Question

我正在关注Michael Hartl的Ruby on Rails Tutorial。

我到了Chapter 11.37，但我的测试失败了。我收到以下错误：

Failure/Error: xhr :post, :create, relationship: { followed_id: other_user.id }
ArgumentError:
bad argument (expected URI object or URI string)

我是Ruby on Rails的新手，所以我真的不知道出了什么问题。有人可以帮助解决此错误吗？

控制器/ relationships_controller.rb：

class RelationshipsController < ApplicationController
  before_action :signed_in_user

  def create
    @user = User.find(params[:relationship][:followed_id])
    current_user.follow!(@user)
    respond_to do |format|
      format.html { redirect_to @user }
      format.js
    end
  end

  def destroy
    @user = Relationship.find(params[:id]).followed
    current_user.unfollow!(@user)
    respond_to do |format|
      format.html { redirect_to @user }
      format.js
    end
  end
end

特征/ relationships_controller_spec.rb：

require 'spec_helper'

describe RelationshipsController, type: :request do

  let(:user) { FactoryGirl.create(:user) }
  let(:other_user) { FactoryGirl.create(:user) }

  before { sign_in user, no_capybara: true }

  describe "creating a relationship with Ajax" do

    it "should increment the Relationship count" do
      expect do
        xhr :post, :create, relationship: { followed_id: other_user.id }
      end.to change(Relationship, :count).by(1)
    end

    it "should respond with success" do
      xhr :post, :create, relationship: { followed_id: other_user.id }
      expect(response).to be_success
    end
  end

  describe "destroying a relationship with Ajax" do

    before { user.follow!(other_user) }
    let(:relationship) { user.relationships.find_by(followed_id: other_user) }

    it "should decrement the Relationship count" do
      expect do
        xhr :delete, :destroy, id: relationship.id
      end.to change(Relationship, :count).by(-1)
    end

    it "should respond with success" do
      xhr :delete, :destroy, id: relationship.id
      expect(response).to be_success
    end
  end
end

Answer 1

本教程所依赖的xhr The version，其方法作为第二个参数，来自ActionController::TestCase::Behavior。该模块仅包含在rspec-rails gem的 controller 或 view 测试中。你正在从Rails中获取another version of xhr，并期望一个路径作为第二个参数，因此你得到了错误。

您需要确保测试的类型为controller，方法是将其包含在controllers目录中或明确设置测试类型。由于您在 features 目录中进行了测试而未进行其他类型的测试，因此不会将其视为控制器测试。（注意：教程中的图11.37确实将测试驻留在spec/controllers目录中。）

Answer 2

xhr方法seems to receive a path而不是动作名称。因此，如果用

替换它应该有效

xhr :post, relationships_path, relationship: { followed_id: other_user.id }

如何解决“错误的参数（预期的URI对象或URI字符串）”？ Ruby on Rails，Michael Hartl教程

2 个答案: