def test_reverseComparator(self):
reverse35 = ReverseComparator(35)
reverse36 = ReverseComparator(36)
self.assertEqual(reverse35, reverse35)
self.assertNotEqual(reverse35, reverse36)
self.assertLess(reverse36, reverse35)
self.assertGreater(reverse35, reverse36)
self.assertLess(reverse36, reverse35)
def test_reverseComparisonWithNone(self):
noneInList = ["z", None, None, "q", "a", None, "v"]
sortedList = sorted(noneInList,
key=lambda x: ReverseComparator(NoneComparator(x)))
self.assertEqual(sortedList, ["z", "v", "q", "a", None, None, None])
def test_reverseComparison(self):
nums = [1, 2, 3, 4, 5]
nums.sort(key=lambda x: ReverseComparator(x))
self.assertEqual(nums, [5, 4, 3, 2, 1])