def dCountingSort(x):
countingSort = CountingSort(x)
x = countingSort.sort()
def testCountingSort(self):
x = [-20,-45,995,912,126,1246,624]
countingSort = CountingSort(x)
x = countingSort.sort()
self.assertEqual(x,[-45.0, -20.0, 126, 624, 912, 995, 1246])
