One strategy is to ask questions in a more positive/balanced way. e.g.: "Do you unit test?" is a yes/no question, and if the answer is no, it doesn't leave much room to give a positive answer to the question. Compare this with "What is your testing strategy; what do you think you do well, and where could you improve?" gives you at least a set of tradeoffs.
Basically, you want the interviewer to highlight potential problem areas, without speaking about their organization in a way where they can't say anything positive about what they do. You can find these details out without giving a laundry list of explicit red flag type questions.
Basically, you want the interviewer to highlight potential problem areas, without speaking about their organization in a way where they can't say anything positive about what they do. You can find these details out without giving a laundry list of explicit red flag type questions.