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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.canvas.readonly</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.canvas.readonly</h1>
<p class="desc">canvas is readonly</p>
<script>
var t = async_test("canvas is readonly");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
var offscreenCanvas2 = new OffscreenCanvas(100, 50);
var d = ctx.canvas;
_assertDifferent(offscreenCanvas2, d, "offscreenCanvas2", "d");
ctx.canvas = offscreenCanvas2;
_assertSame(ctx.canvas, d, "ctx.canvas", "d");
t.done();
});
</script>
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