[TIP] testing __init__
David Stanek
dstanek at dstanek.com
Fri Apr 9 18:06:11 PDT 2010
On Fri, Apr 9, 2010 at 8:54 PM, Alfredo Deza <alfredodeza at gmail.com> wrote:
> Hi
> I am having issues testing the constructor of a class that has a try/except
> block.
> Should __init__ raise an exception so I can catch via self.assertRaises to
> make it easier to test? Or are there other ways
> to make __init__ "testable"?
> What is the way you guys use the most (or like the best) for testing
> __init__?
>
>
Do you have a code snippet?
If I understand you correctly I'd write at least two tests. Something like:
@raises(SomeException)
def test_an_error_is_thrown():
# setup some mock stuff to make the __init__ raise an exception
ClassUnderTest(some mocks or something)
def test_good_behavior():
# setup some mock stuff in a good way
x = ClassUnderTest(some mocks or something)
# assert some behavior
--
David
blog: http://www.traceback.org
twitter: http://twitter.com/dstanek
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