Refactor adapters to implement support for array serialization

test/action_controller/serialization_test.rb

@@ -23,6 +23,14 @@ module ActionController
         ensure
           ActiveModel::Serializer.config.adapter = old_adapter
         end
+
+        def render_array_using_implicit_serializer
+          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
+        end
       end
 
       tests MyController
@@ -46,7 +54,25 @@ module ActionController
         get :render_using_default_adapter_root
 
         assert_equal 'application/json', @response.content_type
-        assert_equal '{"profile":{"name":"Name 1","description":"Description 1"}}', @response.body
+        assert_equal '{"profiles":{"name":"Name 1","description":"Description 1"}}', @response.body
+      end
+
+      def test_render_array_using_implicit_serializer
+        get :render_array_using_implicit_serializer
+        assert_equal 'application/json', @response.content_type
+
+        expected = [
+          {
+            name: 'Name 1',
+            description: 'Description 1',
+          },
+          {
+            name: 'Name 2',
+            description: 'Description 2',
+          }
+        ]
+
+        assert_equal expected.to_json, @response.body
       end
     end
   end

test/adapter/json/collection_test.rb

@@ -0,0 +1,28 @@
+require 'test_helper'
+
+module ActiveModel
+  class Serializer
+    class Adapter
+      class Json
+        class Collection < Minitest::Test
+          def setup
+            @first_post = Post.new(id: 1, title: 'Hello!!', body: 'Hello, world!!')
+            @second_post = Post.new(id: 2, title: 'New Post', body: 'Body')
+            @first_post.comments = []
+            @second_post.comments = []
+
+            @serializer = ArraySerializer.new([@first_post, @second_post])
+            @adapter = ActiveModel::Serializer::Adapter::Json.new(@serializer)
+          end
+
+          def test_include_multiple_posts
+            assert_equal([
+                           {title: "Hello!!", body: "Hello, world!!", id: 1, comments: []},
+                           {title: "New Post", body: "Body", id: 2, comments: []}
+                         ], @adapter.serializable_hash)
+          end
+        end
+      end
+    end
+  end
+end

test/adapter/json_api/belongs_to_test.rb

@@ -16,7 +16,7 @@ module ActiveModel
           end
 
           def test_includes_post_id
-            assert_equal(42, @adapter.serializable_hash[:links][:post])
+            assert_equal(42, @adapter.serializable_hash[:comments][:links][:post])
           end
 
           def test_includes_linked_post

test/adapter/json_api/collection_test.rb

@@ -0,0 +1,28 @@
+require 'test_helper'
+
+module ActiveModel
+  class Serializer
+    class Adapter
+      class JsonApi
+        class Collection < Minitest::Test
+          def setup
+            @first_post = Post.new(id: 1, title: 'Hello!!', body: 'Hello, world!!')
+            @second_post = Post.new(id: 2, title: 'New Post', body: 'Body')
+            @first_post.comments = []
+            @second_post.comments = []
+
+            @serializer = ArraySerializer.new([@first_post, @second_post])
+            @adapter = ActiveModel::Serializer::Adapter::JsonApi.new(@serializer)
+          end
+
+          def test_include_multiple_posts
+            assert_equal([
+                           {title: "Hello!!", body: "Hello, world!!", id: 1, links: {comments: []}},
+                           {title: "New Post", body: "Body", id: 2, links: {comments: []}}
+                         ], @adapter.serializable_hash[:posts])
+          end
+        end
+      end
+    end
+  end
+end

test/adapter/json_api/has_many_embed_ids.rb

@@ -18,7 +18,7 @@ module ActiveModel
           end
 
           def test_includes_comment_ids
-            assert_equal([1, 2], @adapter.serializable_hash[:links][:posts])
+            assert_equal([1, 2], @adapter.serializable_hash[:authors][:links][:posts])
           end
 
           def test_no_includes_linked_comments

test/adapter/json_api/has_many_test.rb

@@ -18,7 +18,7 @@ module ActiveModel
           end
 
           def test_includes_comment_ids
-            assert_equal([1, 2], @adapter.serializable_hash[:links][:comments])
+            assert_equal([1, 2], @adapter.serializable_hash[:posts][:links][:comments])
           end
 
           def test_includes_linked_comments

test/array_serializer_test.rb

@@ -5,7 +5,7 @@ module ActiveModel
     class ArraySerializerTest < Minitest::Test
       def setup
         @comment = Comment.new
-        @post= Post.new
+        @post = Post.new
         @serializer = ArraySerializer.new([@comment, @post])
       end
 
@@ -13,7 +13,7 @@ module ActiveModel
         assert_respond_to @serializer, :each
       end
 
-      def test_each_object_should_be_serializer_with_appropriate_serializer
+      def test_each_object_should_be_serialized_with_appropriate_serializer
         serializers =  @serializer.to_a
 
         assert_kind_of CommentSerializer, serializers.first