kynaland/PrimeFactorsKata — pull request #1 by ctrucza (2014-09-15 10:07:33+00:00)
Title: added test case for factors appearing multiple times (e.g. 4 = 2*2)

The problem asks for prime factors, not only a list of prime numbers which divide the number.
This means that if a factor appears multiple times, you have to return it multiple times. E.g. for 4 the result should be {2,2}, factors(9) == {3,3} etc.