test harness attempt

[Jon Frechette]

Wow
Thanks, I don't think I would have figured that out in million years.

emile at fenx.com wrote:
> 
> Jon,
> 
> I made a few tweaks, and got what appears to be what you're trying
> to do (see code below).
> 
> Your object.py module is known as main when it starts, which is why
> you couldn't reference it as object.
> 
> HTH,
> 
> Emile van Sebille
> emile at fenx.com
> 
> Jon Frechette <jonf at connix.com> wrote in message
> news:<391185E7.6CD5BC93 at connix.com>...
> > I am trying to figure out how to write a test harness for my class. I want pass a code string to a function that will print the string and then exec it. The function should be able to compare the
> > value of the statement against an expected value. I've have managed to get it half-way working but I can't seem to do an assignment in an 'exec' statement. Is there any way to do this ? Any help would
> > be greatly appreciated.
> >
> <sample snipped>
> 
> import sys
> 
> def nObjects():
>   return Object._nObjs
> 
> def _test():
>   print '\ntesting object'
>   _run( 'x = Object()' )
>   _run( 'y = Object()' )
>   _run( 'z = Object()' )
>   _run( 'nObjects()', 3 )
> 
> def _run( codeStr, test = None ):
>   if test == None:
>     print codeStr
>     exec codeStr in sys.modules[__name__].__dict__
>   else:
>     print codeStr,
>     exec '_x_ = ' + codeStr in sys.modules[__name__].__dict__
>     print '(expecting: ' + `test` + '  got: ' +
> `sys.modules[__name__].__dict__["_x_"]` + ')'
> 
> class Object:
> 
>   _nObjs = 0
> 
>   def __init__( self ):
>     Object._nObjs = Object._nObjs + 1
> 
> if __name__ == "__main__":
>   _test()