On Monday 20 December 2004 21:16, Christian Meesters wrote:
> Hi
>
> I've written some unittests using the unittest module for my
> 'DNA-class'. This class can cope with almost every input, but with no
> 'numbers' whatsoever. Well, one of the tests is:
>
> class TestFunctions(unittest.TestCase):
> ...
> def test__init__(self):
> """testing whether __init__ will fail if nonsense data are
> passed for initialization"""
> self.failUnlessRaises(IOError,DNA('1 ATG'))
Apart from the correct answer given by Kent Johnson, I personally prefer to
code such tests like this:
def test_stuff(self):
try:
my_function("silly argument")
self.fail("my_function succeeded, even though I passed silly
argument")
except IOError:
# and this was expected
pass
The reason for this is easy: I always make stupid mistakes in calls to
failUnlessRaises; and I find this approach much more readable.
I hope this helps,
Yigal Duppen
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