Re: [PATCH] ext4: add .kunitconfig fragment to enable ext4-specific tests

On Tue, Feb 09, 2021 at 05:32:06PM -0800, Daniel Latypov wrote:

As of [1], we no longer want EXT4_KUNIT_TESTS and others to `select`
their deps. This means it can get harder to get all the right things
selected as we gain more tests w/ more deps over time.

This patch (and [2]) proposes we store kunitconfig fragments in-tree to
represent sets of tests. (N.B. right now we only have one ext4 test).

There's still a discussion to be had about how to have a hierarchy of
these files (e.g. if one wanted to test all of fs/, not just fs/ext4).

But this fragment would likely be a leaf node and isn't blocked on
deciding if we want `import` statements and the like.

Usage
=====

Before [2] (on its way to being merged):
  $ cp fs/ext4/.kunitconfig .kunit/
  $ ./tools/testing/kunit.py run

After [2]:
  $ ./tools/testing/kunit.py run --kunitconfig=fs/ext4/.kunitconfig

Thanks, applied, with one minor fixup.  The path to kunit.py is

./tools/testing/kunit/kunit.py

						- Ted