ruby-on-rails - 在 Rspec 的 API Controller 测试模块中出现委托(delegate)错误

Question

我正在编写一个 Controller 规范来验证这个私有(private)方法，我收到错误 Module::DelegationError: ActionController::RackDelegation 但我不知道如何解决这个问题。我找到的最好的例子是 http://owowthathurts.blogspot.com/2013/08/rspec-response-delegation-error-fix.html .

如何让未验证规范通过？我想确保返回 401。

方法

def validate_api_request
  return four_oh_one unless api_request_verified?(request)
end

当前规范

describe Api::ApiController, type: :controller do
  describe '#validate_api_request' do
    it 'verified' do
      allow_any_instance_of(described_class).to receive(:api_request_verified?).and_return(true)
      expect(subject.send(:validate_api_request)).to be_nil
    end

    it 'unverified' do
      allow_any_instance_of(described_class).to receive(:api_request_verified?).and_return(false)
      allow(controller).to receive(:redirect_to)
      binding.pry
    end
  end
end

我正在使用 Rails 4。

Answer 1

如果有人正在处理编写 Controller 规范的类似问题，以下是我根据以下 2 个指南解决此问题的方法:http://codegur.com/22603728/test-user-authentication-with-rspec和 https://gayleforce.wordpress.com/2012/12/01/testing-rails-before_filter-method/ .

describe Api::ApiController, type: :controller do
  describe '#validate_api_request' do
    controller(Api::ApiController) do
      before_filter :validate_api_request
      def fake
        render text:  'TESTME'
      end
    end

    before do
      routes.draw { get 'fake', to: 'api/api#fake' }
    end

    it 'verified' do
      allow_any_instance_of(described_class).to receive(:api_request_verified?).and_return(true)
      expect(subject.send(:validate_api_request)).to be_nil
    end

    it 'unverified' do
      allow_any_instance_of(described_class).to receive(:api_request_verified?).and_return(false)
      get 'fake'
      expect(response.status).to be(401)
    end
  end
end