Check whether test framework is installed

[jitseniesen]

so that we can give a good error message if it is not

[goanpeca]

@jitseniesen since the plan for 4.0 is to have a more language agnostic Spyder, do you think it is worth making this a generic unit test widget? plus the one with Python support?

[jitseniesen]

@jitseniesen since the plan for 4.0 is to have a more language agnostic Spyder, do you think it is worth making this a generic unit test widget?

Yes, at least at first thought. We'll have to see how it works out.

[jitseniesen]

Need also to check for other dependencies, e.g. lxml

[goanpeca]

Is the check like a safeguard in case someone uninstalled something by accident? cause the plugin installation should define the dependencies, no?

[jitseniesen]

Good point. I haven't really thought about installation because I have never distributed Python modules. Regarding lxml, I guess it is indeed a safeguard. But there are also the test frameworks themselves (py.test, nose, unittest, ...). I don't want the user to have to install all the frameworks, so the plugin should check which ones are installed and prevent the user from running one that is not installed.

[goanpeca]

Hmmm true, I can help on the packaging side ;-).

unittest comes with python, and nose is an extension to unitests, so I dont think it is a bad idea to install pytest and nose by default. I think it makes sense