Fuzz testing for canvas using go-fuzz. Pull requests to add more corpora or testers are appreciated.
To run the tests, install go-fuzz:
GO111MODULE=off go get -u github.com/dvyukov/go-fuzz/go-fuzz github.com/dvyukov/go-fuzz/go-fuzz-build
cd $GOPATH/github.com/tdewolff/canvas/tests/font
go-fuzz-build
go-fuzz
If restarts is not close to 1/10000, something is probably wrong. If not finding new corpus for a while, restart the fuzzer.