unittest behaving oddly

[David Vincent]

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Hello


I'm hoping to get some insight into a situation that seems odd to me.  
My Python experience is limited;  I've just started using the unittest 
module.  I've had some experience with unit test support in other 
languages.

Two computers that I use are similarly configured; each has Python 2.3 
installed as distributed with the operating system, as far as I can 
tell.  The operating system is Mac OS X 10.3.9 in each case.  The 
hardware differs; they are both PowerPC computers.  On these machines 
unittest is behaving oddly, both in the same way.

If I copy the example from the unittest documentation and feed it to 
Python, I get errors about methods in unittest.  I think the example is 
intended to pass its tests, but on my machines the code in the example 
is not locating methods from unittest properly.

I've done some simple things, like inspecting the unittest code in the 
library; it seems to make sense.  For instance, the 'assertEquals' 
method is defined as a member of TestCase.

What could be going wrong?  I wonder if I should try to track down 
problems in the example, or in the Python library installation on these 
machines, or somewhere else.

Below is a transcript illustrating the problem.


Regards

David


PS: transcript illustrating the problem

> Mina:~/Documents/source/unittest-debug dvincent$ cat example.py
> # unittest example from documentation
>
> import unittest
>
> class IntegerArithmenticTestCase(unittest.TestCase):
>     def testAdd(self):  ## test method names begin 'test*'
>         assertEquals((1 + 2), 3)
>         assertEquals(0 + 1, 1)
>     def testMultiply(self):
>         assertEquals((0 * 10), 0)
>         assertEquals((5 * 8), 40)
>
> if __name__ == '__main__':
>     unittest.main()
>
> Mina:~/Documents/source/unittest-debug dvincent$ python example.py
> EE
> ======================================================================
> ERROR: testAdd (__main__.IntegerArithmenticTestCase)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File "example.py", line 7, in testAdd
>     assertEquals((1 + 2), 3)
> NameError: global name 'assertEquals' is not defined
>
> ======================================================================
> ERROR: testMultiply (__main__.IntegerArithmenticTestCase)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File "example.py", line 10, in testMultiply
>     assertEquals((0 * 10), 0)
> NameError: global name 'assertEquals' is not defined
>
> ----------------------------------------------------------------------
> Ran 2 tests in 0.045s
>
> FAILED (errors=2)
> Mina:~/Documents/source/unittest-debug dvincent$ python -V
> Python 2.3
> Mina:~/Documents/source/unittest-debug dvincent$



- -- 

David A Vincent                          dvincent at toshiba-tap.com
Software Engineer                       telephone +61 2 9850-2593
RESEARCH AND DEVELOPMENT         TOSHIBA (AUSTRALIA) PTY. LIMITED
"The situation is hopeless, we must take the next step." P.Casals
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