Add test for custom root and meta using the array serializer

test/action_controller/serialization_test.rb

@@ -33,6 +33,14 @@ def render_using_custom_root_in_adapter_with_a_default
           render json: @profile, root: "profile", adapter: :json_api
         end
 
+        def render_array_using_custom_root_and_meta
+          array = [
+            Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' }),
+            Profile.new({ name: 'Name 2', description: 'Description 2', comments: 'Comments 2' })
+          ]
+          render json: array, root: "custom_root", meta: { total: 10 }
+        end
+
         def render_array_using_implicit_serializer
           array = [
             Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' }),
@@ -209,6 +217,25 @@ def test_render_using_custom_root_in_adapter_with_a_default
         assert_equal expected.to_json, @response.body
       end
 
+      def test_render_array_using_custom_root_and_meta
+        get :render_array_using_custom_root_and_meta
+        assert_equal 'application/json', @response.content_type
+
+        expected = { custom_root: [
+          {
+            name: 'Name 1',
+            description: 'Description 1',
+          },
+          {
+            name: 'Name 2',
+            description: 'Description 2',
+          }],
+          meta: { total: 10 }
+        }
+
+        assert_equal expected.to_json, @response.body
+      end
+
       def test_render_array_using_implicit_serializer
         get :render_array_using_implicit_serializer
         assert_equal 'application/json', @response.content_type