[RFC v4 08/17] kunit: test: add support for test abort

[Dan Carpenter]

On Thu, Feb 28, 2019 at 01:03:24AM -0800, Brendan Higgins wrote:
> you could do:
> 
> if (IS_ERR_OR_NULL(ptr)) {
>         KUNIT_FAIL(test, "ptr is an errno or null: %ld", ptr);
>         return;
> }

It's best to not mix error pointers and NULL but when we do mix them,
it means that NULL is a special kind of success.  Like we try to load
a feature and we get back:

    valid pointer <-- success
    null          <-- feature is disabled.  not an error.
    error pointer <-- feature is broken.  fail.

regards,
dan carpenter