Delegate test_helper configuration to test_unit generator

Author: joaquintomas2003

railties/lib/rails/generators/rails/authentication/authentication_generator.rb

@@ -56,11 +56,6 @@ def add_migrations
         generate "migration", "CreateSessions", "user:references ip_address:string user_agent:string", "--force"
       end
 
-      def configure_test_helper
-        inject_into_file "test/test_helper.rb", "require_relative \"test_helpers/session_test_helper\"\n", after: "require \"rails/test_help\"\n"
-        inject_into_class "test/test_helper.rb", "TestCase", "    include SessionTestHelper\n"
-      end
-
       hook_for :test_framework
     end
   end

railties/lib/rails/generators/test_unit/authentication/authentication_generator.rb

@@ -22,6 +22,11 @@ def create_mailer_preview_files
       def create_test_helper_files
         template "test/test_helpers/session_test_helper.rb"
       end
+
+      def configure_test_helper
+        inject_into_file "test/test_helper.rb", "require_relative \"test_helpers/session_test_helper\"\n", after: "require \"rails/test_help\"\n"
+        inject_into_class "test/test_helper.rb", "TestCase", "    include SessionTestHelper\n"
+      end
     end
   end
 end