gecko-dev/testing/web-platform/tests/2dcontext/path-objects/2d.path.arcTo.scale.html

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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>Canvas test: 2d.path.arcTo.scale</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.path.arcTo.scale</h1>
<p class="desc">arcTo scales the curve, not just the control points</p>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
<p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
<ul id="d"></ul>
<script>
var t = async_test("arcTo scales the curve, not just the control points");
_addTest(function(canvas, ctx) {
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#0f0';
ctx.beginPath();
ctx.moveTo(0, 50);
ctx.translate(100, 0);
ctx.scale(0.1, 1);
ctx.arcTo(50, 50, 50, 0, 50);
ctx.lineTo(-1000, 0);
ctx.fill();
_assertPixel(canvas, 0,0, 0,255,0,255, "0,0", "0,255,0,255");
_assertPixel(canvas, 50,0, 0,255,0,255, "50,0", "0,255,0,255");
_assertPixel(canvas, 99,0, 0,255,0,255, "99,0", "0,255,0,255");
_assertPixel(canvas, 0,25, 0,255,0,255, "0,25", "0,255,0,255");
_assertPixel(canvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
_assertPixel(canvas, 99,25, 0,255,0,255, "99,25", "0,255,0,255");
_assertPixel(canvas, 0,49, 0,255,0,255, "0,49", "0,255,0,255");
_assertPixel(canvas, 50,49, 0,255,0,255, "50,49", "0,255,0,255");
_assertPixel(canvas, 99,49, 0,255,0,255, "99,49", "0,255,0,255");
});
</script>