Fuzz Testing

GL-920 · also Fuzzing

Automated testing that feeds a program large volumes of generated, malformed or unexpected input and watches for crashes, hangs, leaks or broken invariants, to find defects and security flaws that hand-written cases miss.

Coverage-guided fuzzers keep the inputs that reach new code paths and often run continuously. Related to property-based testing, which generates inputs to check stated properties rather than to break the program.