chromium/src/third_party/blink/web_tests/external/wpt/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.readonly.worker.js

// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.imageData.object.readonly
// Description:ImageData objects properties are read-only
// Note:

importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");

var t = async_test("ImageData objects properties are read-only");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
    throw reason;
});
t.step(function() {

var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');

var imgdata = ctx.getImageData(0, 0, 10, 10);
var w = imgdata.width;
var h = imgdata.height;
var d = imgdata.data;
imgdata.width = 123;
imgdata.height = 123;
imgdata.data = [100,100,100,100];
_assertSame(imgdata.width, w, "imgdata.width", "w");
_assertSame(imgdata.height, h, "imgdata.height", "h");
_assertSame(imgdata.data, d, "imgdata.data", "d");
_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
_assertSame(imgdata.data[1], 0, "imgdata.data[\""+(1)+"\"]", "0");
_assertSame(imgdata.data[2], 0, "imgdata.data[\""+(2)+"\"]", "0");
_assertSame(imgdata.data[3], 0, "imgdata.data[\""+(3)+"\"]", "0");
t.done();

});
done();