Add type property to project autocomplete members

app/services/concerns/users/participable_service.rb

@@ -11,7 +11,7 @@ module Users
     def noteable_owner
       return [] unless noteable && noteable.author.present?
 
-      [as_hash(noteable.author)]
+      [user_as_hash(noteable.author)]
     end
 
     def participants_in_noteable
@@ -23,21 +23,24 @@ module Users
 
     def sorted(users)
       users.uniq.to_a.compact.sort_by(&:username).map do |user|
-        as_hash(user)
+        user_as_hash(user)
       end
     end
 
     def groups
       current_user.authorized_groups.sort_by(&:path).map do |group|
-        count = group.users.count
-        { username: group.full_path, name: group.full_name, count: count, avatar_url: group.avatar_url }
+        group_as_hash(group)
       end
     end
 
     private
 
-    def as_hash(user)
-      { username: user.username, name: user.name, avatar_url: user.avatar_url }
+    def user_as_hash(user)
+      { type: user.class.name, username: user.username, name: user.name, avatar_url: user.avatar_url }
+    end
+
+    def group_as_hash(group)
+      { type: group.class.name, username: group.full_path, name: group.full_name, avatar_url: group.avatar_url, count: group.users.count }
     end
   end
 end

spec/controllers/projects/autocomplete_sources_controller_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Projects::AutocompleteSourcesController do
+  set(:group) { create(:group) }
+  set(:project) { create(:project, namespace: group) }
+  set(:issue) { create(:issue, project: project) }
+  set(:user) { create(:user) }
+
+  describe 'GET members' do
+    before do
+      group.add_owner(user)
+      sign_in(user)
+    end
+
+    it 'returns an array of member object' do
+      get :members, format: :json, params: { namespace_id: group.path, project_id: project.path, type: issue.class.name, type_id: issue.id }
+
+      all = json_response.find {|member| member["username"] == 'all'}
+      the_group = json_response.find {|member| member["username"] == group.full_path}
+      the_user = json_response.find {|member| member["username"] == user.username}
+
+      expect(all.symbolize_keys).to include(username: 'all',
+                                            name: 'All Project and Group Members',
+                                            count: 1)
+
+      expect(the_group.symbolize_keys).to include(type: group.class.name,
+                                                  name: group.full_name,
+                                                  avatar_url: group.avatar_url,
+                                                  count: 1)
+
+      expect(the_user.symbolize_keys).to include(type: user.class.name,
+                                                 name: user.name,
+                                                 avatar_url: user.avatar_url)
+    end
+  end
+end