gofuzz

Unlike regular tests, only a single fuzz test can be executed using the Go command.

gofuzz allows running multiple or all fuzz tests in a project back to back or in parallel.

Install

go install github.com/koonix/gofuzz@latest

Usage

Usage is similar to running regular tests.

To run fuzz tests of pkg1 and pkg2:

gofuzz ./pkg1 ./dir/pkg2

To run all fuzz tests in the project:

gofuzz ./...

To pass arguments to go test, put them after a --:

gofuzz ./... -- -fuzztime=10s

To configure which fuzz tests to run and the number of tests running in parallel:

gofuzz -run='FuzzFunc1|FuzzFunc2' -parallel=5 ./... -- -fuzztime=10s

Use in GitHub Actions:

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5

      - name: Run tests
        run: go test -v ./...

      - name: Run fuzz tests
        run: go run github.com/koonix/gofuzz@latest ./... -- -fuzztime=30s

Full usage:

Usage: gofuzz [OPTIONS...] [PACKAGES...] [-- GOTESTARGS...]

gofuzz runs multiple Go fuzz tests.

PACKAGES are package patterns, as accepted by the go test command.
GOTESTARGS are extra args passed to the go test command.

Options:
  -C string
    	run as if the program was started in this path (default ".")
  -gotest string
    	command used for running tests, as whitespace-separated args (default "go test")
  -parallel int
    	maximum number of fuzz tests to run simultaneously (default 1)
  -run string
    	run only those fuzz tests matching the regular expression (default ".")