Я делаю учебник Hartle и вижу этот сбой каждый раз, когда я запускаю тест рейка, я вижу этот сбой:

  1) Failure:
StaticPagesControllerTest#test_should_get_help [.../sample_app/test/controllers/static_pages_controller_test.rb:14]:
<Help | Ruby on Rails Tutorial Sample App> expected but was
<Ruby on Rails Tutorial Sample App>..
Expected 0 to be >= 1.

Что это значит? И как я могу это решить? Это мой файл static_pages_controller_test.rb.

require 'test_helper'

class StaticPagesControllerTest < ActionController::TestCase

  test "should get home" do
    get :home
    assert_response :success
    assert_select "title", "Ruby on Rails Tutorial Sample App"   end

  test "should get help" do
    get :help
    assert_response :success
    assert_select "title", "Help | Ruby on Rails Tutorial Sample App"   end

  test "should get about" do
    get :about
    assert_response :success
    assert_select "title", "About | Ruby on Rails Tutorial Sample App"   end

  test "should get contact" do
    get :contact
    assert_response :success
    assert_select "title", "Contact | Ruby on Rails Tutorial Sample App"   end end

И вот строка 14.

assert_select "title", "Help | Ruby on Rails Tutorial Sample App"