def test_algorithm_with_tuple(self):
test_logger.debug("VarianceTest - test_algorithm_with_tuple Starts")
variance = Variance()
data_list = [("a", 1), ("b", 2), ("c", 3), ( "d", 4), ("e", 5)]
self.assertEquals(2.5, variance.calculate(data_list, is_tuple=True, index=1))
data_list = [("a", "a", 1), ("b", "b", 2), ("c", "c", 3), ("d", "d", 4), ("e", "e", 5)]
self.assertEquals(2.5, variance.calculate(data_list, is_tuple=True, index=2))
data_list = [("a", "a", 1), ("b", "b", 2), ("c", "c", 3), ("d", "d", 4)]
self.assertEquals(1.6667, variance.calculate(data_list, is_tuple=True, index=2))
test_logger.debug("VarianceTest - test_algorithm_with_tuple Ends")
def test_algorithm_with_list(self):
test_logger.debug("VarianceTest - test_algorithm_with_list Starts")
variance = Variance()
data_list = [1, 2, 3, 4, 5]
self.assertEquals(2.5, variance.calculate(data_list))
data_list = [1, 2, 3, 4]
self.assertEquals(1.6667, variance.calculate(data_list))
data_list = []
with self.assertRaises(ZeroDivisionError) as context:
variance.calculate(data_list)
self.assertEqual("integer division or modulo by zero",
context.exception.message)
test_logger.debug("VarianceTest - test_algorithm_with_list Ends")
def __algorithm(self):
variance = Variance()
return round(math.pow(variance.calculate(self._data), 0.5), 4)
