require File.expand_path('../../../../spec_helper', __FILE__)
require 'prime'
describe "Integer.each_prime" do
it "is transferred to Prime.each" do
Prime.should_receive(:each).with(100).and_yield(2).and_yield(3).and_yield(5)
yielded = []
Integer.each_prime(100) do |prime|
yielded << prime
end
yielded.should == [2,3,5]
end
end