diff --git a/activerecord/test/cases/attribute_methods_test.rb b/activerecord/test/cases/attribute_methods_test.rb
index 4bc68acd1382746ae239b39c615a8429adfa4a80..c043e32a204c3e6e1169df820a095e0164397ca5 100644
--- a/activerecord/test/cases/attribute_methods_test.rb
+++ b/activerecord/test/cases/attribute_methods_test.rb
@@ -734,6 +734,12 @@ def test_list_of_serialized_attributes
     assert_equal %w(preferences), Contact.serialized_attributes.keys
   end
 
+  def test_serialized_attributes_are_class_level_settings
+    topic = Topic.new
+    assert_raise(NoMethodError) { topic.serialized_attributes = [] }
+    assert_deprecated { topic.serialized_attributes }
+  end
+
   def test_instance_method_should_be_defined_on_the_base_class
     subklass = Class.new(Topic)
 
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 63981a68a9e829d6efa928ed2fb84c870d56c22e..8915e1aea7afa51b0b9fd96593bfda3c28630ea2 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1310,6 +1310,12 @@ def test_serialized_attribute
     assert_equal(myobj, topic.content)
   end
 
+  def test_serialized_attribute_init_with
+    topic = Topic.allocate
+    topic.init_with('attributes' => { 'content' => '--- foo' })
+    assert_equal 'foo', topic.content
+  end
+
   def test_serialized_attribute_in_base_class
     Topic.serialize("content", Hash)
 
diff --git a/activerecord/test/cases/serialization_test.rb b/activerecord/test/cases/serialization_test.rb
index 10d8ccc7119d29cc2943a64e479fbd87f64bf983..25b860878aa8d0317295b47d4fa7baba26b9b771 100644
--- a/activerecord/test/cases/serialization_test.rb
+++ b/activerecord/test/cases/serialization_test.rb
@@ -18,12 +18,6 @@ def setup
     }
   end
 
-  def test_serialized_init_with
-    topic = Topic.allocate
-    topic.init_with('attributes' => { 'content' => '--- foo' })
-    assert_equal 'foo', topic.content
-  end
-
   def test_serialize_should_be_reversible
     FORMATS.each do |format|
       @serialized = Contact.new.send("to_#{format}")
@@ -51,10 +45,4 @@ def test_serialize_should_allow_attribute_except_filtering
       assert_equal @contact_attributes[:awesome], contact.awesome, "For #{format}"
     end
   end
-
-  def test_serialized_attributes_are_class_level_settings
-    topic = Topic.new
-    assert_raise(NoMethodError) { topic.serialized_attributes = [] }
-    assert_deprecated { topic.serialized_attributes }
-  end
 end