Ruby on Rails教程第8章注册成功

Question

我已经为用户控制器中的“成功创建”正确地编写了用户控制器和Spec测试，但是我得到了以下两个错误：

1) UsersController POST 'create' success should create a user
    Failure/Error: lambda do
      count should have been changed by 1, but was changed by 0
    # ./spec/controllers/users_controller_spec.rb:95:in `block (4 levels) in <top (required)>'

 2) UsersController POST 'create' success should redirect to the user show page
    Failure/Error: response.should redirect_to(user_path(assigns(:user)))
    ActionController::RoutingError:
      No route matches {:action=>"show", :controller=>"users", :id=>#<User id: nil, name: "New User", email: "user@example.com", created_at: nil, updated_at: nil, encrypted_password: nil, salt: nil>}
    # ./spec/controllers/users_controller_spec.rb:102:in `block (4 levels) in <top (required)>'

测试规格如下：

describe "success" do
   before (:each) do
       @attr = { :name => "New User" , 
                  :email => "user@example.com",
                  :password => "foobar",
                  :password_confirmation => "foobar"
                }
   end

   it  "should create a user" do
            lambda do
             post :create, :user => @attr
           end.should change(User, :count).by(1)
        end

   it  "should redirect to the user show page" do
             post :create, :user => @attr
             response.should redirect_to(user_path(assigns(:user)))
        end


   it "should have a welcome message" do
             post :create, :user => @attr
             flash[:success].should =~ /welcome to the sample app/i 
        end

   end 
end

控制器代码如下：

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

  def new
    @user  = User.new
    @title = "Sign Up"
  end

  def create
     @user = User.new(params[:user])
     if @user.save
       redirect_to @user, :flash => { :success => "Welcome to the Sample App!" }
     else
       @title = "Sign up"
       render 'new'
     end
   end
end

我还得到了一个新的错误：

3) UsersController POST 'create‘success应该有欢迎消息

 Failure/Error: flash[:success].should =~ /welcome to the sample app/i
   expected: /welcome to the sample app/i
        got: nil (using =~)
 # ./spec/controllers/users_controller_spec.rb:107:in `block (4 levels) in <top (required)>'

下面是用户模型代码：

class User < ActiveRecord::Base

  attr_accessor :password

  attr_accessible :name, :email, :password, :password_confirmation

  email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates :name, :presence => true, 
                   :length => {:maximum => 50}
  validates :email, :presence => true, 
                    :format => {:with => email_regex}, 
                    :uniqueness => {:case_sensitive => false}
  validates :password, :presence => true,
                       :confirmation => true,
                       :length => {:within => 6..40}

  before_save :encrypt_password

  def has_password?(submitted_password)
    encrypted_password == encrypt(submitted_password)
  end

  class << self
    def authenticate(email, submitted_password)
      user = User.find_by_email(email)
      return nil if user.nil?
      return user if user.has_password?(submitted_password)
    end
  end

出什么问题了？

Answer 1

我也有同样的问题，对我来说问题就是电子邮件。我更改了它，测试又开始工作了。

Answer 2

我正经历着完全相同的问题，它奇怪地消失了。我完全删除了“应该受到欢迎……”的部分。并再次复制(我建议您复制并粘贴以下代码)：

  it "should have a welcome message" do
    post :create, :user => @attr
    flash[:success].should =~ /welcome to the sample app/i
  end

我知道它没有多大意义，但它解决了我的问题，现在一切都是绿色的。