在 rspec rails 中测试 redirect_to :back答案

【问题标题】：testing for redirect_to :back in rspec rails在 rspec rails 中测试 redirect_to :back
【发布时间】：2016-07-18 00:55:24
【问题描述】：

我有控制器方法，它使用redirect_to :back 将用户重定向回原始页面。方法如下。

def create
     @conversation = Conversation.find(params[:conversation_id])
     @message = @conversation.messages.build(message_params)
      if @message.save
         undeletion_unread
         redirect_to :back
         flash[:success] = "Message Sent Successfully"
      else
        redirect_to :back
        flash[:danger] = 'Message must be between 1-600 characters'
      end
    end

我正在尝试为有效和无效的创建方法编写集成测试。下面给出了集成测试。

test "valid creation of a message" do 
      post user_conversation_messages_path(@user, @conversation), message: {body: "abc"}
      assert_equal "Message Sent Successfully", flash[:success]
  end

  test "invalid creation of a message" do 
      post user_conversation_messages_path(@user, @conversation), message: {body: "  "}
      assert_equal "Message must be 1-600 characters", flash[:success]
  end

我收到与redirect_to :back 相关的以下错误。

Error:
MessageCreateTest#test_invalid_creation_of_a_message:
ActionController::RedirectBackError: No HTTP_REFERER was set in the request to this action, so redirect_to :back could not be called successfully. If this is a test, make sure to specify request.env["HTTP_REFERER"].
    app/controllers/messages_controller.rb:14:in `create'
    test/integration/message_create_test.rb:16:in `block in <class:MessageCreateTest>'

我尝试在 create 方法中使用 HTTP REFERRER（如下所示）而不是 redirect_to :back，但我仍然收到错误。

redirect_to request.env["HTTP_REFERER"]

我不确定我需要更改什么才能通过redirect_to :back 的测试。我曾经遇到过这个问题，最后我改变了路线。但是，在这种情况下使用 redirect_to :back 会容易得多。谷歌搜索问题后，我尝试了不同的建议。它们中的大多数已经过时并且并不真正适用。谢谢

【问题讨论】：

查看stackoverflow.com/questions/6040479/…
@neydroid，我在发布问题之前先检查一下问题。我不确定提出的解决方案到底是什么。此外，答案是 5 岁。轨道和其他方面的许多事情都发生了变化。它可能实际上不起作用
您可以发布您的路由器配置以通过适当的示例为您提供答案吗？

标签： ruby-on-rails ruby rspec

【解决方案1】：

在对路由进行任何操作之前，您需要设置 HTTP_REFERER，然后您就可以像这样前往back：

test "valid creation of a message" do 
  request.env["HTTP_REFERER"] = "/posts"
  post user_conversation_messages_path(@user, @conversation), message: {body: "abc"}
  assert_equal "Message Sent Successfully", flash[:success]
end

test "invalid creation of a message" do 
  request.env["HTTP_REFERER"] = "/posts"
  post user_conversation_messages_path(@user, @conversation), message: {body: "  "}
  assert_equal "Message must be 1-600 characters", flash[:success]
end

【讨论】：