Ruby on rails 我试图为RyanBates编写CanCan的权限规范，但出现了错误“quot；未初始化的常量能力：：CanCan“；

我不认为这个问题解决了我的问题

根据CanCan的说法，测试

能力并不难。我按照以下步骤编写规范：

当我尝试以下命令时

bundle exec rspec spec/cancan/ability.rb 

我得到以下错误

/projects/ATS/app/models/ability.rb:2:in `<class:Ability>': uninitialized constant Ability::CanCan (NameError)
        from /home/shiva/projects/ATS/app/models/ability.rb:1:in `<top (required)>'
        from /home/shiva/projects/ATS/spec/cancan/ability.rb:3:in `<top (required)>'
from /home/shiva/.rvm/gems/ruby-2.1.1/gems/cancan-1.6.10/lib/cancan.rb:1:in `<top (required)>'
        from /home/shiva/projects/ATS/spec/rails_helper.rb:14:in `<top (required)>'
        from /home/shiva/projects/ATS/spec/cancan/ability.rb:1:in `<top (required)>'

和
models/ability.rb中的代码片段

require 'rails_helper'

RSpec.describe Ability, type: :model do
  subject(:ability) {Ability.new(user)}
  let(:user) {nil}
  context 'Logged in as CSA' do
    let(:org) {create(:organization)}
    let(:user) {create(:user, organization: org, role_ids: [Role::ROLE_CSA])}
    describe 'Not Permitted' do
      it 'to visit /admins' do
          it {is_expected.to be_able_to(:manage, Workflow.new)}
      end

    end
  end
end

class Ability
  include CanCan::Ability

  def initialize(user, url, admin_session_id, my_applicant_id)
    if user.present?
      user.roles[0].permissions_by_organization(user).each do |permission|
        case permission.subject_class

组件的版本详细信息

Rails 4.0.4
rspec核心（3.1.7）
rspec期望值（3.1.2）
rspec模拟（3.1.3）
rspec导轨（3.1.0）
rspec支持（3.1.2）
坎坎（1.6.10）
我的问题得到了答案

问题是
spec
文件的
filename
应该是

spec/cancan/ability\u spec.rb
但它是

spec/cancan/ability.rb

我应该调用

bundle exec rspec spec/cancan/ability\u spec.rb

require 'rails_helper'

RSpec.describe Ability, type: :model do
  subject(:ability) {Ability.new(user)}
  let(:user) {nil}
  context 'Logged in as CSA' do
    let(:org) {create(:organization)}
    let(:user) {create(:user, organization: org, role_ids: [Role::ROLE_CSA])}
    describe 'Not Permitted' do
      it 'to visit /admins' do
          it {is_expected.to be_able_to(:manage, Workflow.new)}
      end

    end
  end
end

class Ability
  include CanCan::Ability

  def initialize(user, url, admin_session_id, my_applicant_id)
    if user.present?
      user.roles[0].permissions_by_organization(user).each do |permission|
        case permission.subject_class

有关更多详细信息，请访问此链接
，您可能希望尝试Rails 4。这是CanCan的延续版本，因为它已经过时了。我本来会的，但我目前正在执行一个运行多年的项目，所以我不允许升级到CanCanCan。