Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

Some functions can return ERR_PTR(errval). Add a unit test macro to check
that no error is returned in a pointer.

Signed-off-by: Simon Glass <sjg@chromium.org>

The asserts are sometimes called from the context of the test command
itself so make sure that a return that happens as a result of a failure
is compatible with that command return. When called within a test, the
return value is ignored.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Separate the ability to define tests and assert status of test functions
from the dm tests so they can be used more consistently throughout all
tests.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>