ref: 02efadc2430a86af17d4a0e8c069bda637879aa6
dir: /resources/image_test.go/
// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resources
import (
"fmt"
"image"
"io/ioutil"
"math/big"
"math/rand"
"os"
"path"
"path/filepath"
"runtime"
"strconv"
"sync"
"testing"
"time"
"github.com/spf13/afero"
"github.com/disintegration/gift"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/media"
"github.com/gohugoio/hugo/resources/images"
"github.com/gohugoio/hugo/resources/resource"
"github.com/google/go-cmp/cmp"
"github.com/gohugoio/hugo/htesting/hqt"
qt "github.com/frankban/quicktest"
)
var eq = qt.CmpEquals(
cmp.Comparer(func(p1, p2 *resourceAdapter) bool {
return p1.resourceAdapterInner == p2.resourceAdapterInner
}),
cmp.Comparer(func(p1, p2 os.FileInfo) bool {
return p1.Name() == p2.Name() && p1.Size() == p2.Size() && p1.IsDir() == p2.IsDir()
}),
cmp.Comparer(func(p1, p2 *genericResource) bool { return p1 == p2 }),
cmp.Comparer(func(m1, m2 media.Type) bool {
return m1.Type() == m2.Type()
}),
cmp.Comparer(
func(v1, v2 *big.Rat) bool {
return v1.RatString() == v2.RatString()
},
),
cmp.Comparer(func(v1, v2 time.Time) bool {
return v1.Unix() == v2.Unix()
}),
)
func TestImageTransformBasic(t *testing.T) {
c := qt.New(t)
image := fetchSunset(c)
fileCache := image.(specProvider).getSpec().FileCaches.ImageCache().Fs
assertWidthHeight := func(img resource.Image, w, h int) {
c.Helper()
c.Assert(img, qt.Not(qt.IsNil))
c.Assert(img.Width(), qt.Equals, w)
c.Assert(img.Height(), qt.Equals, h)
}
c.Assert(image.RelPermalink(), qt.Equals, "/a/sunset.jpg")
c.Assert(image.ResourceType(), qt.Equals, "image")
assertWidthHeight(image, 900, 562)
resized, err := image.Resize("300x200")
c.Assert(err, qt.IsNil)
c.Assert(image != resized, qt.Equals, true)
c.Assert(image, qt.Not(eq), resized)
assertWidthHeight(resized, 300, 200)
assertWidthHeight(image, 900, 562)
resized0x, err := image.Resize("x200")
c.Assert(err, qt.IsNil)
assertWidthHeight(resized0x, 320, 200)
assertFileCache(c, fileCache, path.Base(resized0x.RelPermalink()), 320, 200)
resizedx0, err := image.Resize("200x")
c.Assert(err, qt.IsNil)
assertWidthHeight(resizedx0, 200, 125)
assertFileCache(c, fileCache, path.Base(resizedx0.RelPermalink()), 200, 125)
resizedAndRotated, err := image.Resize("x200 r90")
c.Assert(err, qt.IsNil)
assertWidthHeight(resizedAndRotated, 125, 200)
assertWidthHeight(resized, 300, 200)
c.Assert(resized.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_300x200_resize_q68_linear.jpg")
fitted, err := resized.Fit("50x50")
c.Assert(err, qt.IsNil)
c.Assert(fitted.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_625708021e2bb281c9f1002f88e4753f.jpg")
assertWidthHeight(fitted, 50, 33)
// Check the MD5 key threshold
fittedAgain, _ := fitted.Fit("10x20")
fittedAgain, err = fittedAgain.Fit("10x20")
c.Assert(err, qt.IsNil)
c.Assert(fittedAgain.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_3f65ba24dc2b7fba0f56d7f104519157.jpg")
assertWidthHeight(fittedAgain, 10, 7)
filled, err := image.Fill("200x100 bottomLeft")
c.Assert(err, qt.IsNil)
c.Assert(filled.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x100_fill_q68_linear_bottomleft.jpg")
assertWidthHeight(filled, 200, 100)
smart, err := image.Fill("200x100 smart")
c.Assert(err, qt.IsNil)
c.Assert(smart.RelPermalink(), qt.Equals, fmt.Sprintf("/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x100_fill_q68_linear_smart%d.jpg", 1))
assertWidthHeight(smart, 200, 100)
// Check cache
filledAgain, err := image.Fill("200x100 bottomLeft")
c.Assert(err, qt.IsNil)
c.Assert(filled, eq, filledAgain)
}
func TestImageTransformFormat(t *testing.T) {
c := qt.New(t)
image := fetchSunset(c)
fileCache := image.(specProvider).getSpec().FileCaches.ImageCache().Fs
assertExtWidthHeight := func(img resource.Image, ext string, w, h int) {
c.Helper()
c.Assert(img, qt.Not(qt.IsNil))
c.Assert(helpers.Ext(img.RelPermalink()), qt.Equals, ext)
c.Assert(img.Width(), qt.Equals, w)
c.Assert(img.Height(), qt.Equals, h)
}
c.Assert(image.RelPermalink(), qt.Equals, "/a/sunset.jpg")
c.Assert(image.ResourceType(), qt.Equals, "image")
assertExtWidthHeight(image, ".jpg", 900, 562)
imagePng, err := image.Resize("450x png")
c.Assert(err, qt.IsNil)
c.Assert(imagePng.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_450x0_resize_linear.png")
c.Assert(imagePng.ResourceType(), qt.Equals, "image")
assertExtWidthHeight(imagePng, ".png", 450, 281)
c.Assert(imagePng.Name(), qt.Equals, "sunset.jpg")
c.Assert(imagePng.MediaType().String(), qt.Equals, "image/png")
assertFileCache(c, fileCache, path.Base(imagePng.RelPermalink()), 450, 281)
imageGif, err := image.Resize("225x gif")
c.Assert(err, qt.IsNil)
c.Assert(imageGif.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_225x0_resize_linear.gif")
c.Assert(imageGif.ResourceType(), qt.Equals, "image")
assertExtWidthHeight(imageGif, ".gif", 225, 141)
c.Assert(imageGif.Name(), qt.Equals, "sunset.jpg")
c.Assert(imageGif.MediaType().String(), qt.Equals, "image/gif")
assertFileCache(c, fileCache, path.Base(imageGif.RelPermalink()), 225, 141)
}
// https://github.com/gohugoio/hugo/issues/4261
func TestImageTransformLongFilename(t *testing.T) {
c := qt.New(t)
image := fetchImage(c, "1234567890qwertyuiopasdfghjklzxcvbnm5to6eeeeee7via8eleph.jpg")
c.Assert(image, qt.Not(qt.IsNil))
resized, err := image.Resize("200x")
c.Assert(err, qt.IsNil)
c.Assert(resized, qt.Not(qt.IsNil))
c.Assert(resized.Width(), qt.Equals, 200)
c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_65b757a6e14debeae720fe8831f0a9bc.jpg")
resized, err = resized.Resize("100x")
c.Assert(err, qt.IsNil)
c.Assert(resized, qt.Not(qt.IsNil))
c.Assert(resized.Width(), qt.Equals, 100)
c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_c876768085288f41211f768147ba2647.jpg")
}
// Issue 6137
func TestImageTransformUppercaseExt(t *testing.T) {
c := qt.New(t)
image := fetchImage(c, "sunrise.JPG")
resized, err := image.Resize("200x")
c.Assert(err, qt.IsNil)
c.Assert(resized, qt.Not(qt.IsNil))
c.Assert(resized.Width(), qt.Equals, 200)
}
// https://github.com/gohugoio/hugo/issues/5730
func TestImagePermalinkPublishOrder(t *testing.T) {
for _, checkOriginalFirst := range []bool{true, false} {
name := "OriginalFirst"
if !checkOriginalFirst {
name = "ResizedFirst"
}
t.Run(name, func(t *testing.T) {
c := qt.New(t)
spec, workDir := newTestResourceOsFs(c)
defer func() {
os.Remove(workDir)
}()
check1 := func(img resource.Image) {
resizedLink := "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_100x50_resize_q75_box.jpg"
c.Assert(img.RelPermalink(), qt.Equals, resizedLink)
assertImageFile(c, spec.PublishFs, resizedLink, 100, 50)
}
check2 := func(img resource.Image) {
c.Assert(img.RelPermalink(), qt.Equals, "/a/sunset.jpg")
assertImageFile(c, spec.PublishFs, "a/sunset.jpg", 900, 562)
}
orignal := fetchImageForSpec(spec, c, "sunset.jpg")
c.Assert(orignal, qt.Not(qt.IsNil))
if checkOriginalFirst {
check2(orignal)
}
resized, err := orignal.Resize("100x50")
c.Assert(err, qt.IsNil)
check1(resized.(resource.Image))
if !checkOriginalFirst {
check2(orignal)
}
})
}
}
func TestImageTransformConcurrent(t *testing.T) {
var wg sync.WaitGroup
c := qt.New(t)
spec, workDir := newTestResourceOsFs(c)
defer func() {
os.Remove(workDir)
}()
image := fetchImageForSpec(spec, c, "sunset.jpg")
for i := 0; i < 4; i++ {
wg.Add(1)
go func(id int) {
defer wg.Done()
for j := 0; j < 5; j++ {
img := image
for k := 0; k < 2; k++ {
r1, err := img.Resize(fmt.Sprintf("%dx", id-k))
if err != nil {
t.Error(err)
}
if r1.Width() != id-k {
t.Errorf("Width: %d:%d", r1.Width(), j)
}
r2, err := r1.Resize(fmt.Sprintf("%dx", id-k-1))
if err != nil {
t.Error(err)
}
img = r2
}
}
}(i + 20)
}
wg.Wait()
}
func TestImageWithMetadata(t *testing.T) {
c := qt.New(t)
image := fetchSunset(c)
meta := []map[string]interface{}{
{
"title": "My Sunset",
"name": "Sunset #:counter",
"src": "*.jpg",
},
}
c.Assert(AssignMetadata(meta, image), qt.IsNil)
c.Assert(image.Name(), qt.Equals, "Sunset #1")
resized, err := image.Resize("200x")
c.Assert(err, qt.IsNil)
c.Assert(resized.Name(), qt.Equals, "Sunset #1")
}
func TestImageResize8BitPNG(t *testing.T) {
c := qt.New(t)
image := fetchImage(c, "gohugoio.png")
c.Assert(image.MediaType().Type(), qt.Equals, "image/png")
c.Assert(image.RelPermalink(), qt.Equals, "/a/gohugoio.png")
c.Assert(image.ResourceType(), qt.Equals, "image")
resized, err := image.Resize("800x")
c.Assert(err, qt.IsNil)
c.Assert(resized.MediaType().Type(), qt.Equals, "image/png")
c.Assert(resized.RelPermalink(), qt.Equals, "/a/gohugoio_hu0e1b9e4a4be4d6f86c7b37b9ccce3fbc_73886_800x0_resize_linear_2.png")
c.Assert(resized.Width(), qt.Equals, 800)
}
func TestImageResizeInSubPath(t *testing.T) {
c := qt.New(t)
image := fetchImage(c, "sub/gohugoio2.png")
c.Assert(image.MediaType(), eq, media.PNGType)
c.Assert(image.RelPermalink(), qt.Equals, "/a/sub/gohugoio2.png")
c.Assert(image.ResourceType(), qt.Equals, "image")
resized, err := image.Resize("101x101")
c.Assert(err, qt.IsNil)
c.Assert(resized.MediaType().Type(), qt.Equals, "image/png")
c.Assert(resized.RelPermalink(), qt.Equals, "/a/sub/gohugoio2_hu0e1b9e4a4be4d6f86c7b37b9ccce3fbc_73886_101x101_resize_linear_2.png")
c.Assert(resized.Width(), qt.Equals, 101)
publishedImageFilename := filepath.Clean(resized.RelPermalink())
spec := image.(specProvider).getSpec()
assertImageFile(c, spec.BaseFs.PublishFs, publishedImageFilename, 101, 101)
c.Assert(spec.BaseFs.PublishFs.Remove(publishedImageFilename), qt.IsNil)
// Cleare mem cache to simulate reading from the file cache.
spec.imageCache.clear()
resizedAgain, err := image.Resize("101x101")
c.Assert(err, qt.IsNil)
c.Assert(resizedAgain.RelPermalink(), qt.Equals, "/a/sub/gohugoio2_hu0e1b9e4a4be4d6f86c7b37b9ccce3fbc_73886_101x101_resize_linear_2.png")
c.Assert(resizedAgain.Width(), qt.Equals, 101)
assertImageFile(c, image.(specProvider).getSpec().BaseFs.PublishFs, publishedImageFilename, 101, 101)
}
func TestSVGImage(t *testing.T) {
c := qt.New(t)
spec := newTestResourceSpec(specDescriptor{c: c})
svg := fetchResourceForSpec(spec, c, "circle.svg")
c.Assert(svg, qt.Not(qt.IsNil))
}
func TestSVGImageContent(t *testing.T) {
c := qt.New(t)
spec := newTestResourceSpec(specDescriptor{c: c})
svg := fetchResourceForSpec(spec, c, "circle.svg")
c.Assert(svg, qt.Not(qt.IsNil))
content, err := svg.Content()
c.Assert(err, qt.IsNil)
c.Assert(content, hqt.IsSameType, "")
c.Assert(content.(string), qt.Contains, `<svg height="100" width="100">`)
}
func TestImageExif(t *testing.T) {
c := qt.New(t)
fs := afero.NewMemMapFs()
spec := newTestResourceSpec(specDescriptor{fs: fs, c: c})
image := fetchResourceForSpec(spec, c, "sunset.jpg").(resource.Image)
getAndCheckExif := func(c *qt.C, image resource.Image) {
x, err := image.Exif()
c.Assert(err, qt.IsNil)
c.Assert(x, qt.Not(qt.IsNil))
c.Assert(x.Date.Format("2006-01-02"), qt.Equals, "2017-10-27")
// Malaga: https://goo.gl/taazZy
c.Assert(x.Lat, qt.Equals, float64(36.59744166666667))
c.Assert(x.Long, qt.Equals, float64(-4.50846))
v, found := x.Tags["LensModel"]
c.Assert(found, qt.Equals, true)
lensModel, ok := v.(string)
c.Assert(ok, qt.Equals, true)
c.Assert(lensModel, qt.Equals, "smc PENTAX-DA* 16-50mm F2.8 ED AL [IF] SDM")
resized, _ := image.Resize("300x200")
x2, _ := resized.Exif()
c.Assert(x2, eq, x)
}
getAndCheckExif(c, image)
image = fetchResourceForSpec(spec, c, "sunset.jpg").(resource.Image)
// This will read from file cache.
getAndCheckExif(c, image)
}
func BenchmarkImageExif(b *testing.B) {
getImages := func(c *qt.C, b *testing.B, fs afero.Fs) []resource.Image {
spec := newTestResourceSpec(specDescriptor{fs: fs, c: c})
images := make([]resource.Image, b.N)
for i := 0; i < b.N; i++ {
images[i] = fetchResourceForSpec(spec, c, "sunset.jpg", strconv.Itoa(i)).(resource.Image)
}
return images
}
getAndCheckExif := func(c *qt.C, image resource.Image) {
x, err := image.Exif()
c.Assert(err, qt.IsNil)
c.Assert(x, qt.Not(qt.IsNil))
c.Assert(x.Long, qt.Equals, float64(-4.50846))
}
b.Run("Cold cache", func(b *testing.B) {
b.StopTimer()
c := qt.New(b)
images := getImages(c, b, afero.NewMemMapFs())
b.StartTimer()
for i := 0; i < b.N; i++ {
getAndCheckExif(c, images[i])
}
})
b.Run("Cold cache, 10", func(b *testing.B) {
b.StopTimer()
c := qt.New(b)
images := getImages(c, b, afero.NewMemMapFs())
b.StartTimer()
for i := 0; i < b.N; i++ {
for j := 0; j < 10; j++ {
getAndCheckExif(c, images[i])
}
}
})
b.Run("Warm cache", func(b *testing.B) {
b.StopTimer()
c := qt.New(b)
fs := afero.NewMemMapFs()
images := getImages(c, b, fs)
for i := 0; i < b.N; i++ {
getAndCheckExif(c, images[i])
}
images = getImages(c, b, fs)
b.StartTimer()
for i := 0; i < b.N; i++ {
getAndCheckExif(c, images[i])
}
})
}
// usesFMA indicates whether "fused multiply and add" (FMA) instruction is
// used. The command "grep FMADD go/test/codegen/floats.go" can help keep
// the FMA-using architecture list updated.
var usesFMA = runtime.GOARCH == "s390x" ||
runtime.GOARCH == "ppc64" ||
runtime.GOARCH == "ppc64le" ||
runtime.GOARCH == "arm64"
// goldenEqual compares two NRGBA images. It is used in golden tests only.
// A small tolerance is allowed on architectures using "fused multiply and add"
// (FMA) instruction to accommodate for floating-point rounding differences
// with control golden images that were generated on amd64 architecture.
// See https://golang.org/ref/spec#Floating_point_operators
// and https://github.com/gohugoio/hugo/issues/6387 for more information.
//
// Borrowed from https://github.com/disintegration/gift/blob/a999ff8d5226e5ab14b64a94fca07c4ac3f357cf/gift_test.go#L598-L625
// Copyright (c) 2014-2019 Grigory Dryapak
// Licensed under the MIT License.
func goldenEqual(img1, img2 *image.NRGBA) bool {
maxDiff := 0
if usesFMA {
maxDiff = 1
}
if !img1.Rect.Eq(img2.Rect) {
return false
}
if len(img1.Pix) != len(img2.Pix) {
return false
}
for i := 0; i < len(img1.Pix); i++ {
diff := int(img1.Pix[i]) - int(img2.Pix[i])
if diff < 0 {
diff = -diff
}
if diff > maxDiff {
return false
}
}
return true
}
func TestImageOperationsGolden(t *testing.T) {
c := qt.New(t)
c.Parallel()
devMode := false
testImages := []string{"sunset.jpg", "gohugoio8.png", "gohugoio24.png"}
spec, workDir := newTestResourceOsFs(c)
defer func() {
if !devMode {
os.Remove(workDir)
}
}()
if devMode {
fmt.Println(workDir)
}
// Test PNGs with alpha channel.
for _, img := range []string{"gopher-hero8.png", "gradient-circle.png"} {
orig := fetchImageForSpec(spec, c, img)
for _, resizeSpec := range []string{"200x #e3e615", "200x jpg #e3e615"} {
resized, err := orig.Resize(resizeSpec)
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Log("resize", rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
}
for _, img := range testImages {
orig := fetchImageForSpec(spec, c, img)
for _, resizeSpec := range []string{"200x100", "600x", "200x r90 q50 Box"} {
resized, err := orig.Resize(resizeSpec)
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Log("resize", rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
for _, fillSpec := range []string{"300x200 Gaussian Smart", "100x100 Center", "300x100 TopLeft NearestNeighbor", "400x200 BottomLeft"} {
resized, err := orig.Fill(fillSpec)
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Log("fill", rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
for _, fitSpec := range []string{"300x200 Linear"} {
resized, err := orig.Fit(fitSpec)
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Log("fit", rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
f := &images.Filters{}
filters := []gift.Filter{
f.Grayscale(),
f.GaussianBlur(6),
f.Saturation(50),
f.Sepia(100),
f.Brightness(30),
f.ColorBalance(10, -10, -10),
f.Colorize(240, 50, 100),
f.Gamma(1.5),
f.UnsharpMask(1, 1, 0),
f.Sigmoid(0.5, 7),
f.Pixelate(5),
f.Invert(),
f.Hue(22),
f.Contrast(32.5),
}
resized, err := orig.Fill("400x200 center")
c.Assert(err, qt.IsNil)
for _, filter := range filters {
resized, err := resized.Filter(filter)
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Logf("filter: %v %s", filter, rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
resized, err = resized.Filter(filters[0:4])
c.Assert(err, qt.IsNil)
rel := resized.RelPermalink()
c.Log("filter all", rel)
c.Assert(rel, qt.Not(qt.Equals), "")
}
if devMode {
return
}
dir1 := filepath.Join(workDir, "resources/_gen/images")
dir2 := filepath.FromSlash("testdata/golden")
// The two dirs above should now be the same.
dirinfos1, err := ioutil.ReadDir(dir1)
c.Assert(err, qt.IsNil)
dirinfos2, err := ioutil.ReadDir(dir2)
c.Assert(err, qt.IsNil)
c.Assert(len(dirinfos1), qt.Equals, len(dirinfos2))
for i, fi1 := range dirinfos1 {
fi2 := dirinfos2[i]
c.Assert(fi1.Name(), qt.Equals, fi2.Name())
f1, err := os.Open(filepath.Join(dir1, fi1.Name()))
c.Assert(err, qt.IsNil)
f2, err := os.Open(filepath.Join(dir2, fi2.Name()))
c.Assert(err, qt.IsNil)
img1, _, err := image.Decode(f1)
c.Assert(err, qt.IsNil)
img2, _, err := image.Decode(f2)
c.Assert(err, qt.IsNil)
nrgba1 := image.NewNRGBA(img1.Bounds())
gift.New().Draw(nrgba1, img1)
nrgba2 := image.NewNRGBA(img2.Bounds())
gift.New().Draw(nrgba2, img2)
if !goldenEqual(nrgba1, nrgba2) {
switch fi1.Name() {
case "gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_4c320010919da2d8b63ed24818b4d8e1.png",
"gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_9d4c2220235b3c2d9fa6506be571560f.png",
"gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_c74bb417b961e09cf1aac2130b7b9b85.png",
"gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_300x200_fill_gaussian_smart1_2.png":
c.Log("expectedly differs from golden due to dithering:", fi1.Name())
default:
t.Errorf("resulting image differs from golden: %s", fi1.Name())
}
}
if !usesFMA {
c.Assert(fi1, eq, fi2)
_, err = f1.Seek(0, 0)
c.Assert(err, qt.IsNil)
_, err = f2.Seek(0, 0)
c.Assert(err, qt.IsNil)
hash1, err := helpers.MD5FromReader(f1)
c.Assert(err, qt.IsNil)
hash2, err := helpers.MD5FromReader(f2)
c.Assert(err, qt.IsNil)
c.Assert(hash1, qt.Equals, hash2)
}
f1.Close()
f2.Close()
}
}
func BenchmarkResizeParallel(b *testing.B) {
c := qt.New(b)
img := fetchSunset(c)
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
w := rand.Intn(10) + 10
resized, err := img.Resize(strconv.Itoa(w) + "x")
if err != nil {
b.Fatal(err)
}
_, err = resized.Resize(strconv.Itoa(w-1) + "x")
if err != nil {
b.Fatal(err)
}
}
})
}