Integration with cargo-fuzz

[elichai]

A lot of the tests I have are using libfuzzer/cargo-fuzz to create test curposes, would be nice if I could run those under mutagen, obviously I could write a test function that runs them and then run mutagen, but I have a lot of fuzzers and it will require adding a lot of fuzzing logic code into my crate's tests suite, so it would be nice if I could plug cargo-mutagen into the fuzzer so it will run the fuzzing corpuses under mutations

[samuelpilz]

Could you elaborate a bit more? Some questions:

• what output do you expect? do you want to know which mutations would result in a failure of cargo-fuzz?
• which tool would be the "outer" one? cargo fuzz --mutagen or cargo mutagen --with-cargo-fuzz
• could either tool use the other tool as a lib? or would either tool call the other tool as command?
• who would be responsible to detect whether mutations result in infinite loops?

[brunoerg]

do you want to know which mutations would result in a failure of cargo-fuzz?

As far as I've used mutagen, it basically test the mutants with cargo test, right? So, I suppose @elichai wants to test the mutants using fuzzing e.g. by running only with the cases from the corpus or limiting the execution time like "Run fuzzing for 3 minutes and check if the mutant was killed").