Running unit test by make <module>

Hi all,

I wonder what the reason of running some of the unit tests by calling
simple make on a module (e.g. make sd). I used to use simple make while
doing the intensive hacking of the code, when I don't need to run unit
tests at all. After I finished with the codewriting, I can run the unit
tests with make check or a top level make. I guess there is some additional
option with which I can avoid unit tests, but I would not waste my time
with typing.
So I wonder whether there is any good reason for having this unit tests run
by make. Why don't we run tests only by make check? Nowdays most of the
patches are pushed via gerrit, so we don't need to worry about that the
commiter don't run the unit tests before pushing to the branch. So I think
it might be good to remove this type of unit tests and run these tests as
slow check targets. At least a config option would be usefull, which can do
that.

Any thoughts about this?

Best Regards,
Tamás