RSpec 和 Cancancan：所有阴性测试均失败

Question

谁能帮我理解为什么只有我的阴性（即 should_not）测试会失败？我所有的 should 测试都通过了，所以这让我觉得我有一些配置错误，虽然我不知道是什么。

ability.rb

# encoding: utf-8
#
class Ability
  include CanCan::Ability

  def initialize(user)
    @user = user || User.new
    if @user.administrator?
      administrator_abilities
    elsif @user.client?
      client_abilities
    elsif @user.guest?
      guest_abilities
    end
    can :read, :share
  end

  private

  def administrator_abilities
    can :manage, :all
    can [:index, :filter, :new, :create], :administration
  end

  def client_abilities
    cannot :manage, administrator_resources
    can :manage, [:account, :provider_auth, :user_auth]
    can :read, [Component, Cover, Introduction, Template]
    can :manage, client_made_resources, user_id: @user.id
  end

  def guest_abilities
    cannot :manage, client_made_resources
    cannot :manage, administrator_resources
    can :create, Expression
  end

  def client_made_resources
    [Authorisation, Document, Component,
     CustomArticle, EditedArticle, Invoice, Order, Photo]
  end

  def administrator_resources
    [Brand, Chart, Component, Cover, Expression, Introduction, Mode,
     Preference, Price, Template, User, UserNote]
  end
end

user_spec.rb

# encoding: utf-8
#
require 'spec_helper'
require 'cancan/matchers'
def client_made_resources
  [Authorisation, Document, Component, CustomArticle, EditedArticle, Invoice,
   Order, Photo]
end

def administrator_resources
  [Brand, Chart, Component, Cover, Expression, Introduction, Mode, Preference,
   Price, Template, User, UserNote]
end

RSpec.describe Ability do
  let(:user) { create(:user, state: 'guest') }
  subject    { Ability.new(user) }

  context 'guest' do
    client_made_resources.each do |r|
      it "should not be able to manage client's #{r}" do
        expect(subject).to_not be_able_to(:manage, r.new)
      end
    end

每个阴性测试都有这样的结果：

rspec ./spec/models/user_spec.rb:69 # Ability guest should not be able to manage client's Document

感谢您的帮助。

Answer 1

我不知道为什么，但我重构了我的测试，它们现在可以按预期工作。也许这会对某人有所帮助。

RSpec.describe User do
  describe 'Abilities' do
    context 'guest' do
      let(:user) { create(:user, state: 'guest') }
      (client_made_resources + administrator_resources).each do |r|
        it "cannot manage #{r}" do
          ability = Ability.new(user)
          assert ability.cannot?(:manage, r.new)
        end
      end

      it 'can read shares' do
        ability = Ability.new(user)
        assert ability.can?(:read, :share)
      end
...

RSpec 和 Cancancan：所有阴性测试均失败

RSpec and Cancancan: all negative tests failing

rspec

ruby-on-rails

cancan

ruby-on-rails-3

cancancan