Example of how to handle an exception

[jruere]

Hi! I couldn't find an example on how to handle an exception.

Is it already somewhere?

[mdwhatcott]

@jruere - It's been a while since I've worked on this project. Can you paste in an example of what you're trying to accomplish?

[jruere]

def do(a):
    return 1 / a

Test that for a = 0, an exception is raised.

[mdwhatcott]

You can assert that an assertion was raised:

this(function_that_raises_exception).should.raise_an(Exception)

https://github.com/mdwhatcott/pyspecs/blob/master/tests/test_should.py#L108

Conversely, you should be able to chain .NOT to get the inverse effect:

this(function_that_finishes_successfully).should.NOT.raise_an(Exception)

https://github.com/mdwhatcott/pyspecs/blob/master/tests/test_should.py#L20

[jruere]

And how to I pass arguments? Should I use a lambda?

You have not worked lately on the project because you are using something else?

[mdwhatcott]

Yes, if the function receives arguments, wrap it in a lambda or a separate niladic function.

I'm not doing very much python work right now, other than quick scripts that don't stick around long. I'm doing a lot more in Go (I also created GoConvey, also a testing tool, but with a lot more going on). Honestly, if I was doing serious python work (in python 3+) I would probably use Contexts--it's basically what I was trying to come up with in the beginning, but he did a better job :)

[jruere]

Thanks for the answer.

Context is nice but it has a few things I dislike:

1. it is really magical: method names, "triangulation". Makes me uneasy.
2. I cannot see how to nest contexts. It appears to be one level only.
3. 1 "test" per class.
4. it doesn't use/integrate with an existing testing framework

PyVows is good although rather verbose and uses gevent for some reason...

I'll stick with pyspecs for a while longer. Thanks for this!

[mdwhatcott]

You're welcome. Glad you are finding this project useful.