[Ns-developers] Request for Merge -- Validation

[craigdo@ee.washington.edu]

Hi All,

Tom asked me to put together something that can be used to drive
non-trace-based regression tests and get it merged as soon as possible.
I've put together a change to regression.py that allows us to pass or fail
regression tests based on the return value of the test program.  I've added
versions of the random number generator validation tests that don't have any
code to generate pretty plots as a demonstration of how this might work.

The attached patch has:

1) Changes to regression.py to allow non-trace-based tests.  The files in
regression/tests work just like they used to, except if there's an attribute
called "trace_compare" in the test module.  In this case, it tells
regression.py to just look at the return code from the test program.  See
regression/tests/test-rng-exponential.py for an example.

2) There are four new .py files in regression/tests corresponding to the
tests for four of the rng distributions I socialized a while back.

3) There is a new valver (validation and verification) directory to hold
dedicated tests.

4) In the valver directory there is an rng directory in which you can find
four .cc files corresponding to the chi-square tests for the four
distributions.

N.B. The rng validation tests introduce a GSL dependency.

With this in place, we can begin to write validation and verification tests
that do not use the trace comparison function.

I'd like to merge this ASAP.

Regards,

-- Craig
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