[Python-Dev] Proposed unittest changes

[Michael Foord]

Raymond Hettinger wrote:
> From: "Ben Finney" <ben+python at benfinney.id.au>
>> Right, so I'm putting up a separate PEP just for the renaming. Should
>> be arriving on this list soon.
>
> I would like to work with you or someone else who is interested
> on an alternative PEP for a separate, simpler test module
> using the py.test syntax.  That is much simpler to learn and use.
> Instead of self.assertIsNot and whatnot, you write:
>   assert a is not b
> No need for tons of word-by-word spellings on things we already
> have syntax for.  Almost anyone who has used py.test can attest
> its syntax is much more natural, easy to learn, easy to both
> read and write, and is much lighter weight.  I think some variant
> of py.test could be done that is compatable with unittest
> and the did not have the "magic" present in earlier versions of py.test.

Ah, in my haste I skipped over your comment about "magic", my apologies. 
But in the absence of magic how do you propose to provide a meaningful 
error message from the failure of:

assert a == b

To wrap it in a function like "assert equals(a, b)" seems to gain little 
over unittest.

Michael

> I wrote a recipe (somewhat rough and incomplete) that shows how
> easily this could be done:
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/572194
>
> Raymond
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