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A JPEG XL source is accepted, and orig of one is JPEG XL. The format jxl works in plain and encrypted URLs and on the generator page, served as image/jxl; auto chooses it first when Accept names image/jxl. govips sends libvips a JPEG XL distance, which overrides the quality, so q is turned into a distance, keeping 100 lossy. govips cannot have libvips strip metadata from JPEG XL, so it is removed from the image before saving; libvips 8.16 and later still add an EXIF block of their own, with nothing from the source. The conversion to sRGB moved ahead of the format switch, and a CMYK image with no ICC profile is converted to sRGB too, as libvips cannot save CMYK as JPEG XL. Model: opus-5-5
74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
package handlers
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import (
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"log/slog"
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"net/http"
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"testing"
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"github.com/davidbyttow/govips/v2/vips"
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"sneak.berlin/go/pixa/internal/imgcache"
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)
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// jxlType is the content type of JPEG XL.
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const jxlType = "image/jxl"
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// TestFormatForAccept_JPEGXL verifies that the format auto chooses JPEG XL
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// when Accept names image/jxl, ahead of AVIF whatever their q, and AVIF when
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// Accept refuses JPEG XL with q=0.
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func TestFormatForAccept_JPEGXL(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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accept string
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want imgcache.ImageFormat
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}{
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{"JPEG XL-capable browser",
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"image/jxl,image/avif,image/webp,image/*,*/*;q=0.8", imgcache.FormatJXL},
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{"JPEG XL only", jxlType, imgcache.FormatJXL},
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{"JPEG XL with a lower q than AVIF", "image/avif,image/jxl;q=0.5",
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imgcache.FormatJXL},
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{"q=0 on JPEG XL", "image/jxl;q=0,image/avif,*/*", imgcache.FormatAVIF},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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got, err := formatForAccept(tt.accept)
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if got != tt.want || err != nil {
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t.Errorf("formatForAccept(%q) = %q, %v, want %q",
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tt.accept, got, err, tt.want)
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}
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})
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}
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}
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// TestFormatAuto_JPEGXL requests an auto URL on each image route with an
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// Accept header that names image/jxl, and checks that the answer is a JPEG XL
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// image.
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func TestFormatAuto_JPEGXL(t *testing.T) {
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t.Parallel()
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h, srv := newSignedHostServer(t, slog.New(slog.DiscardHandler))
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signedURL, encryptedURL := autoPhotoURLs(t, h)
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for _, target := range []string{signedURL, encryptedURL} {
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rec := requestImage(t, srv, http.MethodGet, target,
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"image/jxl,image/avif,image/webp,*/*;q=0.8")
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gotType := rec.Header().Get("Content-Type")
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if rec.Code != http.StatusOK || gotType != jxlType {
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t.Errorf("%s: %d %s, want 200 %s; body %s",
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target, rec.Code, gotType, jxlType, rec.Body)
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continue
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}
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if got := vips.DetermineImageType(rec.Body.Bytes()); got != vips.ImageTypeJXL {
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t.Errorf("%s: body is %s, want jxl", target, vips.ImageTypes[got])
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}
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}
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}
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