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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>Canvas test: 2d.imageData.create1.initial</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.imageData.create1.initial</h1>
<p class="desc">createImageData(imgdata) returns transparent black data of the right size</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("createImageData(imgdata) returns transparent black data of the right size");
_addTest(function(canvas, ctx) {
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
var imgdata1 = ctx.getImageData(0, 0, 10, 20);
var imgdata2 = ctx.createImageData(imgdata1);
_assertSame(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length");
_assertSame(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width");
_assertSame(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height");
var isTransparentBlack = true;
for (var i = 0; i < imgdata2.data.length; ++i)
if (imgdata2.data[i] !== 0)
isTransparentBlack = false;
_assert(isTransparentBlack, "isTransparentBlack");
});
</script>
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