As some posters have already said, it depends what you are trying to test.
If you want to test what your solution does when it receives a
randomly-generated number, then you don't need to use random numbers. You can
hide the generation of the random number in a type which is defined by an
You could also capture a (p)random stream as a test data vector and use it
in lieu of the PRNG during tests. This is the same as seeding iff and only
iff the PRNG is never changed, Should that change, then so will the tests
unless you capture a test vector now. (For example, if you have a timing
