before(:each) do
          allow(AssignmentQuestionnaire).to receive(:where).with(assignment_id: assignment.id).and_return([])
          allow(AssignmentQuestionnaire).to receive(:where).with(user_id: anything, assignment_id: nil, questionnaire_id: nil).and_return([])
          allow(AssignmentQuestionnaire).to receive(:new).and_return(assignment_questionnaire1)