it 'true if review is done by teaching assistant' do
      allow(Response).to receive(:find).with(1).and_return(response)
      allow(ResponseMap).to receive(:find).with(1).and_return(review_response_map)
      allow(Participant).to receive(:find).with(1).and_return(participant)
      allow(User).to receive(:find).with(1).and_return(user)