Railsチュートリアル10.63 ユーザー削除のテストが通りません

Question

10.63テストが通りません

Railsチュートリアルの10章
10.4.3 ユーザー削除のテストにて
テストが通らずつまづいています。
教えて頂けると幸いです（; ;）
よろしくお願いいたします。

発生している問題・エラーメッセージ

Running via Spring preloader in process 8870
Started with run options --seed 11876

 FAIL["test_index_as_admin_including_pagination_and_delete_links", UsersIndexTest, 1.1001858529998572]
 test_index_as_admin_including_pagination_and_delete_links#UsersIndexTest (1.10s)
        <delete> expected but was
        <User 19>..
        Expected 0 to be >= 1.
        test/integration/users_index_test.rb:19:in `block (2 levels) in <class:UsersIndexTest>'
        test/integration/users_index_test.rb:16:in `block in <class:UsersIndexTest>'

  39/39: [==========] 100% Time: 00:00:01, Time: 00:00:01

Finished in 1.21352s
39 tests, 105 assertions, 1 failures, 0 errors, 0 skips

該当のソースコード

#sample_app/users_index_test.rb
require 'test_helper'

class UsersIndexTest < ActionDispatch::IntegrationTest

  def setup
    @admin = users(:michael)
    @non_admin = users(:archer)
  end

  test "index as admin including pagination and delete links" do
    log_in_as(@admin)
    get users_path
    assert_template 'users/index'
    assert_select 'div.pagination'
    first_page_of_users = User.paginate(page: 1)
    first_page_of_users.each do |user| #<=16行目
      assert_select 'a[href=?]', user_path(user), text: user.name
      unless user == @admin
        assert_select 'a[href=?]', user_path(user), text: 'delete' #<=19行目
      end
    end
    assert_difference 'User.count', -1 do
      delete user_path(@non_admin)
    end
  end

  test "index as non-admin" do
    log_in_as(@non_admin)
    get users_path
    assert_select 'a', text: 'delete', count: 0
  end
end

試したこと

参照https://kotaeta.com/61946369
test "index as admin including pagination and delete links"を
下記の通りに変更してみましたが…

    User.paginate(page: 1).each do |user|
      if user.activated?
        assert_select 'a[href=?]', user_path(user), text: user.name
        unless user == @admin
          assert_select 'a[href=?]', user_path(user), text: 'delete'
        end
      else
        assert_select 'a[href=?]', user_path(user), text: user.name, count: 0
      end
    end

NoMethodError: undefined method `activated?' とうエラーが出ました。

---

sample_app/users_index_test.rb
下記の部分をコメントアウトするとテストが通ります。

    first_page_of_users = User.paginate(page: 1)
    first_page_of_users.each do |user|
      assert_select 'a[href=?]', user_path(user), text: user.name
      unless user == @admin
        assert_select 'a[href=?]', user_path(user), text: 'delete'
      end
    end
    assert_difference 'User.count', -1 do
      delete user_path(@non_admin)
    end

補足情報（FW/ツールのバージョンなど）

cloud9
Ruby5.1.6

Answer 1

#test/fixtures/users.yml

michael:
  name: Michael Example
  email: [e-mail]
  password_digest: <%= User.digest('password') %>
  admin: true #<=ここが抜けていました

archer:
  name: Sterling Archer
  email: [e-mail]
  password_digest: <%= User.digest('password') %>

lana:
  name: Lana Kane
  email: [e-mail]
  password_digest: <%= User.digest('password') %>

mallory:
  name: Mallory Archer
  email: [e-mail]
  password_digest: <%= User.digest('password') %>

<% 30.times do |n| %>
user_<%= n %>:
  name:  <%= "User #{n}" %>
  email: <%= "user-#{n}@example.com" %>
  password_digest: <%= User.digest('password') %>
<% end %>

9.4.3ユーザー削除のテスト
michaelさんのadmin: trueという行が抜けていました！