resources: Add Exif benchmark

See #6291

diff --git a/resources/image_test.go b/resources/image_test.go
index 4968190e96fca2006b49c49f6f994ea07571af48..dc5e0a2172cbee23da026795af5ea3cd2e24ef9f 100644 (file)
--- a/resources/image_test.go
+++ b/resources/image_test.go
@@ -23,6 +23,8 @@ import (
        "sync"
        "testing"
 
+       "github.com/spf13/afero"
+
        "github.com/disintegration/gift"
 
        "github.com/gohugoio/hugo/helpers"
@@ -358,6 +360,71 @@ func TestImageExif(t *testing.T) {
 
 }
 
+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] = fetchImageForSpec(spec, c, "sunset.jpg")
+               }
+               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])
+               }
+
+       })
+
+}
+
 func TestImageOperationsGolden(t *testing.T) {
        c := qt.New(t)
        c.Parallel()