我在我的控制器规范中使用了这个：
controller.class.skip_before_action
具体来说，在这种情况下：
controller.class.skip_before_action：require_authorisation_to_view_materials
MaterialsController：
class MaterialsController < ApplicationController
before_action :set_material, only: [:show, :edit, :update, :destroy]
before_action :require_authorisation_to_view_materials, only: [:index, :show]
def require_authorisation_to_view_materials # For Materials Page
unless user_signed_in? && current_user.can_view_materials?
redirect_to root_path, alert: "You are not authorised to view the Materials page."
end
end
# GET /materials
# GET /materials.json
def index
@materials = Material.all
end
# GET /materials/1
# GET /materials/1.json
def show
end
# GET /materials/new
def new
@material = Material.new
end
# GET /materials/1/edit
def edit
end
# POST /materials
# POST /materials.json
def create
@material = Material.new(material_params)
respond_to do |format|
if @material.save
format.html { redirect_to materials_path, notice: 'Material was successfully created.' }
format.json { render :show, status: :created, location: @material }
else
format.html { render :new }
format.json { render json: @material.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /materials/1
# PATCH/PUT /materials/1.json
def update
respond_to do |format|
if @material.update(material_params)
format.html { redirect_to materials_path, notice: 'Material was successfully updated.' }
format.json { render :show, status: :ok, location: @material }
else
format.html { render :edit }
format.json { render json: @material.errors, status: :unprocessable_entity }
end
end
end
# DELETE /materials/1
# DELETE /materials/1.json
def destroy
@material.destroy
respond_to do |format|
format.html { redirect_to materials_url, notice: 'Material was successfully deleted.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_material
@material = Material.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def material_params
params.require(:material).permit(:title, :level, :description, :link)
end
end
完整的material_controller_spec：
require "rails_helper.rb"
describe MaterialsController do
before :each do
controller.class.skip_before_action :require_authorisation_to_view_materials
end
after :each do
controller.class.before_action :require_authorisation_to_view_materials
end
describe "GET #index" do
it "populates an array of materials (@materials)" do
material1, material2 = (FactoryGirl.create :material), (FactoryGirl.create :material)
get :index
expect(assigns(:materials)).to eq([material1, material2])
end
it "renders the index view" do
get :index
expect(response).to render_template :index
end
end
describe "GET #show" do
it "assigns the requested material to @material" do
material = FactoryGirl.create :material
get :show, id: material
expect(assigns(:material)).to eq(material)
end
it "renders the #show view" do
get :show, id: FactoryGirl.create(:material)
expect(response).to render_template :show
end
end
describe "POST #create" do
context "with VALID attributes" do
it "creates new material" do
expect {
post :create, material: FactoryGirl.attributes_for(:material)
}.to change(Material, :count).by(1)
end
it "redirects to the materials page" do
post :create, material: FactoryGirl.attributes_for(:material)
expect(response).to redirect_to :materials
end
end
context "with INvalid attributes" do
it "does not create new material" do
expect {
post :create, material: FactoryGirl.attributes_for(:invalid_material)
}.to_not change(Material, :count)
end
it "re-renders the #new method" do
post :create, material: FactoryGirl.attributes_for(:invalid_material)
expect(response).to render_template :new
end
end
end
describe "PUT #update" do
before :each do
@material = FactoryGirl.create :material, title: "Title", level: "B2", description: "blah blah", link: "Dropbox Link"
end
context "valid attributes" do
it "locates the requested @material" do
put :update, id: @material, material: FactoryGirl.attributes_for(:material)
expect(assigns :material).to eq @material
end
it "changes @material's attributes" do
put :update, id: @material,
material: FactoryGirl.attributes_for(:material, title: "Title", level: "A1", description: "blah blah", link: "Dropbox Link")
@material.reload
expect(@material.title).to eq("Title")
expect(@material.level).to eq("A1")
expect(@material.description).to eq("blah blah")
end
it "redirects to the materials page" do
put :update, id: @material, material: FactoryGirl.attributes_for(:material)
expect(response).to redirect_to :materials
end
end
context "invalid attributes" do
it "locates the requested @material" do
put :update, id: @material, material: FactoryGirl.attributes_for(:invalid_material)
expect(assigns :material).to eq @material
end
it "does not change @material's attributes" do
put :update, id: @material,
material: FactoryGirl.attributes_for(:material, title: nil, level: "B1", description: "description", link: "Dropbox Link")
@material.reload
expect(@material.title).to eq("Title")
expect(@material.level).to_not eq("B1")
expect(@material.description).to eq("blah blah")
end
it "re-renders the edit method" do
put :update, id: @material, material: FactoryGirl.attributes_for(:invalid_material)
expect(response).to render_template :edit
end
end
end
describe "DELETE destroy" do
before :each do
@material = FactoryGirl.create :material
end
it "deletes the material" do
expect{
delete :destroy, id: @material
}.to change(Material, :count).by(-1)
end
it "redirects to materials#index" do
delete :destroy, id: @material
expect(response).to redirect_to :materials
end
end
end
你能看到这个有什么问题吗？我其实不明白怎么回事 controller.class.skip_before_action：require_authorisation_to_view_materials 工作，我在使用它之前发生了一些奇怪的事情（但我不确定这是否应该受到指责）。有人可以解释一下这行是什么，以及我的
controller.class.before_action :require_authorisation_to_view_materials
实际上是否有在material_controller中“切换”before_action''的预期效果？我的规范代码看起来不错吗？
答案 0 :(得分：6)
在进行控制器规范和伪造登录时，我喜欢使用期望来取消授权。
即。在你的情况下：
require "rails_helper.rb"
describe MaterialsController do
before :each do
allow(controller).to receive(:require_authorisation_to_view_materials).and_return(true)
end
#..snip
end
甚至更好
require "rails_helper.rb"
describe MaterialsController do
before :each do
allow(controller).to receive(:current_user).and_return(FactoryGirl.create(:admin_user)
end
#..snip
end