8dc2499aa6
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package png
|
|
|
|
import (
|
|
"bytes"
|
|
"image"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
func FuzzDecode(f *testing.F) {
|
|
testdata, err := os.ReadDir("../testdata")
|
|
if err != nil {
|
|
f.Fatalf("failed to read testdata directory: %s", err)
|
|
}
|
|
for _, de := range testdata {
|
|
if de.IsDir() || !strings.HasSuffix(de.Name(), ".png") {
|
|
continue
|
|
}
|
|
b, err := os.ReadFile(filepath.Join("../testdata", de.Name()))
|
|
if err != nil {
|
|
f.Fatalf("failed to read testdata: %s", err)
|
|
}
|
|
f.Add(b)
|
|
}
|
|
|
|
f.Fuzz(func(t *testing.T, b []byte) {
|
|
cfg, _, err := image.DecodeConfig(bytes.NewReader(b))
|
|
if err != nil {
|
|
return
|
|
}
|
|
if cfg.Width*cfg.Height > 1e6 {
|
|
return
|
|
}
|
|
img, typ, err := image.Decode(bytes.NewReader(b))
|
|
if err != nil || typ != "png" {
|
|
return
|
|
}
|
|
levels := []CompressionLevel{
|
|
DefaultCompression,
|
|
NoCompression,
|
|
BestSpeed,
|
|
BestCompression,
|
|
}
|
|
for _, l := range levels {
|
|
var w bytes.Buffer
|
|
e := &Encoder{CompressionLevel: l}
|
|
err = e.Encode(&w, img)
|
|
if err != nil {
|
|
t.Fatalf("failed to encode valid image: %s", err)
|
|
}
|
|
img1, err := Decode(&w)
|
|
if err != nil {
|
|
t.Fatalf("failed to decode roundtripped image: %s", err)
|
|
}
|
|
got := img1.Bounds()
|
|
want := img.Bounds()
|
|
if !got.Eq(want) {
|
|
t.Fatalf("roundtripped image bounds have changed, got: %s, want: %s", got, want)
|
|
}
|
|
}
|
|
})
|
|
}
|