third_party/WebKit/LayoutTests/fast/canvas-api/drawImage-with-valid-image.html

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

<script>

// Create image
var myImage = new Image();
var img_src = '../canvas/resources/apple.gif';
myImage.src = img_src;

var bitmap;
var ctx = document.createElement("canvas").getContext('2d');

function draw() {
    // No arguments should get exception
    assert_throws(new TypeError(), function() {
      ctx.drawImage();
    });
    // image argument only should get exception
    assert_throws(new TypeError(), function() {
      ctx.drawImage(myImage);
    });
    // image argument plus one number should get exception
    assert_throws(new TypeError(), function() {
      ctx.drawImage(myImage, 0);
    });

    // image argument plus 2 numbers
    ctx.drawImage(myImage, 0, 0);

    // image argument plus 4 numbers
    ctx.drawImage(myImage, 0, 0, 20, 20);

    // image argument plus 8 numbers
    ctx.drawImage(myImage, 0, 0, 20, 20, 0, 0, 20, 20);

    // image argument plus zero size
    ctx.drawImage(myImage, 0, 0, 0, 0);

    // image argument plus 8 numbers, zero size
    ctx.drawImage(myImage, 0, 0, 20, 20, 0, 0, 0, 0);

    // imageRect does not contain sourceRect on the left side
    ctx.drawImage(myImage, -10, 0, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on the right side
    ctx.drawImage(myImage, 10, 0, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on top
    ctx.drawImage(myImage, 0, -10, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on bottom
    ctx.drawImage(myImage, 0, 10, 52, 64, 0, 0, 20, 20);

    // sourceRect is bigger than imageSource on every side
    ctx.drawImage(myImage, -10, -10, 72, 84, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on the left side
    ctx.drawImage(myImage, 42, 64, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on the right side
    ctx.drawImage(myImage, 62, 64, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on top
    ctx.drawImage(myImage, 52, 54, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on bottom
    ctx.drawImage(myImage, 52, 74, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on every side
    ctx.drawImage(myImage, 62, 74, -72, -84, 0, 0, 20, 20);

    // images with no src can be drawn
    ctx.drawImage(new Image(), 0, 0);
    ctx.drawImage(new Image(), 0, 0, 20, 20);
    ctx.drawImage(new Image(), 0, 0, 20, 20, 0, 0, 20, 20);

    // images with no src exit early before IndexSizeError is thrown
    ctx.drawImage(new Image(), 0, 0);
    ctx.drawImage(new Image(), 0, 0, 0, 20);
    ctx.drawImage(new Image(), 0, 0, 0, 20, 0, 0, 20, 20);
}

function drawBitmap(imageBitmap) {
    bitmap = imageBitmap;

    // bitmap argument plus 2 numbers
    ctx.drawImage(bitmap, 0, 0);

    // bitmap argument plus 4 numbers
    ctx.drawImage(bitmap, 0, 0, 20, 20);

    // bitmap argument plus 8 numbers
    ctx.drawImage(bitmap, 0, 0, 20, 20, 0, 0, 20, 20);

    // bitmap argument plus zero size
    ctx.drawImage(bitmap, 0, 0, 0, 0);

    // bitmap argument plus 8 numbers, zero size
    ctx.drawImage(bitmap, 0, 0, 20, 20, 0, 0, 0, 0);

    // bitmap argument plus 8 numbers, negative size of source, zero size
    ctx.drawImage(bitmap, 20, 20, -20, 0, 0, 0, 20, 20);

    // bitmap argument plus 8 numbers, negative size of destination, zero size
    ctx.drawImage(bitmap, 0, 0, 20, 0, 20, 20, -20, -20);

    // bitmap argument plus 8 numbers, negative size of source and destination, zero size
    ctx.drawImage(bitmap, 20, 20, -20, 0, 20, 20, -20, -20);

    // imageRect does not contain sourceRect on the left side
    ctx.drawImage(bitmap, -10, 0, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on the right side
    ctx.drawImage(bitmap, 10, 0, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on top
    ctx.drawImage(bitmap, 0, -10, 52, 64, 0, 0, 20, 20);

    // imageRect does not contain sourceRect on bottom
    ctx.drawImage(bitmap, 0, 10, 52, 64, 0, 0, 20, 20);

    // sourceRect is bigger than imageSource on every side
    ctx.drawImage(bitmap, -10, -10, 72, 84, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on the left side
    ctx.drawImage(bitmap, 42, 64, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on the right side
    ctx.drawImage(bitmap, 62, 64, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on top
    ctx.drawImage(bitmap, 52, 54, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on bottom
    ctx.drawImage(bitmap, 52, 74, -52, -64, 0, 0, 20, 20);

    // negative size of source, imageRect does not contain sourceRect on every side
    ctx.drawImage(bitmap, 62, 74, -72, -84, 0, 0, 20, 20);
}

async_test(t => {
        myImage.onload = function() {
            t.step(draw);
            createImageBitmap(myImage).then(t.step_func(function(image) {
                drawBitmap(image);
            }));
            t.done();
        }
}, "This test checks behavior of valid arguments to Canvas::drawImage that use a valid source image.");
</script>