Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> wrote:
> (1) assertRaises REALLY needs a better error message. If not a custom
> message, at least it should show the result it got instead of an
> exception.
>
If a different exception was thrown then you get an error instead of a
failure and you are shown the Exception that was thrown, so I think you
only have an issue if no exception was thrown at all.
If so, here's an alternative way to write your test which might be easier
to debug:
def testBadArgType(self):
# Test failures with bad argument types.
for d in (None, 23, object(), "spam"):
with self.assertRaises(TypeError) as cm:
self.func(d)
print(d, "didn't throw the exception")
It is worth remembering that print output doesn't appear unless the test
fails, so you can leave the tracing statement in the test. Also,
assertRaises has a weird dual life as a context manager: I never knew that
before today.
--
Duncan Booth http://kupuguy.blogspot.com
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