y_values = [y for _, y in _NOT_STEPPISH]
self.assertEqual(15, find_step._MinimizeDistanceFromStep(y_values))
self.assertAlmostEqual(
67.44240311, find_step._DistanceFromStep(y_values, 15))
self.assertAlmostEqual(
0.53773162, find_step._RegressionSizeScore(y_values, 15))
def testFindStep_QuiteSteppishExample(self):
self.assertEqual(304772, find_step.FindStep(_QUITE_STEPPISH))
y_values = [y for _, y in _QUITE_STEPPISH]
self.assertEqual(21, find_step._MinimizeDistanceFromStep(y_values))
self.assertAlmostEqual(
4863.05166991, find_step._DistanceFromStep(y_values, 21))
self.assertAlmostEqual(
5.55211054, find_step._RegressionSizeScore(y_values, 21))
def testFindStep_LengthOneList_ReturnsNone(self): self.assertIsNone(find_step.FindStep([(1, 1.0)]))
def testFindStep_LengthTwoList_FindsStep(self): self.assertEqual(2, (find_step.FindStep([(1, 1.0), (2, 2.0)])))
def testFindStep_EmptyList_ReturnsNone(self): self.assertIsNone(find_step.FindStep([]))
