<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: context.unrecognised.badname</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>context.unrecognised.badname</h1>
<p class="desc">getContext with unrecognised context name returns null</p>


<script>
var t = async_test("getContext with unrecognised context name returns null");
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 offscreenCanvas2 = new OffscreenCanvas(100, 50);
assert_throws_js(TypeError, function() { offscreenCanvas2.getContext('This is not an implemented context in any real browser'); });
t.done();

});
</script>