def test_same_entries(self):
list1 = find_missing([2], [2])
list2 = find_missing([4], [4])
list3 = find_missing([7], [7])
self.assertListEqual([0, 0, 0],
[list1, list2, list3],
msg='should return 0 for lists with the same entries')
def test_missing_entries(self):
list1 = find_missing([1, 2], [1, 2, 5])
list2 = find_missing([4, 6, 8], [4, 6, 8, 10])
list3 = find_missing([5, 4, 7, 6, 11, 66], [5, 4, 1, 7, 6, 11, 66])
self.assertListEqual([5, 10, 1],
[list1, list2, list3],
msg='should return the missing number for lists with similar entries and a missing number')
def test_empty_list(self):
self.assertEqual(0, find_missing([], []),
msg='should return 0 for empty list')