fails:Kernel.srand is a private method
fails:Kernel.srand returns the previous seed value
fails:Kernel.srand seeds the RNG correctly and repeatably
fails:Kernel.srand defaults number to a random value
fails:Kernel.srand accepts and uses a seed of 0
fails:Kernel.srand accepts a negative seed
fails:Kernel.srand accepts a Bignum as a seed
fails:Kernel.srand calls #to_int on seed
fails:Kernel.srand raises a TypeError when passed nil
fails:Kernel.srand raises a TypeError when passed a String
