context 'when the question does not have text' do
      it 'returns "Please make sure all questions have text"' do
        allow(true_false).to receive(:txt).and_return('')
        questions = { '1' => { txt: 'question text', iscorrect: '1' }, '2' => { txt: 'question text', iscorrect: '0' } }
        expect(true_false.isvalid(questions)).to eq('Please make sure all questions have text')