it "update action should render edit template when model is invalid" do
    <%= singular_name %> = Factory(:<%= singular_name %>)
    ActiveRecord::Errors.any_instance.stubs(:empty?).returns(false)
    put :update, :id => <%= singular_name %>
    response.should render_template(:edit)
  end
  
  it "update action should redirect when model is valid" do
    ActiveRecord::Errors.any_instance.stubs(:empty?).returns(true)
    put :update, :id => Factory(:<%= singular_name %>)
    response.should redirect_to(<%= item_path_for_spec('url') %>)
  end