如何使用 RSpec 测试 ActionCable 频道? [英] How can I test ActionCable channels using RSpec?

问题描述

我想知道如何测试 ActionCable 频道.

I am wondering how to test ActionCable channels.

假设我有以下聊天频道:

Let's say I have the following chat channel:

class ChatChannel < ApplicationCable::Channel
  def subscribed
    current_user.increment!(:num_of_chats)

    stream_from "chat_#{params[:chat_id]}"
    stream_from "chat_stats_#{params[:chat_id]}"
  end
end

subscribed 方法更新数据库并定义两个跨频道广播的流，但细节不是很重要，因为我的问题是一个更一般的问题:

The subscribed method updates the db and defines two streams to be broadcasted across the channel, but the details are not very important since my question is a more general one:

• 如何设置测试来测试订阅所涉及的逻辑这个频道?

在测试控制器动作等类似交互时，RSpec 提供了许多辅助方法和各种实用程序，但我找不到有关 RSpec 和 ActionCable 的任何信息.

RSpec provides a lot of helper methods and various utilities when testing similar interactions like controller actions, but I couldn't find anything regarding RSpec and ActionCable.

推荐答案

您可能想要等待*https://github.com/rails/rails/pull/23211 合并.它添加了 ActionCable::TestCase.合并后，期待 rspec-rails 团队尽自己的一份力量:https://github.com/rspec/rspec-rails/issues/1606

You probably want to wait* for https://github.com/rails/rails/pull/23211 to be merged. It adds ActionCable::TestCase. Once that's merged, expect the rspec-rails team to do its part: https://github.com/rspec/rspec-rails/issues/1606

* 等待是可选的；您迫不及待地基于这个正在进行的工作"开展自己的工作，然后找到一个现在有效的解决方案.

* Waiting is optional; You can not wait and based your own work on this "work in progress" and find a solution that works right now.

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