diff --git a/railties/test/generators/scaffold_generator_test.rb b/railties/test/generators/scaffold_generator_test.rb
index 446bed3269877..f366600b1651f 100644
--- a/railties/test/generators/scaffold_generator_test.rb
+++ b/railties/test/generators/scaffold_generator_test.rb
@@ -18,44 +18,44 @@ def test_scaffold_on_invoke
 
     # Route
     assert_file "config/routes.rb" do |route|
-      assert_match /resources :product_lines$/, route
+      assert_match(/resources :product_lines$/, route)
     end
 
     # Controller
     assert_file "app/controllers/product_lines_controller.rb" do |content|
-      assert_match /class ProductLinesController < ApplicationController/, content
+      assert_match(/class ProductLinesController < ApplicationController/, content)
 
       assert_instance_method :index, content do |m|
-        assert_match /@product_lines = ProductLine\.all/, m
+        assert_match(/@product_lines = ProductLine\.all/, m)
       end
 
       assert_instance_method :show, content do |m|
-        assert_match /@product_line = ProductLine\.find\(params\[:id\]\)/, m
+        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
       end
 
       assert_instance_method :new, content do |m|
-        assert_match /@product_line = ProductLine\.new/, m
+        assert_match(/@product_line = ProductLine\.new/, m)
       end
 
       assert_instance_method :edit, content do |m|
-        assert_match /@product_line = ProductLine\.find\(params\[:id\]\)/, m
+        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
       end
 
       assert_instance_method :create, content do |m|
-        assert_match /@product_line = ProductLine\.new\(params\[:product_line\]\)/, m
-        assert_match /@product_line\.save/, m
-        assert_match /@product_line\.errors/, m
+        assert_match(/@product_line = ProductLine\.new\(params\[:product_line\]\)/, m)
+        assert_match(/@product_line\.save/, m)
+        assert_match(/@product_line\.errors/, m)
       end
 
       assert_instance_method :update, content do |m|
-        assert_match /@product_line = ProductLine\.find\(params\[:id\]\)/, m
-        assert_match /@product_line\.update_attributes\(params\[:product_line\]\)/, m
-        assert_match /@product_line\.errors/, m
+        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
+        assert_match(/@product_line\.update_attributes\(params\[:product_line\]\)/, m)
+        assert_match(/@product_line\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
-        assert_match /@product_line = ProductLine\.find\(params\[:id\]\)/, m
-        assert_match /@product_line\.destroy/, m
+        assert_match(/@product_line = ProductLine\.find\(params\[:id\]\)/, m)
+        assert_match(/@product_line\.destroy/, m)
       end
     end
 
@@ -92,7 +92,7 @@ def test_scaffold_on_revoke
 
     # Route
     assert_file "config/routes.rb" do |route|
-      assert_no_match /resources :product_lines$/, route
+      assert_no_match(/resources :product_lines$/, route)
     end
 
     # Controller
@@ -123,44 +123,44 @@ def test_scaffold_with_namespace_on_invoke
 
     # Route
     assert_file "config/routes.rb" do |route|
-      assert_match /namespace :admin do resources :roles end$/, route
+      assert_match(/namespace :admin do resources :roles end$/, route)
     end
 
     # Controller
     assert_file "app/controllers/admin/roles_controller.rb" do |content|
-      assert_match /class Admin::RolesController < ApplicationController/, content
+      assert_match(/class Admin::RolesController < ApplicationController/, content)
 
       assert_instance_method :index, content do |m|
-        assert_match /@admin_roles = Admin::Role\.all/, m
+        assert_match(/@admin_roles = Admin::Role\.all/, m)
       end
 
       assert_instance_method :show, content do |m|
-        assert_match /@admin_role = Admin::Role\.find\(params\[:id\]\)/, m
+        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
       end
 
       assert_instance_method :new, content do |m|
-        assert_match /@admin_role = Admin::Role\.new/, m
+        assert_match(/@admin_role = Admin::Role\.new/, m)
       end
 
       assert_instance_method :edit, content do |m|
-        assert_match /@admin_role = Admin::Role\.find\(params\[:id\]\)/, m
+        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
       end
 
       assert_instance_method :create, content do |m|
-        assert_match /@admin_role = Admin::Role\.new\(params\[:admin_role\]\)/, m
-        assert_match /@admin_role\.save/, m
-        assert_match /@admin_role\.errors/, m
+        assert_match(/@admin_role = Admin::Role\.new\(params\[:admin_role\]\)/, m)
+        assert_match(/@admin_role\.save/, m)
+        assert_match(/@admin_role\.errors/, m)
       end
 
       assert_instance_method :update, content do |m|
-        assert_match /@admin_role = Admin::Role\.find\(params\[:id\]\)/, m
-        assert_match /@admin_role\.update_attributes\(params\[:admin_role\]\)/, m
-        assert_match /@admin_role\.errors/, m
+        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
+        assert_match(/@admin_role\.update_attributes\(params\[:admin_role\]\)/, m)
+        assert_match(/@admin_role\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
-        assert_match /@admin_role = Admin::Role\.find\(params\[:id\]\)/, m
-        assert_match /@admin_role\.destroy/, m
+        assert_match(/@admin_role = Admin::Role\.find\(params\[:id\]\)/, m)
+        assert_match(/@admin_role\.destroy/, m)
       end
     end
 
@@ -198,7 +198,7 @@ def test_scaffold_with_namespace_on_revoke
 
     # Route
     assert_file "config/routes.rb" do |route|
-      assert_no_match /namespace :admin do resources :roles end$/, route
+      assert_no_match(/namespace :admin do resources :roles end$/, route)
     end
 
     # Controller
@@ -234,7 +234,7 @@ def test_scaffold_generator_on_revoke_does_not_mutilate_legacy_map_parameter
 
   def test_scaffold_generator_outputs_error_message_on_missing_attribute_type
     content = capture(:stderr) { run_generator ["post", "title:string", "body"]}
-    assert_match /Missing type for attribute 'body'/, content
-    assert_match /Example: 'body:string' where string is the type/, content
+    assert_match(/Missing type for attribute 'body'/, content)
+    assert_match(/Example: 'body:string' where string is the type/, content)
   end
 end