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2d.imageData.create2.negative.html
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2d.imageData.create2.negative.html
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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /offscreen-canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.imageData.create2.negative</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/2dcontext/resources/canvas-tests.js"></script>
<h1>2d.imageData.create2.negative</h1>
<p class="desc">createImageData(sw, sh) takes the absolute magnitude of the size arguments</p>
<script>
var t = async_test("createImageData(sw, sh) takes the absolute magnitude of the size arguments");
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 imgdata1 = ctx.createImageData(10, 20);
var imgdata2 = ctx.createImageData(-10, 20);
var imgdata3 = ctx.createImageData(10, -20);
var imgdata4 = ctx.createImageData(-10, -20);
_assertSame(imgdata1.data.length, imgdata2.data.length, "imgdata1.data.length", "imgdata2.data.length");
_assertSame(imgdata2.data.length, imgdata3.data.length, "imgdata2.data.length", "imgdata3.data.length");
_assertSame(imgdata3.data.length, imgdata4.data.length, "imgdata3.data.length", "imgdata4.data.length");
t.done();
});
</script>