[v5 1/3] evr: Add tests

[Fabian Maurer]

> I don't think it's useful to have a test that doesn't test anything. You
> should mark the tests as todo but still run them. If that's not
> possible, it should wait until we have something to test.

Yes, currently the tests give errors when run on wine. Policy is that we don't 
add a test that fails, correct? Is it okay to add a test that fails inside the 
todo block? Because that's counted as failure for some reason.

Regards,
Fabian Maurer