Been stuck on a test error on Ruby on Rails tutorial- Error: UsersControllerTest#test_should_redirect_update_when_logged_in_as_wrong_user: -

i've been stuck on 1 while , keep getting 2 errors when rake test. referencing listing 9.23 testing point. appreciated.

test error:

    1) error: userscontrollertest#test_should_redirect_update_when_logged_in_as_wrong_user: nameerror: undefined local variable or method `user_id' #<userscontrollertest:0x007fbff6be3120>     test/test_helper.rb:24:in `log_in_as'     test/controllers/users_controller_test.rb:35:in `block in <class:userscontrollertest>'     2) error: userscontrollertest#test_should_redirect_edit_when_logged_in_as_wrong_user: nameerror: undefined local variable or method `user_id' #<userscontrollertest:0x007fbff6c01850>     test/test_helper.rb:24:in `log_in_as'     test/controllers/users_controller_test.rb:28:in `block in <class:userscontrollertest>'  29 runs, 66 assertions, 0 failures, 2 errors, 0 skips 

user_controller_test file:

require 'test_helper'  class userscontrollertest < actioncontroller::testcase    def setup     @user = users(:michael)     @other_user = users(:archer)   end    test "should new"     :new     assert_response :success   end    test "should redirect edit when not logged in"     :edit, id: @user     assert_not flash.empty?     assert_redirected_to login_url   end    test "should redirect update when not logged in"     patch :update, id: @user, user: { name: @user.name, email: @user.email }     assert_not flash.empty?     assert_redirected_to login_url   end  test "should redirect edit when logged in wrong user"     log_in_as(@other_user)     :edit, id: @user     assert flash.empty?     assert_redirected_to root_url   end 

test_helper.rb:

env['rails_env'] ||= 'test' require file.expand_path('../../config/environment', __file__) require 'rails/test_help'  class activesupport::testcase   # setup fixtures in test/fixtures/*.yml tests in alphabetical order.   fixtures :all  def is_logged_in?     !session[:user_id].nil? end  #logs in test user def log_in_as(user, options = {})     password = options[:password]       || 'password'     remember_me = options[:remember_me] || '1'     if integration_test?         post login_path, session: { email: user.email,                                     password: password,                                     remember_me: remember_me}  else  session[:user_id] = user_id  end end  private #returns true inside int. test def integration_test?     defined?(post_via_redirect)     end end 

and user_id come here?

def log_in_as(user, options = {})   ...    if integration_test?     ...   else     session[:user_id] = user_id   end end 

seems should be:

session[:user_id] = user.id