How do you debug when a unittest.TestCase fails?
emin.shopper at gmail.com
Wed Jul 18 23:42:47 CEST 2007
Thanks for the reply, but neither of those work for me. I don't seem to have
the "trial" program installed. Where do you get it?
Also, when I use the try/catch block, I get the following error:
Traceback (most recent call last):
File "_test.py", line 10, in <module>
File "c:\python25\lib\pdb.py", line 1148, in pm
AttributeError: 'module' object has no attribute 'last_traceback'
On 7/18/07, Jean-Paul Calderone <exarkun at divmod.com> wrote:
> On Wed, 18 Jul 2007 16:40:46 -0400, "Emin.shopper Martinian.shopper" <
> emin.shopper at gmail.com> wrote:
> >Dear Experts,
> >How do you use pdb to debug when a TestCase object from the unittest
> >fails? Basically, I'd like to run my unit tests and invoke pdb.pm when
> >something fails.
> >I tried the following with now success:
> >Imagine that I have a module _test.py that looks like the following:
> >import unittest
> >class MyTest(unittest.TestCase):
> > def testIt(self):
> > raise Exception('boom')
> >if __name__ == '__main__':
> > unittest.main()
> >If I do
> >>>>import _test; _test.unittest()
> >no tests get run.
> >If I try
> >>>>import _test; t = _test.MyTest()
> >I get
> >Traceback (most recent call last):
> > File "<stdin>", line 1, in <module>
> > File "c:\python25\lib\unittest.py", line 209, in __init__
> > (self.__class__, methodName)
> >ValueError: no such test method in <class '_test.MyTest'>: runTest
> >If I try
> >>>>import _test; t = _test.MyTest(methodName='testIt'); t.run()
> >nothing happens.
> I use `trial -b <filename>', which automatically enables a bunch of nice
> debugging functionality. ;) However, you can try this, if you're not
> interested in using a highly featureful test runner:
> import pdb
> This will "post-mortem" the exception, a commonly useful debugging
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