moving post answer routes back

test/controllers/candidate_controller_test.rb

@@ -53,7 +53,7 @@ class CandidateControllerTest < ActionDispatch::IntegrationTest
   test "should get flash message on bad radio response" do
     setup_auth candidates(:martha)
     qid = questions(:fed1).id
-    post post_radio_url, params: { answer: { question_id: qid, radio: nil } }
+    post post_answer_path, params: { answer: { question_id: qid, radio: nil } }
 
     assert_response :success
     assert session[:test_id].present?