Is slicing or mutation testing better at automatically identifying weaknesses in your test suite?

Introduction Are your tests as effective as you think they are? While statement coverage is a common metric for test suite quality, it often doesn’t tell the whole story. High coverage scores can create a false sense of security, leaving critical “gaps” in your testing strategy. In the paper (Maton, Kapfhammer, and McMinn 2025) , my colleagues and I investigate how to identify an “oracle gap” that…