it "create action should render new template when model is invalid" do
    ActiveRecord::Errors.any_instance.stubs(:empty?).returns(false)
    post :create
    response.should render_template(:new)
  end
  
  it "create action should redirect when model is valid" do
    ActiveRecord::Errors.any_instance.stubs(:empty?).returns(true)
    post :create
    response.should redirect_to(<%= item_path_for_spec('url') %>)
  end