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

process_is_foreground do
  with_feature :readline do
    require 'readline'

    describe "Readline::HISTORY.[]" do
      before(:each) do
        Readline::HISTORY.push("1", "2", "3")
      end

      after(:each) do
        Readline::HISTORY.pop
        Readline::HISTORY.pop
        Readline::HISTORY.pop
      end

      it "returns tainted objects" do
        Readline::HISTORY[0].tainted?.should be_true
        Readline::HISTORY[1].tainted?.should be_true
      end

      it "returns the history item at the passed index" do
        Readline::HISTORY[0].should == "1"
        Readline::HISTORY[1].should == "2"
        Readline::HISTORY[2].should == "3"

        Readline::HISTORY[-1].should == "3"
        Readline::HISTORY[-2].should == "2"
        Readline::HISTORY[-3].should == "1"
      end

      it "raises an IndexError when there is no item at the passed index" do
        lambda { Readline::HISTORY[-10] }.should raise_error(IndexError)
        lambda { Readline::HISTORY[-9] }.should raise_error(IndexError)
        lambda { Readline::HISTORY[-8] }.should raise_error(IndexError)

        lambda { Readline::HISTORY[8] }.should raise_error(IndexError)
        lambda { Readline::HISTORY[9] }.should raise_error(IndexError)
        lambda { Readline::HISTORY[10] }.should raise_error(IndexError)
      end
    end
  end
end