def test_sum(self):
"""This is an actual test
"""
expected = 9
# unittest.TestCase provides several assertion methods
self.assertEqual(expected, lib_to_test.sum(self.x, self.y),
"Sum results differ")
self.assertTrue(expected == lib_to_test.sum(self.x, self.y)) # Message is optional
self.assertGreaterEqual(lib_to_test.sum(self.x, self.y), self.x)
self.assertFalse(lib_to_test.sum(0, 0))
self.assertIsNotNone(lib_to_test.sum(0, 0))
def test_which_crashes(self):
"""This test will crash
"""
self.assertTrue(lib_to_test.sum())
