error of redirect page (Controller Test)


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

please help

in browser the link is

  def create
    @user =[:user])
      redirect_to :action => "confirm"
      render "new"

Test file

  it "should save redirect to confirm" do
       post 'create'
       assigns[:user].should_not be_new_record
   response.should redirect_to('confirm')

        it "should not save redirect to new" do
       post 'create'
       assigns[:user].should be_new_record
  response.should render_template('new')


  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.