Steven D'Aprano added the comment: Yes. What does such an assertion actually mean?
Why would I write `self.assertNotRaises(ValueError, spam, arg)` rather than just call `spam(arg)`? The only difference is that assertNotRaises will treat one specific exception as a test failure rather than a error, but I don't think that's useful. spam(arg) presumably is supposed to return something, or do something, not merely "don't raise ValueError". Raising ValueError should be no different from raising any other exception: it's a error, not a failure. It makes sense to test for expected exceptions. I don't think it makes sense to test for exceptions that don't happen. Every single successful test of `spam(arg)` shows that ValueError is not raised, as well as every imaginable other exception. I don't think there is any need for an assert method to test for exceptions not being raised. ---------- nosy: +steven.daprano _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27176> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
