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ImageData: add test

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Halil Durak
2026-02-15 16:52:50 +03:00
parent dc66032720
commit 2e8a9f809e
1 changed files with 75 additions and 0 deletions
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src/browser/tests/image_data.html Normal file
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<!DOCTYPE html>
<script src="testing.js"></script>
<script id=constructor-basic>
{
const img = new ImageData(10, 20);
testing.expectEqual(10, img.width);
testing.expectEqual(20, img.height);
testing.expectEqual("srgb", img.colorSpace);
testing.expectEqual("rgba-unorm8", img.pixelFormat);
}
</script>
<script id=data-property>
{
const img = new ImageData(2, 3);
const data = img.data;
testing.expectEqual(true, data instanceof Uint8ClampedArray);
// 2 * 3 * 4 (RGBA) = 24 bytes
testing.expectEqual(24, data.length);
}
</script>
<script id=data-initialized-to-zero>
{
const img = new ImageData(2, 2);
const data = img.data;
for (let i = 0; i < data.length; i++) {
testing.expectEqual(0, data[i]);
}
}
</script>
<script id=data-mutability>
{
const img = new ImageData(1, 1);
const data = img.data;
// Set pixel to red (RGBA)
data[0] = 255;
data[1] = 0;
data[2] = 0;
data[3] = 255;
// Read back through the same accessor
const data2 = img.data;
testing.expectEqual(255, data2[0]);
testing.expectEqual(0, data2[1]);
testing.expectEqual(0, data2[2]);
testing.expectEqual(255, data2[3]);
}
</script>
<script id=constructor-with-settings>
{
const img = new ImageData(5, 5, { colorSpace: "srgb" });
testing.expectEqual(5, img.width);
testing.expectEqual(5, img.height);
testing.expectEqual("srgb", img.colorSpace);
}
</script>
<script id=constructor-invalid-colorspace>
testing.expectError("TypeError", () => {
new ImageData(5, 5, { colorSpace: "display-p3" });
});
</script>
<script id=single-pixel>
{
const img = new ImageData(1, 1);
testing.expectEqual(4, img.data.length);
testing.expectEqual(1, img.width);
testing.expectEqual(1, img.height);
}
</script>