Comments on: TDD and random numbers in ruby http://silkandspinach.net/2008/02/01/tdd-and-random-numbers-in-ruby/ development, by example Tue, 07 Feb 2012 05:40:29 +0000 hourly 1 http://wordpress.com/ By: Chris Lloyd http://silkandspinach.net/2008/02/01/tdd-and-random-numbers-in-ruby/#comment-15140 Mon, 15 Sep 2008 00:26:57 +0000 http://silkandspinach.net/?p=804#comment-15140 http://chrislloyd.com.au/posts/mocking-rand

If you want to go along with the overriding Kernel#rand then have a peek at my solution. Use with caution.

]]> By: Chris Lloyd http://silkandspinach.net/2008/02/01/tdd-and-random-numbers-in-ruby/#comment-15113 Fri, 05 Sep 2008 00:30:26 +0000 http://silkandspinach.net/?p=804#comment-15113 I came across this recently, and a quick and dirty way of doing this is just to repeat the assertion a set amount of times. ie.

500.times do |i|
rand.should_not == 2
end

Simplistic example. It’s not flawless, if you are testing the actual values you have a small chance of getting a test failure, but without going too crazy it works alright.

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