gistfile1.rb

      it 'should keep correct old stack' do
    #1
        redirect_pry_io(InputTester.new("cd @", "cd -", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.should == nil

    #2
        redirect_pry_io(InputTester.new("cd :mon_dogg", "cd @", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.eval("self").should == @o

    #3
        redirect_pry_io(InputTester.new("cd :mon_dogg", "cd @", "cd -", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.eval("self").should == :mon_dogg
      end
    end

# -------------------VERSUS-------------------

      it 'should keep correct old stack' do
        redirect_pry_io(InputTester.new("cd @", "cd -", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.should == nil

        redirect_pry_io(InputTester.new("cd :mon_dogg", "cd @", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.eval("self").should == @o

        redirect_pry_io(InputTester.new("cd :mon_dogg", "cd @", "cd -", @cs, "exit-all")) do
          Pry.start(@o)
        end
        Pad.cs.old_stack.eval("self").should == :mon_dogg
      end