File: next_spec.rb

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require File.expand_path('../../../../spec_helper', __FILE__)
require 'mathn'

describe "Prime#next" do
  it "returns the element at the current position and moves forward" do
    p = Prime.new
    p.next.should == 2
    p.next.should == 3
    p.next.next.should == 6
  end
end