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non-random number generation. PR: 100749 Submitted by: Jin-Shan Tseng <tjs at cdpa.nsysu.edu.tw>
21 lines
1.1 KiB
Plaintext
21 lines
1.1 KiB
Plaintext
This perhaps ridiculous-seeming module was created to test routines that
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manipulate random numbers by providing a known output from rand. Given a list of
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seeds with srand, it will return each in turn. After seeded random numbers are
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exhausted, it will always return 0. Seed numbers must be of a form that meets
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the expected output from rand as called with no arguments -- i.e. they must be
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between 0 (inclusive) and 1 (exclusive). In order to facilitate generating and
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testing a nearly-one number, this module exports the function oneish, which
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returns a number just fractionally less than one.
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Depending on how this module is called with use, it will export rand to a
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specified package (e.g. a class being tested) effectively overriding and
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intercepting calls in that package to the built-in rand. It can also override
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rand in the current package or even globally. In all of these cases, it also
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exports srand and oneish to the current package in order to control the output
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of rand.
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Alternatively, this module can be used to generate objects, with each object
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maintaining its own distinct seed array.
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WWW: http://search.cpan.org/dist/Test-MockRandom/
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