Re: [LTP] Design question around ltp-list

[chrubis@suse.cz]

Hi!
> I'd like to create a time-boxed test case, i.e. the test will run for
> a certain amount of time and if nothing goes wrong during this time,
> the test passed.
>
> This would also need to be recursive. So when starting my test, it in
> turn will start some test cases to be used as a system load. These
> loads are simple application that will run until killed. My intention
> was to start them using ltp-pan.
>
> So imagine my test case is started with ltp-pan, where a running time
> has been specified. My test case in turn will use ltp-pan to start an
> application that only exits when killed. What will happen when the
> first ltp-pan invocation times out? Will it automatically kill child
> ltp-pan instances, and they in turn kill the load applications?
>
> Or how are you supposed to do such a test case?

LTP testcases are self-contained and does not depend on any test driver
(i.e. ltp-pan). Moreover ltp-pan may be replaced with a better test
driver in the future.

If you need a background load while your test is running you should fork
a child process from the test itself and do the load from the child. The
test is also responsible for cleaning up later.

All that you need to start a LTP test should be executing the binary
(you may need to modify $PATH, set $LTP_DEV etc. but that should be
all). Also note that these are allready set if you are in the middle of
LTP testcase execution.

Also note that you can start a LTP testcase just by doing exec() with
right testname from another testcase (becase all of the test binaries
are in $PATH).

-- 
Cyril Hrubis
chrubis@suse.cz

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