error of redirect page (Controller Test)

Hi,

I have a trouble of testing controller with redirect to the confirm page I dont understand why i can pass the render the template new but not to redirect the confirm

please help

in browser the link is http://0.0.0.0:3000/register_confirm

  def create     @user = User.new(params[:user])     if @user.save       redirect_to :action => "confirm"     else       render "new"     end   end

Test file

  it "should save redirect to confirm" do        User.any_instance.stubs(:valid?).returns(true)        post 'create'        assigns[:user].should_not be_new_record    response.should redirect_to('confirm')     end

        it "should not save redirect to new" do        User.any_instance.stubs(:valid?).returns(false)        post 'create'        assigns[:user].should be_new_record   response.should render_template('new')     end

error

  1) UsersController GET create should save redirect to confirm      Failure/Error: response.should redirect_to('confirm')        Expected response to be a <:redirect>, but was <200>.        Expected block to return true value.