third_party/web_platform_tests/2dcontext/pixel-manipulation/2d.imageData.get.clamp.html

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>Canvas test: 2d.imageData.get.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.get.clamp</h1>
<p class="desc">getImageData() clamps colours to the range [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("getImageData() clamps colours to the range [0, 255]");
_addTest(function(canvas, ctx) {

ctx.fillStyle = 'rgb(-100, -200, -300)';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = 'rgb(256, 300, 400)';
ctx.fillRect(20, 10, 60, 10);
var imgdata1 = ctx.getImageData(10, 5, 1, 1);
_assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0");
_assertSame(imgdata1.data[1], 0, "imgdata1.data[\""+(1)+"\"]", "0");
_assertSame(imgdata1.data[2], 0, "imgdata1.data[\""+(2)+"\"]", "0");
var imgdata2 = ctx.getImageData(30, 15, 1, 1);
_assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255");
_assertSame(imgdata2.data[1], 255, "imgdata2.data[\""+(1)+"\"]", "255");
_assertSame(imgdata2.data[2], 255, "imgdata2.data[\""+(2)+"\"]", "255");


});
</script>