Documentation: kunit: add tips for using current->kunit_test
As of commit 359a3760 ("kunit: support failure from dynamic analysis tools"), we can use current->kunit_test to find the current kunit test. Mention this in tips.rst and give an example of how this can be used in conjunction with `test->priv` to pass around state and specifically implement something like mocking. There's a lot more we could go into on that topic, but given that example is already longer than every other "tip" on this page, we just point to the API docs and leave filling in the blanks as an exercise to the reader. Also give an example of kunit_fail_current_test(). Signed-off-by:Daniel Latypov <dlatypov@google.com> Reviewed-by:
Brendan Higgins <brendanhiggins@google.com> Signed-off-by:
Shuah Khan <skhan@linuxfoundation.org>
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