createImageBitmap-exif-orientation_none.html

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This test has a WPT meta file that expects 7 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/manual/imagebitmap/createImageBitmap-exif-orientation_none.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Test that createImageBitmap honors EXIF orientation</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>canvas { outline: 1px solid black; margin-right: 1em; }</style>

<body>

<script>

function loadImage(src) {

    return new Promise(function(resolve) {

        const image = new Image();

        image.addEventListener("load", () => resolve(image), { once: true });

        image.src = src;

});

function checkColors(ctx, w, h, is_verticle, expectedColors) {

    let data = ctx.getImageData(0, 0, w, h).data;

    row_width = 80;

    col_width = 80;

    for (let [row, col, r, g, b, a] of expectedColors) {

        let x = col * row_width + 10;

        let y = row * col_width + 10;

        let i = (x + y * w) * 4;

        let expected = [r, g, b, a];

        let actual = [data[i], data[i + 1], data[i + 2], data[i + 3]];

        assert_array_approx_equals(actual, expected, 1, `Pixel value at (${x},${y}) ${expected} =~ ${actual}.`);

for (let orientation of [1, 2, 3, 4, 5, 6, 7, 8]) {

    async_test(function(t) {

        const canvas = document.createElement("canvas");

        canvas.width = 160;

        canvas.height = 320;

        document.body.append(canvas);

        const ctx = canvas.getContext("2d");

        loadImage(`resources/squares_${orientation}.jpg`)

            .then((image) => createImageBitmap(image, { imageOrientation: "none" }))

            .then(t.step_func_done(function(imageBitmap) {

                ctx.drawImage(imageBitmap, 0, 0, 160, 320);

                checkColors(ctx, canvas.width, canvas.height, false, [

                    // row, col, r, g, b, a

                    [0, 0, 0, 0, 0, 255],

                    [0, 1, 128, 128, 128, 255],

                    [1, 0, 0, 0, 255, 255],

                    [1, 1, 128, 128, 255, 255],

                    [2, 0, 0, 255, 0, 255],

                    [2, 1, 128, 255, 128, 255],

                    [3, 0, 255, 0, 0, 255],

                    [3, 1, 255, 128, 128, 255],

]);

            }));

    }, `createImageBitmap with Orientation ${orientation}`);

</script>