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Go
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import ( "testing")
func TestParseImageMetadata(t *testing.T) { valid := map[string]any{ "mimeType": "image/png", "width": 800, "height": 600, "bytes": 120000, } meta := ParseImageMetadata(valid) if meta == nil { t.Fatal("expected valid image metadata") } if meta.MimeType != ImagePNG || meta.Width != 800 || meta.Height != 600 || meta.Bytes != 120000 { t.Fatalf("unexpected metadata values: %+v", meta) }
// Bad mimeType badMime := map[string]any{ "mimeType": "image/gif", "width": 800, "height": 600, "bytes": 120000, } if ParseImageMetadata(badMime) != nil { t.Fatal("expected nil for image/gif") }
// Too large dimensions hugeDim := map[string]any{ "mimeType": "image/jpeg", "width": 10000, "height": 10000, "bytes": 120000, } if ParseImageMetadata(hugeDim) != nil { t.Fatal("expected nil for dimension product > 40M") }
// Too many bytes hugeBytes := map[string]any{ "mimeType": "image/webp", "width": 100, "height": 100, "bytes": 10 * 1024 * 1024, } if ParseImageMetadata(hugeBytes) != nil { t.Fatal("expected nil for bytes > 5MB") }}
func TestImageLabel(t *testing.T) { cases := []struct { meta ImageMetadata expected string }{ {ImageMetadata{MimeType: ImagePNG, Width: 800, Height: 600, Bytes: 500}, "PNG 800×600 · 500 B"}, {ImageMetadata{MimeType: ImageJPEG, Width: 1920, Height: 1080, Bytes: 150000}, "JPEG 1920×1080 · 147 KB"}, {ImageMetadata{MimeType: ImageWEBP, Width: 2048, Height: 1536, Bytes: 2500000}, "WEBP 2048×1536 · 2.4 MB"}, }
for _, tc := range cases { if res := ImageLabel(tc.meta); res != tc.expected { t.Errorf("expected %s, got %s", tc.expected, res) } }}