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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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testing/web-platform/tests/2dcontext/pixel-manipulation/2d.imageData.object.clamp.html Normal file
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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>Canvas test: 2d.imageData.object.clamp</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>
<link rel="stylesheet" href="/common/canvas-tests.css">
<body class="show_output">
<h1>2d.imageData.object.clamp</h1>
<p class="desc">ImageData.data clamps numbers to [0, 255]</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("ImageData.data clamps numbers to [0, 255]");
_addTest(function(canvas, ctx) {
var imgdata = ctx.getImageData(0, 0, 10, 10);
imgdata.data[0] = 100;
imgdata.data[0] = 300;
_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
imgdata.data[0] = 100;
imgdata.data[0] = -100;
_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
imgdata.data[0] = 100;
imgdata.data[0] = 200+Math.pow(2, 32);
_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
imgdata.data[0] = 100;
imgdata.data[0] = -200-Math.pow(2, 32);
_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
imgdata.data[0] = 100;
imgdata.data[0] = Math.pow(10, 39);
_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
imgdata.data[0] = 100;
imgdata.data[0] = -Math.pow(10, 39);
_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
imgdata.data[0] = 100;
imgdata.data[0] = -Infinity;
_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
imgdata.data[0] = 100;
imgdata.data[0] = Infinity;
_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
});
</script>