def test_integer_value_is_returned(self):
"""
oddball_sum will fail if the return type is not an integer.
"""
result = main.oddball_sum([1,2,3])
self.assertIsInstance(result, int)
def test_known_result(self):
"""
oddball_sum will always pass with a working list
"""
known_result = main.oddball_sum([1,2,3,4,5])
self.assertEqual(known_result, 9)