ruby-on-rails - pundit rspec - 未初始化的常量 UserPolicy，为什么？

Question

寻求一些帮助，我对 Rspec 和 pundit 是个菜鸟，我正在按照一个示例来设置 pundit 并对其进行测试，但所有测试都失败了

NameError:
  uninitialized constant UserPolicy
# ./spec/policies/user_policy_spec.rb:1:in `<top (required)>'
No examples found.

需要一些帮助来找出原因，因为我不知道:(

使用:

• Rails 5.1.6
• RSpec 3.7
  • rspec-core 3.7.1
  • rspec-期望 3.7.0
  • rspec-mocks 3.7.0
  • rspec-rails 3.7.2
  • rspec-支持 3.7.1
• 专家1.1.0
• 设计4.4.3

config/initializers/pundit.rb

module PunditHelper
  extend ActiveSupport::Concern

  included do
    include Pundit
    rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized
  end

  private

  def user_not_authorized
    flash[:alert] = "Access denied."
    redirect_to (request.referrer || root_path)
  end

end

ApplicationController.send :include, PunditHelper

app/policies/user_policy.rb

class UserPolicy
  include ApplicationHelper

  attr_reader :current_user, :model

  def initialize(current_user, model)
    @current_user = current_user
    @user = model
  end

  def index?
    is_admin?(@current_user)
  end

  def show?
    is_admin?(@current_user) or @current_user == @user
  end

  def update?
    is_admin?(@current_user) or @current_user == @user 
  end

  def destroy?
    is_admin?(@current_user) or @current_user == @user
  end

end

spec/support/pundit.rb

require 'pundit/rspec'

spec/rails_helper.rb

require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
abort("The Rails environment is running in production mode!") if 
Rails.env.production?
require 'rspec/rails'
Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }
...

spec/policies/user_policy_spec.rb

describe UserPolicy do
  subject { UserPolicy }

  let (:current_user) { FactoryBot.build_stubbed :user }
  let (:other_user) { FactoryBot.build_stubbed :user }
  let (:admin) { FactoryBot.build_stubbed :user, :admin }

  permissions :index? do
    it "denies access if not an admin" do
      expect(user_policy).not_to permit(current_user)
    end
    it "allows access for an admin" do
      expect(user_policy).to permit(admin)
    end
  end

end

app/controllers/users_controller.rb

class UsersController < ApplicationController
  include Pundit
  before_action :authenticate_user!
  after_action :verify_authorized

  def index
    @users = User.all
    authorize User
  end
  ....

end

Answer 1

您的 user_policy_spec 文件中缺少“rails_helper”的 require 行

需要“rails_helper”