3 files changed, 5 insertions, 7 deletions
diff --git a/actionpack/test/activerecord/polymorphic_routes_test.rb b/actionpack/test/activerecord/polymorphic_routes_test.rb
index 20d11377f6..fc829aa6b4 100644
--- a/actionpack/test/activerecord/polymorphic_routes_test.rb
+++ b/actionpack/test/activerecord/polymorphic_routes_test.rb
@@ -34,10 +34,8 @@ module Blog
     set_table_name 'projects'
   end
 
-  def self._railtie
-    o = Object.new
-    def o.railtie_name; "blog" end
-    o
+  def self.use_relative_model_naming?
+    true
   end
 end
 
diff --git a/actionpack/test/lib/controller/fake_models.rb b/actionpack/test/lib/controller/fake_models.rb
index 363403092b..f2362714d7 100644
--- a/actionpack/test/lib/controller/fake_models.rb
+++ b/actionpack/test/lib/controller/fake_models.rb
@@ -175,8 +175,8 @@ class HashBackedAuthor < Hash
 end
 
 module Blog
-  def self._railtie
-    self
+  def self.use_relative_model_naming?
+    true
   end
 
   class Post < Struct.new(:title, :id)
diff --git a/actionpack/test/template/form_helper_test.rb b/actionpack/test/template/form_helper_test.rb
index 34486bb151..ccedcd7dac 100644
--- a/actionpack/test/template/form_helper_test.rb
+++ b/actionpack/test/template/form_helper_test.rb
@@ -740,7 +740,7 @@ class FormHelperTest < ActionView::TestCase
     assert_dom_equal expected, output_buffer
   end
 
-  def test_form_for_with_isolated_namespaced_model
+  def test_form_for_with_model_using_relative_model_naming
     form_for(@blog_post) do |f|
       concat f.text_field :title
       concat f.submit('Edit post')