Ruby on rails 当在上下文中的第二个方法中使用时，designe:subject.current_user的RSpec为nil

我目前正在使用RSpec测试我的Rails 4应用程序，在测试时，我发现了一个奇怪的问题：subject.current_user在上下文中的第二个方法中为nil。代码段：

  describe 'GET #register_as_team:' do
    context 'user logged in but not admin:' do
      login_user
      it 'should redirect_to user_path if user is not student' do
        get :register_as_team, id: subject.current_user.id
        expect(response).to redirect_to(user_path(subject.current_user))
        expect(flash[:danger]).not_to be_nil
      end

      it 'should redirect_to student_path if user is a non-pending student' do
        student = FactoryGirl.create(:student, user: subject.current_user, is_pending: false)
        get :register_as_team, id: subject.current_user.id
        expect(response).to redirect_to(student_path(student))
      end
    end
  end

因此，当第一次使用

subject.current_user

时，它是正常的，我可以只获取已登录的用户，但在第二种方法中，它返回nil

对于背景信息，

login\u user

如下所示：

module ControllerMacros
  def login_user(user = nil)
    before(:each) do
      # @request.env["devise.mapping"] = Devise.mappings[:user]
      user ||= User.find_by(email: 'default_user@controller.spec')
      user ||= FactoryGirl.create(:user, email: 'default_user@controller.spec', uid: 'default_user.controller.spec')
      sign_in user
    end
  end
end

---

在一个示例中，

subject

只能是。
当您这样做时，

get:register\u as\u team，id:subject.current\u user.id

，您基本上已经解析了

subject

和

subject。下一行中未解析当前用户

试试这个：

  describe 'GET #register_as_team:' do
    context 'user logged in but not admin:' do
      login_user
      it 'should redirect_to user_path if user is not student' do
        user = subject.current_user
        get :register_as_team, id: user.id
        expect(response).to redirect_to(user_path(user))
        expect(flash[:danger]).not_to be_nil
      end

  it 'should redirect_to student_path if user is a non-pending student' do
    student = FactoryGirl.create(:student, user: subject.current_user, is_pending: false)
    user = subject.current_user
    get :register_as_team, id: user.id
    expect(response).to redirect_to(student_path(student))
  end
end