testing/web-platform/tests/html/canvas/element/canvas-context/2d.canvas.context.invalid.args.html
author Dana Keeler <dkeeler@mozilla.com>
Sat, 12 Jul 2025 15:57:37 +0000 (11 hours ago)
changeset 796342 3a804f83c6b282c3c6b6ed9b67bacbc277bfb300
parent 752939 1996e4a4973941fa87e76e5646d5bb0088c0de84
permissions -rw-r--r--
Bug 1976779 - rsclientcerts: make each backend responsible for rate-limiting calls to find_objects r=jschanck Before this patch, `rsclientcerts::manager` would rate-limit calls to `find_objects` to once every 3 seconds because the underlying operation can be time-consuming (in particular, on macOS and Windows, if there are many certificates/keys available). On Android, keys aren't available until the user selects one, which means that if a call to `find_objects` happened before the selection prompt was shown (which is what happens) and the user chose one in less than 3 seconds, the backend wouldn't search again, thus making it seem like no keys were available, which would cause Firefox to not send a client certificate. This patch makes each backend implementation responsible for this rate-limiting, because only they know if it's appropriate to do so (in particular, on Android, `find_objects` doesn't have the same performance concern as on macOS and Windows because rather than searching for certificates and keys, it asks `ClientAuthCertificateManager` for the cached list of certificates and keys that have already been approved for use by the user). Differential Revision: https://phabricator.services.mozilla.com/D257065
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>Canvas 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>
<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
<body class="show_output">

<h1>2d.canvas.context.invalid.args</h1>
<p class="desc">Calling getContext with invalid arguments.</p>


<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>

<ul id="d"></ul>
<script>
var t = async_test("Calling getContext with invalid arguments.");
_addTest(function(canvas, ctx) {

  _assertSame(canvas.getContext(''), null, "canvas.getContext('')", "null");
  _assertSame(canvas.getContext('2d#'), null, "canvas.getContext('2d#')", "null");
  _assertSame(canvas.getContext('This is clearly not a valid context name.'), null, "canvas.getContext('This is clearly not a valid context name.')", "null");
  _assertSame(canvas.getContext('2d\0'), null, "canvas.getContext('2d\\0')", "null");
  _assertSame(canvas.getContext('2\uFF44'), null, "canvas.getContext('2\\uFF44')", "null");
  _assertSame(canvas.getContext('2D'), null, "canvas.getContext('2D')", "null");
  assert_throws_js(TypeError, function() { canvas.getContext(); });
  _assertSame(canvas.getContext('null'), null, "canvas.getContext('null')", "null");
  _assertSame(canvas.getContext('undefined'), null, "canvas.getContext('undefined')", "null");

});
</script>