KernelTests doesn't play well with py.test tests discovery

[kmike]

py.test runs all unittest.TestCase subclasses found, so if you write

class MyKernelTests(KernelTests):
    # ....

then both tests for your kernel and tests defined in a base class are executed; as base class is not set up half of tests fail.

I'm using this trick to fix it:

# hack to avoid running base KernelTests
class Base(object):
    from jupyter_kernel_test import KernelTests


class MyKernelTest(Base.KernelTests):
    # ...

Do you think there is a better solution? If not, maybe it worths documenting?

[kmike]

Ouch, the example in README works, sorry for noise :)
The trick is not to import KernelTests directly, but use jupyter_kernel_test.KernelTests.

[martinRenou]

Actually I think this issue should be addressed. It's a backward incompatible change, but not too difficult to fix.

[takluyver]

We can do it without incompatibility; just have an alias for the old name.