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this post was submitted on 09 Jul 2023
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Programming
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Formally? No, this is basically impossible by Rice's Theorem. There is not even a guarantee that if you have 100% test coverage, the program is good (the tests could be flawed).
This is just a natural limitation of turing completeness. You can't decide these properties while also having full computational power. In order to decide such things, you need a less powerful mode of computation (something not turing complete) that can be analyzed more thoroughly and with more guarantees.
That makes sense, thank you. Yes, it's specifically "test quality" I'm looking to measure, as 100% coverage is effectively meaningless if the tests are poor.
Yea I'm afraid the only real way to "measure" that is to read through the tests and the code and make a good ol human value judgement on the state of the code and tests. But it won't give you a number.