Rails - Jul 2011 - Ruby on Rails Tutorial Chapter 8 Signup Success

I have written the Users controller and Spec tests correctly for the
"successful creation" in the User controller however I get the
following two errors:

    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-hcDgGtZH8xNBDgjK7y7TUQ@public.gmane.org", 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)>''


The test specs are as follows:

    describe "success" do
       before (:each) do
           @attr = { :name => "New User" ,
                      :email =>
"user-hcDgGtZH8xNBDgjK7y7TUQ@public.gmane.org",
                      :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

The controller code is as follows:

    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

I''m also getting one new error:


3) UsersController POST ''create'' success should have a welcome
message

     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)>''


Here''s the user model code:

    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

What''s going wrong?

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