2d.canvas.context.invalid.args.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/canvas/offscreen/canvas-context/2d.canvas.context.invalid.args.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->

<meta charset="UTF-8">

<title>OffscreenCanvas test: 2d.canvas.context.invalid.args</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.context.invalid.args</h1>

<p class="desc">Calling getContext with invalid arguments.</p>

<script>

var t = async_test("Calling getContext with invalid arguments.");

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');

  assert_throws_js(TypeError, function() { canvas.getContext(''); });

  assert_throws_js(TypeError, function() { canvas.getContext('This is not an implemented context in any real browser'); });

  assert_throws_js(TypeError, function() { canvas.getContext('2d#'); });

  assert_throws_js(TypeError, function() { canvas.getContext('2d\0'); });

  assert_throws_js(TypeError, function() { canvas.getContext('2\uFF44'); });

  assert_throws_js(TypeError, function() { canvas.getContext('2D'); });

  assert_throws_js(TypeError, function() { canvas.getContext(); });

  assert_throws_js(TypeError, function() { canvas.getContext('null'); });

  assert_throws_js(TypeError, function() { canvas.getContext('undefined'); });

  t.done();

});

</script>