mozilla-central: testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.zero.html@23185ed855a5b168943bde8ebe8ec946cd83f675

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>OffscreenCanvas test: 2d.imageData.get.zero</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.imageData.get.zero</h1>
<p class="desc">getImageData() throws INDEX_SIZE_ERR if size is zero</p>


<script>
var t = async_test("getImageData() throws INDEX_SIZE_ERR if size is zero");
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_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, 0); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0, 10); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0, 0); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 0.1, 10); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, 0.99); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, -0.1, 10); });
  assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.getImageData(1, 1, 10, -0.99); });
  t.done();

});
</script>

author	Gabriel Luong <gabriel.luong@gmail.com>
	Sun, 13 Jul 2025 02:28:40 +0000 (16 hours ago)
changeset 796385	23185ed855a5b168943bde8ebe8ec946cd83f675
parent 752939	1996e4a4973941fa87e76e5646d5bb0088c0de84
permissions	-rw-r--r--