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// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.layer.malformed-operations.drawImage
// Description:Check that exceptions are thrown for operations that are malformed while layers are open.
// Note:
importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");
var t = async_test("Check that exceptions are thrown for operations that are malformed while layers are open.");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var canvas = new OffscreenCanvas(200, 200);
var ctx = canvas.getContext('2d');
const canvas2 = new OffscreenCanvas(200, 200);
const ctx2 = canvas2.getContext('2d');
// Shouldn't throw on its own.
ctx2.drawImage(canvas, 0, 0);
// Make sure the exception isn't caused by calling the function twice.
ctx2.drawImage(canvas, 0, 0);
// Calling again inside a layer should throw.
ctx.beginLayer();
assert_throws_dom("InvalidStateError",
() => ctx2.drawImage(canvas, 0, 0));
t.done();
});
done();
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