worker tests

app/workers/candidate_quiz.rb

@@ -6,7 +6,8 @@ class CandidateQuiz
   end
 
   def fetch_question qid
-    raw_quiz(qid).each_with_object([]) { |row, quiz| quiz << CandidateQuizQuestion.new(row) }
+    questions = raw_quiz(qid).each_with_object([]) { |row, quiz| quiz << CandidateQuizQuestion.new(row) }
+    questions.first
   end
 
   def build_my_quiz