From 33f3a88ba0327a0991fbea081fb61ed5d52771b4 Mon Sep 17 00:00:00 2001
From: Mateo Murphy <mateo.murphy@gmail.com>
Date: Fri, 20 Mar 2015 16:04:33 -0400
Subject: [PATCH] Implement `included` and `id` and `type` as per spec

---
 lib/active_model/serializer.rb                | 10 +++
 .../serializer/adapter/json_api.rb            | 27 +++----
 .../adapter_selector_test.rb                  | 12 ++-
 .../action_controller/json_api_linked_test.rb | 47 ++++++-----
 .../serialization_scope_name_test.rb          | 16 ++--
 test/action_controller/serialization_test.rb  | 81 ++++++++++++++-----
 test/adapter/json_api/belongs_to_test.rb      | 27 ++++---
 test/adapter/json_api/collection_test.rb      | 10 ++-
 .../has_many_explicit_serializer_test.rb      | 25 +++---
 test/adapter/json_api/has_many_test.rb        |  8 +-
 test/adapter/json_api/has_one_test.rb         |  3 +-
 test/adapter/json_api/linked_test.rb          | 67 ++++++++-------
 12 files changed, 203 insertions(+), 130 deletions(-)

diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index b6193400..588abc99 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -164,6 +164,14 @@ module ActiveModel
       end
     end
 
+    def id
+      object.id if object
+    end
+
+    def type
+      object.class.to_s.demodulize.underscore.pluralize
+    end
+
     def attributes(options = {})
       attributes =
         if options[:fields]
@@ -172,6 +180,8 @@ module ActiveModel
           self.class._attributes.dup
         end
 
+      attributes += options[:required_fields] if options[:required_fields]
+
       attributes.each_with_object({}) do |name, hash|
         hash[name] = send(name)
       end
diff --git a/lib/active_model/serializer/adapter/json_api.rb b/lib/active_model/serializer/adapter/json_api.rb
index ef51ea14..69e69028 100644
--- a/lib/active_model/serializer/adapter/json_api.rb
+++ b/lib/active_model/serializer/adapter/json_api.rb
@@ -35,11 +35,9 @@ module ActiveModel
         private
 
         def add_links(resource, name, serializers)
-          type = serialized_object_type(serializers)
           resource[:links] ||= {}
-
           resource[:links][name] ||= { linkage: [] }
-          resource[:links][name][:linkage] += serializers.map { |serializer| { type: type, id: serializer.id.to_s } }
+          resource[:links][name][:linkage] += serializers.map { |serializer| { type: serializer.type, id: serializer.id.to_s } }
         end
 
         def add_link(resource, name, serializer)
@@ -47,9 +45,7 @@ module ActiveModel
           resource[:links][name] = { linkage: nil }
 
           if serializer && serializer.object
-            type = serialized_object_type(serializer)
-
-            resource[:links][name][:linkage] = { type: type, id: serializer.id.to_s }
+            resource[:links][name][:linkage] = { type: serializer.type, id: serializer.id.to_s }
           end
         end
 
@@ -58,17 +54,15 @@ module ActiveModel
 
           resource_path = [parent, resource_name].compact.join('.')
 
-          if include_assoc?(resource_path) && resource_type = serialized_object_type(serializers)
-            plural_name = resource_type.pluralize.to_sym
-            @top[:linked] ||= {}
-            @top[:linked][plural_name] ||= []
+          if include_assoc?(resource_path)
+            @top[:included] ||= []
 
             serializers.each do |serializer|
               attrs = attributes_for_serializer(serializer, @options)
 
               add_resource_links(attrs, serializer, add_included: false)
 
-              @top[:linked][plural_name].push(attrs) unless @top[:linked][plural_name].include?(attrs)
+              @top[:included].push(attrs) unless @top[:included].include?(attrs)
             end
           end
 
@@ -85,14 +79,16 @@ module ActiveModel
             result = []
             serializer.each do |object|
               options[:fields] = @fieldset && @fieldset.fields_for(serializer)
+              options[:required_fields] = [:id, :type]
               attributes = object.attributes(options)
-              attributes[:id] = attributes[:id].to_s if attributes[:id]
+              attributes[:id] = attributes[:id].to_s
               result << attributes
             end
           else
             options[:fields] = @fieldset && @fieldset.fields_for(serializer)
+            options[:required_fields] = [:id, :type]
             result = serializer.attributes(options)
-            result[:id] = result[:id].to_s if result[:id]
+            result[:id] = result[:id].to_s
           end
 
           result
@@ -116,11 +112,6 @@ module ActiveModel
           end
         end
 
-        def serialized_object_type(serializer)
-          return false unless Array(serializer).first
-          Array(serializer).first.object.class.to_s.demodulize.underscore.pluralize
-        end
-
         def add_resource_links(attrs, serializer, options = {})
           options[:add_included] = options.fetch(:add_included, true)
 
diff --git a/test/action_controller/adapter_selector_test.rb b/test/action_controller/adapter_selector_test.rb
index ea266881..efa61f7b 100644
--- a/test/action_controller/adapter_selector_test.rb
+++ b/test/action_controller/adapter_selector_test.rb
@@ -29,7 +29,17 @@ module ActionController
 
       def test_render_using_adapter_override
         get :render_using_adapter_override
-        assert_equal '{"data":{"name":"Name 1","description":"Description 1"}}', response.body
+
+        expected = {
+          data: {
+            name: "Name 1",
+            description: "Description 1",
+            id: assigns(:profile).id.to_s,
+            type: "profiles"
+          }
+        }
+
+        assert_equal expected.to_json, response.body
       end
 
       def test_render_skipping_adapter
diff --git a/test/action_controller/json_api_linked_test.rb b/test/action_controller/json_api_linked_test.rb
index 3f8b45eb..321974e3 100644
--- a/test/action_controller/json_api_linked_test.rb
+++ b/test/action_controller/json_api_linked_test.rb
@@ -83,80 +83,87 @@ module ActionController
       def test_render_resource_without_include
         get :render_resource_without_include
         response = JSON.parse(@response.body)
-        refute response.key? 'linked'
+        refute response.key? 'included'
       end
 
       def test_render_resource_with_include
         get :render_resource_with_include
         response = JSON.parse(@response.body)
-        assert response.key? 'linked'
-        assert_equal 1, response['linked']['authors'].size
-        assert_equal 'Steve K.', response['linked']['authors'].first['name']
+        assert response.key? 'included'
+        assert_equal 1, response['included'].size
+        assert_equal 'Steve K.', response['included'].first['name']
       end
 
       def test_render_resource_with_nested_has_many_include
         get :render_resource_with_nested_has_many_include
         response = JSON.parse(@response.body)
-        expected_linked = {
-          "authors" => [{
+        expected_linked = [
+          {
             "id" => "1",
+            "type" => "authors",
             "name" => "Steve K.",
             "links" => {
               "posts" => { "linkage" => [] },
               "roles" => { "linkage" => [{ "type" =>"roles", "id" => "1" }, { "type" =>"roles", "id" => "2" }] },
               "bio" => { "linkage" => nil }
             }
-          }],
-          "roles"=>[{
+          }, {
             "id" => "1",
+            "type" => "roles",
             "name" => "admin",
             "links" => {
               "author" => { "linkage" => { "type" =>"authors", "id" => "1" } }
             }
           }, {
             "id" => "2",
+            "type" => "roles",
             "name" => "colab",
             "links" => {
               "author" => { "linkage" => { "type" =>"authors", "id" => "1" } }
             }
-          }]
-        }
-        assert_equal expected_linked, response['linked']
+          }
+        ]
+        assert_equal expected_linked, response['included']
       end
 
       def test_render_resource_with_nested_include
         get :render_resource_with_nested_include
         response = JSON.parse(@response.body)
-        assert response.key? 'linked'
-        assert_equal 1, response['linked']['authors'].size
-        assert_equal 'Anonymous', response['linked']['authors'].first['name']
+        assert response.key? 'included'
+        assert_equal 1, response['included'].size
+        assert_equal 'Anonymous', response['included'].first['name']
       end
 
       def test_render_collection_without_include
         get :render_collection_without_include
         response = JSON.parse(@response.body)
-        refute response.key? 'linked'
+        refute response.key? 'included'
       end
 
       def test_render_collection_with_include
         get :render_collection_with_include
         response = JSON.parse(@response.body)
-        assert response.key? 'linked'
+        assert response.key? 'included'
       end
 
       def test_render_resource_with_nested_attributes_even_when_missing_associations
         get :render_resource_with_missing_nested_has_many_include
         response = JSON.parse(@response.body)
-        assert response.key? 'linked'
-        refute response['linked'].key? 'roles'
+        assert response.key? 'included'
+        refute has_type?(response['included'], 'roles')
       end
 
       def test_render_collection_with_missing_nested_has_many_include
         get :render_collection_with_missing_nested_has_many_include
         response = JSON.parse(@response.body)
-        assert response.key? 'linked'
-        assert response['linked'].key? 'roles'
+        assert response.key? 'included'
+        assert has_type?(response['included'], 'roles')
       end
+
+      def has_type?(collection, value)
+        collection.detect { |i| i['type'] == value}
+      end
+
     end
   end
 end
diff --git a/test/action_controller/serialization_scope_name_test.rb b/test/action_controller/serialization_scope_name_test.rb
index df77231a..65f44c00 100644
--- a/test/action_controller/serialization_scope_name_test.rb
+++ b/test/action_controller/serialization_scope_name_test.rb
@@ -2,7 +2,7 @@ require 'test_helper'
 require 'pathname'
 
 class DefaultScopeNameTest < ActionController::TestCase
-  TestUser = Struct.new(:name, :admin)
+  TestUser = Struct.new(:id, :name, :admin)
 
   class UserSerializer < ActiveModel::Serializer
     attributes :admin?
@@ -17,11 +17,11 @@ class DefaultScopeNameTest < ActionController::TestCase
     before_filter { request.format = :json }
 
     def current_user
-      TestUser.new('Pete', false)
+      TestUser.new(1, 'Pete', false)
     end
 
     def render_new_user
-      render json: TestUser.new('pete', false), serializer: UserSerializer, adapter: :json_api
+      render json: TestUser.new(1, 'pete', false), serializer: UserSerializer, adapter: :json_api
     end
   end
 
@@ -29,12 +29,12 @@ class DefaultScopeNameTest < ActionController::TestCase
 
   def test_default_scope_name
     get :render_new_user
-    assert_equal '{"data":{"admin?":false}}', @response.body
+    assert_equal '{"data":{"admin?":false,"id":"1","type":"test_users"}}', @response.body
   end
 end
 
 class SerializationScopeNameTest < ActionController::TestCase
-  TestUser = Struct.new(:name, :admin)
+  TestUser = Struct.new(:id, :name, :admin)
 
   class AdminUserSerializer < ActiveModel::Serializer
     attributes :admin?
@@ -50,11 +50,11 @@ class SerializationScopeNameTest < ActionController::TestCase
     before_filter { request.format = :json }
 
     def current_admin
-      TestUser.new('Bob', true)
+      TestUser.new(1, 'Bob', true)
     end
 
     def render_new_user
-      render json: TestUser.new('pete', false), serializer: AdminUserSerializer, adapter: :json_api
+      render json: TestUser.new(1, 'pete', false), serializer: AdminUserSerializer, adapter: :json_api
     end
   end
 
@@ -62,6 +62,6 @@ class SerializationScopeNameTest < ActionController::TestCase
 
   def test_override_scope_name_with_controller
     get :render_new_user
-    assert_equal '{"data":{"admin?":true}}', @response.body
+    assert_equal '{"data":{"admin?":true,"id":"1","type":"test_users"}}', @response.body
   end
 end
\ No newline at end of file
diff --git a/test/action_controller/serialization_test.rb b/test/action_controller/serialization_test.rb
index 28325ede..b47db521 100644
--- a/test/action_controller/serialization_test.rb
+++ b/test/action_controller/serialization_test.rb
@@ -15,13 +15,11 @@ module ActionController
         end
 
         def render_using_default_adapter_root
-          old_adapter = ActiveModel::Serializer.config.adapter
-          # JSON-API adapter sets root by default
-          ActiveModel::Serializer.config.adapter = ActiveModel::Serializer::Adapter::JsonApi
-          @profile = Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
-          render json: @profile
-        ensure
-          ActiveModel::Serializer.config.adapter = old_adapter
+          with_adapter ActiveModel::Serializer::Adapter::JsonApi do
+            # JSON-API adapter sets root by default
+            @profile = Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
+            render json: @profile
+          end
         end
 
         def render_using_custom_root_in_adapter_with_a_default
@@ -39,15 +37,14 @@ module ActionController
         end
 
         def render_array_using_implicit_serializer_and_meta
-          old_adapter = ActiveModel::Serializer.config.adapter
+          with_adapter ActiveModel::Serializer::Adapter::JsonApi do
 
-          ActiveModel::Serializer.config.adapter = ActiveModel::Serializer::Adapter::JsonApi
-          array = [
-            Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
-          ]
-          render json: array, meta: { total: 10 }
-          ensure
-          ActiveModel::Serializer.config.adapter = old_adapter
+            @profiles = [
+              Profile.new({ name: 'Name 1', description: 'Description 1', comments: 'Comments 1' })
+            ]
+
+            render json: @profiles, meta: { total: 10 }
+          end
         end
 
         def render_object_with_cache_enabled
@@ -88,6 +85,15 @@ module ActionController
           adapter = ActiveModel::Serializer.adapter.new(serializer)
           adapter.to_json
         end
+
+        def with_adapter(adapter)
+          old_adapter = ActiveModel::Serializer.config.adapter
+          # JSON-API adapter sets root by default
+          ActiveModel::Serializer.config.adapter = adapter
+          yield
+        ensure
+          ActiveModel::Serializer.config.adapter = old_adapter
+        end
       end
 
       tests MyController
@@ -96,8 +102,13 @@ module ActionController
       def test_render_using_implicit_serializer
         get :render_using_implicit_serializer
 
+        expected = {
+          name: "Name 1",
+          description: "Description 1"
+        }
+
         assert_equal 'application/json', @response.content_type
-        assert_equal '{"name":"Name 1","description":"Description 1"}', @response.body
+        assert_equal expected.to_json, @response.body
       end
 
       def test_render_using_custom_root
@@ -110,15 +121,33 @@ module ActionController
       def test_render_using_default_root
         get :render_using_default_adapter_root
 
+        expected = {
+          data: {
+            name: "Name 1",
+            description: "Description 1",
+            id: assigns(:profile).id.to_s,
+            type: "profiles"
+          }
+        }
+
         assert_equal 'application/json', @response.content_type
-        assert_equal '{"data":{"name":"Name 1","description":"Description 1"}}', @response.body
+        assert_equal expected.to_json, @response.body
       end
 
       def test_render_using_custom_root_in_adapter_with_a_default
         get :render_using_custom_root_in_adapter_with_a_default
 
+        expected = {
+          data: {
+            name: "Name 1",
+            description: "Description 1",
+            id: assigns(:profile).id.to_s,
+            type: "profiles"
+          }
+        }
+
         assert_equal 'application/json', @response.content_type
-        assert_equal '{"data":{"name":"Name 1","description":"Description 1"}}', @response.body
+        assert_equal expected.to_json, @response.body
       end
 
       def test_render_array_using_implicit_serializer
@@ -142,8 +171,22 @@ module ActionController
       def test_render_array_using_implicit_serializer_and_meta
         get :render_array_using_implicit_serializer_and_meta
 
+        expected = {
+          data: [
+            {
+              name: "Name 1",
+              description: "Description 1",
+              id: assigns(:profiles).first.id.to_s,
+              type: "profiles"
+            }
+          ],
+          meta: {
+            total: 10
+          }
+        }
+
         assert_equal 'application/json', @response.content_type
-        assert_equal '{"data":[{"name":"Name 1","description":"Description 1"}],"meta":{"total":10}}', @response.body
+        assert_equal expected.to_json, @response.body
       end
 
       def test_render_with_cache_enable
diff --git a/test/adapter/json_api/belongs_to_test.rb b/test/adapter/json_api/belongs_to_test.rb
index 38f80800..3ce8074e 100644
--- a/test/adapter/json_api/belongs_to_test.rb
+++ b/test/adapter/json_api/belongs_to_test.rb
@@ -41,6 +41,7 @@ module ActiveModel
             @adapter = ActiveModel::Serializer::Adapter::JsonApi.new(@serializer, include: 'post')
             expected = [{
               id: "42",
+              type: "posts",
               title: 'New Post',
               body: 'Body',
               links: {
@@ -49,12 +50,14 @@ module ActiveModel
                 author: { linkage: { type: "authors", id: "1" } }
               }
             }]
-            assert_equal expected, @adapter.serializable_hash[:linked][:posts]
+            assert_equal expected, @adapter.serializable_hash[:included]
           end
 
           def test_limiting_linked_post_fields
             @adapter = ActiveModel::Serializer::Adapter::JsonApi.new(@serializer, include: 'post', fields: {post: [:title]})
             expected = [{
+              id: "42",
+              type: "posts",
               title: 'New Post',
               links: {
                 comments: { linkage: [ { type: "comments", id: "1" } ] },
@@ -62,7 +65,7 @@ module ActiveModel
                 author: { linkage: { type: "authors", id: "1" } }
               }
             }]
-            assert_equal expected, @adapter.serializable_hash[:linked][:posts]
+            assert_equal expected, @adapter.serializable_hash[:included]
           end
 
           def test_include_nil_author
@@ -102,37 +105,39 @@ module ActiveModel
           def test_include_linked_resources_with_type_name
             serializer = BlogSerializer.new(@blog)
             adapter = ActiveModel::Serializer::Adapter::JsonApi.new(serializer, include: ['writer', 'articles'])
-            linked = adapter.serializable_hash[:linked]
-            expected = {
-              authors: [{
+            linked = adapter.serializable_hash[:included]
+            expected = [
+              {
                 id: "1",
+                type: "authors",
                 name: "Steve K.",
                 links: {
                   posts: { linkage: [] },
                   roles: { linkage: [] },
                   bio: { linkage: nil }
                 }
-              }],
-              posts: [{
+              },{
+                id: "42",
+                type: "posts",
                 title: "New Post",
                 body: "Body",
-                id: "42",
                 links: {
                   comments: { linkage: [ { type: "comments", id: "1" } ] },
                   blog: { linkage: { type: "blogs", id: "999" } },
                   author: { linkage: { type: "authors", id: "1" } }
                 }
               }, {
+                id: "43",
+                type: "posts",
                 title: "Hello!!",
                 body: "Hello, world!!",
-                id: "43",
                 links: {
                   comments: { linkage: [] },
                   blog: { linkage: { type: "blogs", id: "999" } },
                   author: { linkage: nil }
                 }
-              }]
-            }
+              }
+            ]
             assert_equal expected, linked
           end
         end
diff --git a/test/adapter/json_api/collection_test.rb b/test/adapter/json_api/collection_test.rb
index c0216c36..36fb68e2 100644
--- a/test/adapter/json_api/collection_test.rb
+++ b/test/adapter/json_api/collection_test.rb
@@ -27,9 +27,10 @@ module ActiveModel
           def test_include_multiple_posts
             expected = [
               {
+                id: "1",
+                type: "posts",
                 title: "Hello!!",
                 body: "Hello, world!!",
-                id: "1",
                 links: {
                   comments: { linkage: [] },
                   blog: { linkage: { type: "blogs", id: "999" } },
@@ -37,9 +38,10 @@ module ActiveModel
                 }
               },
               {
+                id: "2",
+                type: "posts",
                 title: "New Post",
                 body: "Body",
-                id: "2",
                 links: {
                   comments: { linkage: [] },
                   blog: { linkage: { type: "blogs", id: "999" } },
@@ -56,6 +58,8 @@ module ActiveModel
 
             expected = [
               {
+                id: "1",
+                type: "posts",
                 title: "Hello!!",
                 links: {
                   comments: { linkage: [] },
@@ -64,6 +68,8 @@ module ActiveModel
                 }
               },
               {
+                id: "2",
+                type: "posts",
                 title: "New Post",
                 links: {
                   comments: { linkage: [] },
diff --git a/test/adapter/json_api/has_many_explicit_serializer_test.rb b/test/adapter/json_api/has_many_explicit_serializer_test.rb
index ecebbaa7..4ff53728 100644
--- a/test/adapter/json_api/has_many_explicit_serializer_test.rb
+++ b/test/adapter/json_api/has_many_explicit_serializer_test.rb
@@ -39,25 +39,33 @@ module ActiveModel
             assert_equal(expected, @adapter.serializable_hash[:data][:links][:comments])
           end
 
-          def test_includes_linked_comments
+          def test_includes_linked_data
             # If CommentPreviewSerializer is applied correctly the body text will not be present in the output
             expected = [
               {
                 id: '1',
+                type: 'comments',
                 links: {
                   post: { linkage: { type: 'posts', id: @post.id.to_s } }
                 }
               },
               {
                 id: '2',
+                type: 'comments',
                 links: {
                   post: { linkage: { type: 'posts', id: @post.id.to_s } }
                 }
+              },
+              {
+                id: @author.id.to_s,
+                type: "authors",
+                links: {
+                  posts: { linkage: [ {type: "posts", id: @post.id.to_s } ] }
+                }
               }
             ]
 
-            assert_equal(expected,
-                         @adapter.serializable_hash[:linked][:comments])
+            assert_equal(expected, @adapter.serializable_hash[:included])
           end
 
           def test_includes_author_id
@@ -68,17 +76,6 @@ module ActiveModel
             assert_equal(expected, @adapter.serializable_hash[:data][:links][:author])
           end
 
-          def test_includes_linked_authors
-            expected = [{
-              id: @author.id.to_s,
-              links: {
-                posts: { linkage: [ { type: "posts", id: @post.id.to_s } ] }
-              }
-            }]
-
-            assert_equal(expected, @adapter.serializable_hash[:linked][:authors])
-          end
-
           def test_explicit_serializer_with_null_resource
             @post.author = nil
 
diff --git a/test/adapter/json_api/has_many_test.rb b/test/adapter/json_api/has_many_test.rb
index b520e5b0..cdd4bf3e 100644
--- a/test/adapter/json_api/has_many_test.rb
+++ b/test/adapter/json_api/has_many_test.rb
@@ -42,6 +42,7 @@ module ActiveModel
             @adapter = ActiveModel::Serializer::Adapter::JsonApi.new(@serializer, include: 'comments')
             expected = [{
               id: "1",
+              type: "comments",
               body: 'ZOMG A COMMENT',
               links: {
                 post: { linkage: { type: "posts", id: "1" } },
@@ -49,31 +50,34 @@ module ActiveModel
               }
             }, {
               id: "2",
+              type: "comments",
               body: 'ZOMG ANOTHER COMMENT',
               links: {
                 post: { linkage: { type: "posts", id: "1" } },
                 author: { linkage: nil }
               }
             }]
-            assert_equal expected, @adapter.serializable_hash[:linked][:comments]
+            assert_equal expected, @adapter.serializable_hash[:included]
           end
 
           def test_limit_fields_of_linked_comments
             @adapter = ActiveModel::Serializer::Adapter::JsonApi.new(@serializer, include: 'comments', fields: {comment: [:id]})
             expected = [{
               id: "1",
+              type: "comments",
               links: {
                 post: { linkage: { type: "posts", id: "1" } },
                 author: { linkage: nil }
               }
             }, {
               id: "2",
+              type: "comments",
               links: {
                 post: { linkage: { type: "posts", id: "1" } },
                 author: { linkage: nil }
               }
             }]
-            assert_equal expected, @adapter.serializable_hash[:linked][:comments]
+            assert_equal expected, @adapter.serializable_hash[:included]
           end
 
           def test_no_include_linked_if_comments_is_empty
diff --git a/test/adapter/json_api/has_one_test.rb b/test/adapter/json_api/has_one_test.rb
index 267ec4e5..8847e020 100644
--- a/test/adapter/json_api/has_one_test.rb
+++ b/test/adapter/json_api/has_one_test.rb
@@ -41,6 +41,7 @@ module ActiveModel
             expected = [
               {
                 id: "43",
+                type: "bios",
                 content:"AMS Contributor",
                 links: {
                   author: { linkage: { type: "authors", id: "1" } }
@@ -48,7 +49,7 @@ module ActiveModel
               }
             ]
 
-            assert_equal(expected, @adapter.serializable_hash[:linked][:bios])
+            assert_equal(expected, @adapter.serializable_hash[:included])
           end
         end
       end
diff --git a/test/adapter/json_api/linked_test.rb b/test/adapter/json_api/linked_test.rb
index e85c4b7d..c6fada87 100644
--- a/test/adapter/json_api/linked_test.rb
+++ b/test/adapter/json_api/linked_test.rb
@@ -142,42 +142,41 @@ module ActiveModel
               include: 'author,author.posts'
             )
 
-            expected = {
-              authors: [
-                {
-                  id: "1",
-                  name: "Steve K.",
-                  links: {
-                    posts: { linkage: [ { type: "posts", id: "10"}, { type: "posts", id: "30" }] },
-                    roles: { linkage: [] },
-                    bio: { linkage: { type: "bios", id: "1" }}
-                  }
+            expected = [
+              {
+                id: "1",
+                type: "authors",
+                name: "Steve K.",
+                links: {
+                  posts: { linkage: [ { type: "posts", id: "10"}, { type: "posts", id: "30" }] },
+                  roles: { linkage: [] },
+                  bio: { linkage: { type: "bios", id: "1" }}
                 }
-              ],
-              posts: [
-                {
-                  id: "10",
-                  title: "Hello!!",
-                  body: "Hello, world!!",
-                  links: {
-                    comments: { linkage: [ { type: "comments", id: "1"}, { type: "comments", id: "2" }] },
-                    blog: { linkage: { type: "blogs", id: "999" } },
-                    author: { linkage: { type: "authors", id: "1" } }
-                  }
-                }, {
-                  id: "30",
-                  title: "Yet Another Post",
-                  body: "Body",
-                  links: {
-                    comments: { linkage: [] },
-                    blog: { linkage: { type: "blogs", id: "999" } },
-                    author: { linkage: { type: "authors", id: "1" } }
-                  }
+              }, {
+                id: "10",
+                type: "posts",
+                title: "Hello!!",
+                body: "Hello, world!!",
+                links: {
+                  comments: { linkage: [ { type: "comments", id: "1"}, { type: "comments", id: "2" }] },
+                  blog: { linkage: { type: "blogs", id: "999" } },
+                  author: { linkage: { type: "authors", id: "1" } }
                 }
-              ]
-            }
-            assert_equal expected, adapter.serializable_hash[:linked]
-            assert_equal expected, alt_adapter.serializable_hash[:linked]
+              }, {
+                id: "30",
+                type: "posts",
+                title: "Yet Another Post",
+                body: "Body",
+                links: {
+                  comments: { linkage: [] },
+                  blog: { linkage: { type: "blogs", id: "999" } },
+                  author: { linkage: { type: "authors", id: "1" } }
+                }
+              }
+            ]
+
+            assert_equal expected, adapter.serializable_hash[:included]
+            assert_equal expected, alt_adapter.serializable_hash[:included]
           end
 
           def test_ignore_model_namespace_for_linked_resource_type