mirror of
https://github.com/servo/servo.git
synced 2025-07-12 01:43:43 +01:00
32 lines
1.1 KiB
HTML
32 lines
1.1 KiB
HTML
<!DOCTYPE html>
|
|
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
|
|
<title>OffscreenCanvas test: 2d.imageData.create2.initial</title>
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
<script src="/common/canvas-tests.js"></script>
|
|
|
|
<h1>2d.imageData.create2.initial</h1>
|
|
<p class="desc">createImageData(sw, sh) returns transparent black data of the right size</p>
|
|
|
|
|
|
<script>
|
|
var t = async_test("createImageData(sw, sh) returns transparent black data of the right size");
|
|
t.step(function() {
|
|
|
|
var offscreenCanvas = new OffscreenCanvas(100, 50);
|
|
var ctx = offscreenCanvas.getContext('2d');
|
|
|
|
var imgdata = ctx.createImageData(10, 20);
|
|
_assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4");
|
|
_assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height");
|
|
_assert(imgdata.width > 0, "imgdata.width > 0");
|
|
var isTransparentBlack = true;
|
|
for (var i = 0; i < imgdata.data.length; ++i)
|
|
if (imgdata.data[i] !== 0)
|
|
isTransparentBlack = false;
|
|
_assert(isTransparentBlack, "isTransparentBlack");
|
|
|
|
t.done();
|
|
|
|
});
|
|
</script>
|