Merge pull request #22 from dxw/234-linking-to-in-progress-task

234 API exposes the latest submission for a task

app/serializable/serializable_task.rb

@@ -1,6 +1,7 @@
 class SerializableTask < JSONAPI::Serializable::Resource
   type 'tasks'
 
+  has_one :latest_submission
   has_many :submissions
   belongs_to :framework
 

spec/requests/v1/tasks_spec.rb

@@ -61,7 +61,7 @@
       expect(json['data'][2]).to have_attribute(:status).with_value('in_progress')
     end
 
-    it 'can optionally return included models' do
+    it 'can optionally include submissions' do
       task = FactoryBot.create(:task)
       submission = FactoryBot.create(:submission, task: task, aasm_state: 'pending')
 
@@ -75,6 +75,22 @@
       expect(json['included'][0])
         .to have_attribute(:status).with_value('pending')
     end
+
+    it 'can optionally include the latest_submission' do
+      task = FactoryBot.create(:task)
+      submission = FactoryBot.create(:submission, task: task, aasm_state: 'pending')
+
+      get '/v1/tasks?include=latest_submission'
+
+      expect(response).to be_successful
+      expect(json['data'][0]).to have_id(task.id)
+      expect(json['data'][0])
+        .to have_relationship(:latest_submission)
+        .with_data('id' => submission.id, 'type' => 'submissions')
+
+      expect(json['included'][0])
+        .to have_attribute(:status).with_value('pending')
+    end
   end
 
   describe 'GET /tasks?filter[status]=' do