Use setup callback

test/system/admin_area/sign_in_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class AdminAreaSignInTest < ApplicationSystemTestCase
-  def setup
+  setup do
     @user = users(:admin)
   end
 

test/system/admin_area/sign_out_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class AdminAreaSignOutTest < ApplicationSystemTestCase
-  def setup
+  setup do
     sign_in users(:admin)
   end
 

test/system/registrar_area/sign_in/password_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class RegistrarAreaPasswordSignInTest < ApplicationSystemTestCase
-  def setup
+  setup do
     @user = users(:api_bestnames)
   end
 

test/system/registrar_area/sign_out_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class RegistrarAreaSignOutTest < ApplicationSystemTestCase
-  def setup
+  setup do
     sign_in users(:api_bestnames)
   end