在rspec rails中测试redirect_to:back

Question

我有一个控制器方法，它使用＜code＞redirect_to:back＜code＞将用户重定向回原始页面。方法如下所示。

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

我试图为有效和无效的创建方法编写一个集成测试。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

我得到以下与redirect_to相关联的错误：back。

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>'

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

redirect_to request.env["HTTP_REFERER"]

我不确定我需要改变什么来通过redirect_to :back的测试。我曾经遇到过这个问题，结果我改变了路线。然而，在这种情况下，使用redirect_to :back要容易得多。我在谷歌上搜索了这个问题后，尝试了不同的建议。大部分都过时了，并不真正适用。谢谢

Answer 1

在对路由进行任何操作之前，您需要设置HTTP_REFERER，然后您将像这样< code>back返回到哪里:

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