When developers talk about “test coverage” they are typically talking about how many lines of code are executed by their test suite. This is a simple calculation: what percentage of our code was run by our tests? We don’t want to accidentally break our code later so having strong test coverage is important.

American fuzzy lop is a security-oriented fuzzer that employs a novel type of compile-time instrumentation and genetic algorithms to automatically discover clean, interesting test cases that trigger new internal states in the targeted binary. This substantially improves the functional coverage for the fuzzed code. The compact synthesized corpora produced by the tool are also useful for seeding other, more labor- or resource-intensive testing regimes down the road.

one file unit testing

I want to do some low-resources testing and for that I need to have 90% of the free memory full.

How can I do this on a *nix system?