[Octave-bug-tracker] [bug #53254] tests: several unit tests set a random "seed" or "state" without restoring it

[Mike Miller]

Update of bug #53254 (project octave):

                  Status:               Confirmed => In Progress            
             Assigned to:                    None => mtmiller               
                 Release:                     dev => 4.2.1                  

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Follow-up Comment #3:

I have a partial fix for the problems in conv2.cc, eigs.m, and median.m.

For conv2.cc, unfortunately, I have to use unwind_protect because it needs to
restore both "seed" and "state" in the correct order. The fact that I can't
get the test to pass at all by trying to switch it to rand('state', ...)
probably means that the test is extremely fragile and should probably be
rewritten anyway. I'm adding a FIXME describing that for later.

I am now looking at rand.cc, which exhaustively checks all the rand* functions
(as it should), and returns with every random generator in a fixed state.

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