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

process_is_foreground do
  with_feature :readline do
    require 'readline'

    describe "Readline::HISTORY.<<" do
      it "appends the given Object to the history" do
        Readline::HISTORY << "1"
        Readline::HISTORY.size.should == 1

        Readline::HISTORY << "2"
        Readline::HISTORY.size.should == 2

        Readline::HISTORY.pop.should == "2"
        Readline::HISTORY.pop.should == "1"
      end

      it "tries to convert the passed Object to a String using #to_str" do
        obj = mock("Converted to String")
        obj.should_receive(:to_str).and_return("converted")

        Readline::HISTORY << obj
        Readline::HISTORY.pop.should == "converted"
      end

      it "raises a TypeError when the passed Object can't be converted to a String" do
        lambda { Readline::HISTORY << mock("Object") }.should raise_error(TypeError)
      end
    end
  end
end