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[feat] Report duration for animated GIF and WebP images.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package lilliput | ||
|
|
||
| import ( | ||
| "io" | ||
| "os" | ||
| "testing" | ||
| "time" | ||
| ) | ||
|
|
||
| func TestGIFOperations(t *testing.T) { | ||
| t.Run("GIFDuration", testGIFDuration) | ||
| } | ||
|
|
||
| func testGIFDuration(t *testing.T) { | ||
| testCases := []struct { | ||
| name string | ||
| filename string | ||
| wantLoopCount int | ||
| wantFrames int | ||
| wantDuration time.Duration | ||
| description string | ||
| }{ | ||
| { | ||
| name: "Standard animated GIF", | ||
| filename: "testdata/party-discord.gif", | ||
| wantLoopCount: 0, // infinite loop | ||
| wantFrames: 16, | ||
| wantDuration: time.Millisecond * 480, | ||
| description: "Basic animation with custom delays", | ||
| }, | ||
| { | ||
| name: "Static GIF image", | ||
| filename: "testdata/ferry_sunset.gif", | ||
| wantLoopCount: 1, // play once | ||
| wantFrames: 1, | ||
| wantDuration: 0, | ||
| description: "Static image, no animation", | ||
| }, | ||
| { | ||
| name: "Single loop GIF", | ||
| filename: "testdata/no-loop.gif", | ||
| wantLoopCount: 1, // play once | ||
| wantFrames: 44, | ||
| wantDuration: time.Millisecond * 4400, | ||
| description: "Animation that plays only once", | ||
| }, | ||
| { | ||
| name: "Duplicate loop count GIF", | ||
| filename: "testdata/duplicate_number_of_loops.gif", | ||
| wantLoopCount: 2, // play twice | ||
| wantFrames: 2, | ||
| wantDuration: 0, // unable to determine duration | ||
| description: "Animation with duplicate NETSCAPE2.0 extension blocks", | ||
| }, | ||
| { | ||
| name: "Background dispose GIF", | ||
| filename: "testdata/dispose_bgnd.gif", | ||
| wantLoopCount: 0, // infinite loop | ||
| wantFrames: 5, | ||
| wantDuration: time.Second * 5, | ||
| description: "Animation with background disposal method", | ||
| }, | ||
| } | ||
|
|
||
| for _, tc := range testCases { | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| testGIFImage, err := os.ReadFile(tc.filename) | ||
| if err != nil { | ||
| t.Fatalf("Failed to read gif image: %v", err) | ||
| } | ||
|
|
||
| decoder, err := newGifDecoder(testGIFImage) | ||
| if err != nil { | ||
| t.Fatalf("Failed to create decoder: %v", err) | ||
| } | ||
| defer decoder.Close() | ||
|
|
||
| // Test loop count | ||
| if got := decoder.LoopCount(); got != tc.wantLoopCount { | ||
| t.Errorf("LoopCount() = %v, want %v", got, tc.wantLoopCount) | ||
| } | ||
|
|
||
| // Test frame count | ||
| if got := decoder.FrameCount(); got != tc.wantFrames { | ||
| t.Errorf("FrameCount() = %v, want %v", got, tc.wantFrames) | ||
| } | ||
|
|
||
| // Test total duration | ||
| if got := decoder.Duration(); got != tc.wantDuration { | ||
| t.Errorf("Duration() = %v, want %v (%s)", got, tc.wantDuration, tc.description) | ||
| } | ||
|
|
||
| // Test per-frame durations | ||
| header, err := decoder.Header() | ||
| if err != nil { | ||
| t.Fatalf("Failed to get header: %v", err) | ||
| } | ||
|
|
||
| framebuffer := NewFramebuffer(header.width, header.height) | ||
| defer framebuffer.Close() | ||
|
|
||
| var totalDuration time.Duration | ||
| frameCount := 0 | ||
| for { | ||
| err = decoder.DecodeTo(framebuffer) | ||
| if err == io.EOF { | ||
| break | ||
| } | ||
| if err != nil { | ||
| t.Fatalf("DecodeTo failed: %v", err) | ||
| } | ||
|
|
||
| totalDuration += framebuffer.Duration() | ||
| frameCount++ | ||
| } | ||
|
|
||
| // Verify total duration matches sum of frame durations | ||
| if totalDuration != tc.wantDuration { | ||
| t.Errorf("Sum of frame durations (%v) doesn't match total duration (%v)", | ||
| totalDuration, tc.wantDuration) | ||
| } | ||
| }) | ||
| } | ||
| } |
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