Rspec:测试救援块 [英] Rspec: Test rescue block

问题描述

我有一个这样的块:

begin
  response = Facebook.make_profile_request(params[:token])
rescue => e
  Airbrake.notify(
     :error_class => "Facebook Processing",
     :error_message => "Error: #{e.message}"
   )

  flash[:notice] = "Uh oh...something went wrong. Please try again."
  redirect_to root_path
end

这是我目前所拥有的:

it "should notify Airbrake if call to FB fails" do
  Facebook.stub(:make_profile_request).with(fb_token).and_raise(Exception)
  Airbrake.should_receive(:notify)
  get :facebook_process, token: fb_token
end

出现错误:

  1) UsersController GET facebook_process should notify Airbrake if call to FB fails
 Failure/Error: get :facebook_process, token: fb_token
 Exception:
   Exception
 # ./app/controllers/users_controller.rb:9:in `facebook_process'
 # ./spec/controllers/users_controller_spec.rb:41:in `block (3 levels) in <top (required)>'

我应该如何正确测试救援?

How should I properly test rescue?

推荐答案

你必须指定一个特定的异常类，否则 rspec 会在检测到异常时立即退出；但是，这是在不从 Exception 中解救出来的情况下如何做到这一点(如 Nick 的评论中指出的).

You have to specify a specific exception class, otherwise rspec will bail as soon as it detects the exception; but, here is how you can do it without rescuing from Exception (as pointed out in Nick's comment).

class MyCustomError < StandardError; end

begin
  response = Facebook.make_profile_request(params[:token])
rescue MyCustomError => e
  ...
end

并且在您的规范中，您应该让存根返回自定义错误类.像这样:

And in your spec, you should make the stub return the custom error class. Something like this:

Facebook.stub(:make_profile_request).with(fb_token).and_raise(MyCustomError)

这篇关于Rspec:测试救援块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！