Ruby on Rails教程第8章测试错误

Question

我在Michael Hartl的Ruby on Rails教程的8.2.1章中遇到了两个不同的测试错误。 我是Rails的新手，但是我对语法错误和我能找到的其他任何东西进行了三重检查。 很感谢任何形式的帮助。

错误消息1：ERROR [“ test_should_get_new”，Minitest :: Result，0.9693643249993329] test_should_get_new＃Minitest :: Result（0.97s）NameError：NameError：未定义的局部变量或方法users_new_url' for #<UsersControllerTest:0x00000006e953f8> test/controllers/users_controller_test.rb:5:in在'

错误消息2：ERROR [“ test_invalid_signup_information”，Minitest :: Result，0.8977870759990765] test_invalid_signup_information＃Minitest :: Result（0.90s）ActionController :: RoutingError：ActionController :: RoutingError：No route match [POST]“ / signup”测试/集成/users_signup_test.rb:8 block (2 levels) in <class:UsersSignupTest>' test/integration/users_signup_test.rb:7:in在'

的routes.rb

    Rails.application.routes.draw do

  root   'static_pages#home'
  get    '/help',    to: 'static_pages#help'
  get    '/about',   to: 'static_pages#about'
  get    '/contact', to: 'static_pages#contact'
  get    '/signup',  to: 'users#new'
  get    '/login',   to: 'sessions#new'
  post   '/login',   to: 'sessions#create'
  delete '/logout',  to: 'sessions#destroy'
  resources :users

end

会话控制器：

    class SessionsController < ApplicationController

  def new
  end

  def create
    user = User.find_by(email: params[:session][:email].downcase)
    if user && user.authenticate(params[:session][:password])
      # Log the user in and redirect to the user's show page.
    else
      flash.now[:danger] = 'Invalid email/password combination'
      render 'new'
    end
  end

  def destroy
  end
end

用户控制器：

    class UsersController < ApplicationController
  def show
    @user = User.find(params[:id])
  end

  def new
    @user = User.new
  end
  def create
    @user = User.new(user_params)
    if @user.save
      flash[:success] = "Welcome to your new profile!"
      redirect_to @user
    else
      render 'new'
    end
  end

  private

    def user_params
      params.require(:user).permit(:name, :email, :password,
                                   :password_confirmation)
    end

end

用户控制器测试

    require 'test_helper'

class UsersControllerTest < ActionDispatch::IntegrationTest
  test "should get new" do
    get users_new_url
    assert_response :success
  end

end

用户注册测试

    require 'test_helper'

class UsersSignupTest < ActionDispatch::IntegrationTest

  test "invalid signup information" do
    get signup_path
    assert_no_difference 'User.count' do
      post users_path, params: { user: { name:  "",
                                         email: "user@invalid",
                                         password:              "foo",
                                         password_confirmation: "bar" } }
    end
    assert_template 'users/new'

  assert_select 'div#error_explanation'
  assert_select 'div.field_with_errors'
  assert_select 'form[action="/signup"]'
  end

  test "valid signup information" do
    get signup_path
    assert_difference 'User.count', 1 do
      post users_path, params: { user: { name: "Example User",
                                        email: "user@example.com", 
                                        password:             "password",
                                        password_confirmation: "password" } }
    end
    follow_redirect!
    assert_template 'users/show'
    assert_not flash.nil?
  end

end

Answer 1

在您的users_controller_test ，代码不知道users_new_url是什么。 这可能是因为该路由不存在。 您很可能必须执行诸如get new_user_path ，但是您可以通过键入rake routes并获取可用路由列表来查找。

这是rake routes将输出的示例：

users     GET     /users(.:format)                    users#index
          POST    /users(.:format)                    users#create
new_user  GET     /users/new(.:format)                users#new
edit_user GET     /users/:id/edit(.:format)           users#edit
user      GET     /users/:id(.:format)                users#show

您可以通过在名称后附加_path来引用命名路径。 即users_path将映射到"users#index"控制器和方法。

rake routes也将帮助您解决第二个问题，即您没有为POST / signup定义的路由-您具有GET / signup。

因此，您需要添加如下一行：

post '/signup', to: 'users#create'

此路由将映射到UsersController的#create方法，我在代码中看到了该方法。