ruby_version_is '1.8.7' do
  describe "Array#cycle" do
    before :each do
      ScratchPad.record []

      @array = [1, 2, 3]
      @prc = lambda { |x| ScratchPad << x }
    end

    it "does not yield and returns nil when the array is empty" do
      [].cycle(6, &@prc).should be_nil
      ScratchPad.recorded.should == []
    end

    it "does not yield and returns nil when passed 0" do
      @array.cycle(0, &@prc).should be_nil
      ScratchPad.recorded.should == []
    end

    it "iterates the array 'count' times yielding each item to the block" do
      @array.cycle(2, &@prc)
      ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
    end

    it "iterates indefinitely when not passed a count" do
      @array.cycle do |x|
        ScratchPad << x
        break if ScratchPad.recorded.size > 7
      end
      ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3, 1, 2]
    end

    it "iterates indefinitely when passed nil" do
      @array.cycle(nil) do |x|
        ScratchPad << x
        break if ScratchPad.recorded.size > 7
      end
      ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3, 1, 2]
    end

    it "does not rescue StopIteration when not passed a count" do
      lambda do
        @array.cycle { raise StopIteration }
      end.should raise_error(StopIteration)
    end

    it "does not rescue StopIteration when passed a count" do
      lambda do
        @array.cycle(3) { raise StopIteration }
      end.should raise_error(StopIteration)
    end

    it "iterates the array Integer(count) times when passed a Float count" do
      @array.cycle(2.7, &@prc)
      ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
    end

    it "calls #to_int to convert count to an Integer" do
      count = mock("cycle count 2")
      count.should_receive(:to_int).and_return(2)

      @array.cycle(count, &@prc)
      ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
    end

    it "raises a TypeError if #to_int does not return an Integer" do
      count = mock("cycle count 2")
      count.should_receive(:to_int).and_return("2")

      lambda { @array.cycle(count, &@prc) }.should raise_error(TypeError)
    end

    it "raises a TypeError if passed a String" do
      lambda { @array.cycle("4") { } }.should raise_error(TypeError)
    end

    it "raises a TypeError if passed an Object" do
      lambda { @array.cycle(mock("cycle count")) { } }.should raise_error(TypeError)
    end

    it "raises a TypeError if passed true" do
      lambda { @array.cycle(true) { } }.should raise_error(TypeError)
    end

    it "raises a TypeError if passed false" do
      lambda { @array.cycle(false) { } }.should raise_error(TypeError)
    end
  end
end
