RSpec: String should be in array

Question

I am testing a random string generator that takes two arrays of words and then picks random ones from them. I need to be able to test that it actually is random. For instance:

FrostyMeadow.generate(:nouns => ["hello", "world"], :adjectives => ["hello","world"]

should generate one of the following strings:

["hello world", "world world", "world hello", "hello hello"]

Is there any way to give rspec that array and check if the generated string is in there?

See also stackoverflow.com/questions/7922346/… for some alternative answers. — dcorking
– dcorking, Commented Nov 19, 2015 at 10:00

Daniel Evans · Accepted Answer · 2013-02-28 20:58:45Z

5

Randomness is hard to test, but in your case you can achieve it this way:

word = FrostyMeadow.generate(:nouns => ["hello", "world"], :adjectives => ["hello","world"]
["hello world", "world world", "world hello", "hello hello"].should include(word)

answered Feb 28, 2013 at 20:58

Daniel Evans

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