1890a371.gettysburg.txt-100x.zst Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal. Now we are engaged in a great Civil War, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of that field, as a final resting place for those who here gave their lives...

    func.return %0 : tensor<100x!quant.uniform<i8:f32, 2.000000e-01:-3>>
  }

! go test -run=FuzzWithNilPanic -fuzz=FuzzWithNilPanic -fuzztime=100x -fuzzminimizetime=1000x
stdout 'testdata[/\\]fuzz[/\\]FuzzWithNilPanic[/\\]'
stdout 'panic called with nil argument|test executed panic.nil. or runtime.Goexit'
go run check_testdata.go FuzzWithNilPanic

! go test -run=FuzzWithGoexit -fuzz=FuzzWithGoexit -fuzztime=100x -fuzzminimizetime=1000x
stdout 'testdata[/\\]fuzz[/\\]FuzzWithGoexit[/\\]'
stdout 'runtime.Goexit'

Each one is a Zstandard compressed file named as hash.arbitrary-name.zst,
where hash is the first eight hexadecimal digits of the SHA256 hash
of the expected uncompressed content:

	zstd -d < 1890a371.gettysburg.txt-100x.zst | sha256sum | head -c 8
	1890a371

# had an execution limit, causing it to deadlock and sit in the coordinator
# loop indefinitely, failing to exit once the limit had been exhausted.

go test -fuzz=FuzzA -fuzztime=100x -parallel=1

-- go.mod --
module m

go 1.16
-- fuzz_test.go --
package fuzz_test

import (
	"fmt"
	"testing"
)

func FuzzA(f *testing.F) {
	f.Add([]byte("seed"))
	i := 0

[!fuzz] skip
[short] skip
env GOCACHE=$WORK/cache

go test -fuzz=FuzzA -fuzztime=100x fuzz_setenv_test.go

-- fuzz_setenv_test.go --
package fuzz

import (
  "flag"
  "os"
  "testing"
)

func FuzzA(f *testing.F) {
  if s := os.Getenv("TEST_FUZZ_SETENV_A"); isWorker() && s == "" {
    f.Fatal("environment variable not set")
  } else if !isWorker() && s != "" {
    f.Fatal("environment variable already set")
  }

# use separate log files. check_logs.go verifies that the coordinator only
# tests seed values and the worker tests mutated values on the fuzz target.

[short] skip
env GOCACHE=$WORK/cache

go test -fuzz=FuzzA -fuzztime=100x -parallel=1 -log=fuzz
go run check_logs.go fuzz fuzz.worker

# TODO(b/181800488): remove -parallel=1, here and below. For now, when a
# crash is found, all workers keep running, wasting resources and reducing

! go test -run=FuzzDeadline -timeout=1s -wantdeadline=false
go test -run=FuzzDeadline -timeout=1s -wantdeadline=true
go test -fuzz=FuzzDeadline -timeout=0 -fuzztime=1s -wantdeadline=false
go test -fuzz=FuzzDeadline -timeout=0 -fuzztime=100x -wantdeadline=false

-- go.mod --
module fuzz

go 1.16
-- fuzz_deadline_test.go --
package fuzz_test

import (
	"flag"
	"testing"
)

env GOCACHE=$WORK/cache

# Fuzz cache should not exist after a regular test run.
go test .
exists $GOCACHE
! exists $GOCACHE/fuzz

# Fuzzing should write interesting values to the cache.
go test -fuzz=FuzzY -fuzztime=100x .
go run ./contains_files $GOCACHE/fuzz/example.com/y/FuzzY

# 'go clean -cache' should not delete the fuzz cache.
go clean -cache
exists $GOCACHE/fuzz

go clean -fuzzcache

# Test that minimization can be cancelled by fuzzminimizetime and the latest
# crash will still be logged and written to testdata.
! go test -fuzz=FuzzMinimizerRecoverable -run=FuzzMinimizerRecoverable -fuzztime=100x -fuzzminimizetime=1x .
! stdout '^ok'
stdout 'testdata[/\\]fuzz[/\\]FuzzMinimizerRecoverable[/\\]'
! stdout 'got the minimum size!'  # it shouldn't have had enough time to minimize it
stdout FAIL