See https://docs.python.org/2/library/unittest.html#unittest.TestCase.longMessage Allows showing the 42 != 69 : custom message instead of _only_ showing the custom message if one was specified.
See https://docs.python.org/2/library/unittest.html#unittest.TestCase.longMessage Allows showing the 42 != 69 : custom message instead of _only_ showing the custom message if one was specified.