使用Railscast＃53的自定义异常处理时，RSpec控制器规格错误地失败 [英] RSpec controller spec incorrectly failing when using custom exception handling from Railscast #53

问题描述

我有之前提到这个问题，并被指示到这个问题的答案适用于功能规格。

I had asked this question before and was directed to this question for an answer that worked with feature specs.

但是，我仍然遇到规范失败与ActiveRecord :: RecordNotFound错误时包括在控制器规格。例如，项目＃新建和项目＃创建操作应该需要一个：list_id param。 （我将使用一个嵌套的路由： lists /：list_id / items / new 。）如果没有：list_id 由于无法加载@list，因此引发了ActiveRecord :: RecordNotFound。 自定义异常处理会导致重定向到自定义错误＃404。但是，我有一个控制器规范：

However, I'm still running into the spec failing with an ActiveRecord::RecordNotFound error when including this in a controller spec. For example, the items#new and items#create actions should require a :list_id param. (I'd be using a nested route: lists/:list_id/items/new.) If no :list_id, an ActiveRecord::RecordNotFound is raised because it can't load @list. The custom exception handling causes a redirect to the custom errors#404. However, I have this in a controller spec:

# /spec/controllers/items_controller_spec.rb
describe "list_id param is missing" do
  { new: :get, create: :post }.each do |action, method|
    it "Redirects to the custom 404" do
      send(method, action)
      # need something here to test that it ultimately ends up at the custom 404 page.
    end
  end
end

# /config/environments/test.rb
config.consider_all_requests_local       = false
config.action_controller.perform_caching = false

在浏览器中，这正确地重定向到了404.但测试错误地失败：

In the browser this correctly redirects to a 404. However the test incorrectly fails:

 Failure/Error: send(method, action)
 ActiveRecord::RecordNotFound:
   Couldn't find List without an ID

正如我在上面链接的其他问题中提到的，功能规格工作正常，但是如何我得到这个工作与控制器规格？ （Rails 4 app）

As mentioned in the other questions I linked to above, feature specs work fine, but how can I get this work with controller specs? (Rails 4 app)

更新：某些控制器代码：

# /app/controllers/items_controller.rb
before_action :set_list, only: [:new, :create]

def new
  @item = @list.items.build
end

private

def set_list
  @list = current_user.lists.find(params[:list_id])
end

推荐答案

我没有实现你的做法（我不能确定它是否正确）。通常，您可以隔离每个案例的测试，即GET，POST请求。尝试一下，看看问题是否仍然存在？

controller spec is different though. I haven't implemented the way you are doing(which I can't tell whether it's correct or not). Normally you isolate the test for every single cases ie GET, POST requests. Try that and see if the problem still persist?

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