控制器中的Rspec问题模拟模型

Question

我设置了一个控制器来处理omniauth 身份验证，这些身份验证被用于自定义构建的身份验证系统。我正在尝试测试如何处理身份验证的逻辑（例如：如果用户已经拥有/没有帐户，如果用户当前/未登录等）。因此，我有一个授权模型和一个授权控制器。创建授权的操作大致如下：

class AuthorizationsController < ApplicationController 

  def create  
    omniauth = request.env['omniauth.auth']
    authorization = Authorization.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])
    if authorization
      # Authorization already established, log in user
    elsif current_user
      # User is logged in but wants to add another omniauth authentication
    else
      # Create user and associate them with omniauth authentication
    end
  end

end

我正在尝试在 Rspec 中测试此逻辑，但遇到了问题。这是我在规范中使用的内容：

describe AuthorizationsController do
  render_views

  describe "POST 'create'" do

    describe "with an already existing authorization" do

      it "should log the user in" do
        @authmock = mock_model(Authorization)
        Authorization.should_receive(:find_by_provider_and_uid).and_return(@authmock)
        post :create, :provider => 'twitter'
        current_user?(@authmock.user).should == true
        response.should redirect_to(root_path)
      end
    end
  end
end

我的印象是，当进行赋值调用时，这应该将我的模拟授权模型 (@authmock) 分配给我的控制器中的局部变量授权，从而使“如果授权”返回 true。但是，每当我真正运行此规范时，我都会收到此错误：

Failures:

  1) AuthorizationsController POST 'create' with an already existing authorization should log the user in
     Failure/Error: post :create, :provider => 'twitter'
     NoMethodError:
       You have a nil object when you didn't expect it!
       You might have expected an instance of Array.
       The error occurred while evaluating nil.[]
     # ./app/controllers/authorizations_controller.rb:5:in `create'
     # ./spec/controllers/authorizations_controller_spec.rb:16:in `block (4 levels) in <top (required)>'

谁能告诉我我在这里做错了什么？

编辑：

由于提出了关于omniauth 的分配是否导致问题的问题，我注释掉了该行以查看会发生什么并得到以下错误：

  1) AuthorizationsController POST 'create' with an already existing authorization should log the user in
     Failure/Error: post :create, :provider => 'twitter'
     NameError:
       undefined local variable or method `omniauth' for #<AuthorizationsController:0xb41809c>
 # ./app/controllers/authorizations_controller.rb:5:in `create'
 # ./spec/controllers/authorizations_controller_spec.rb:16:in `block (4 levels) in <top (required)>'

这告诉我问题出在模拟或存根上，因为 find_by_provider_and_uid 函数仍在评估中，并且在测试运行时没有存根

Answer 1

你在指定

current_user?(@authmock.user).should == true

或

response.should redirect_to(root_path)

我认为不应该在这里测试第一个期望，因为你已经模拟了“如果授权”块，所以你应该指定接下来会发生什么！