content/canvas/test/test_2d.fill.winding.html

<!DOCTYPE HTML>
<title>Canvas test: 2d.fill.winding</title>
<script src="/MochiKit/MochiKit.js"></script>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<canvas id="c" width="100" height="100"><p class="fallback">FAIL (fallback content)</p></canvas>
<script>
function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
    var pixel = ctx.getImageData(x, y, 1, 1);
    var pr = pixel.data[0],
        pg = pixel.data[1],
        pb = pixel.data[2],
        pa = pixel.data[3];
    ok(r-d <= pr && pr <= r+d &&
       g-d <= pg && pg <= g+d &&
       b-d <= pb && pb <= b+d &&
       a-d <= pa && pa <= a+d,
       "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(function () {

var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');

ctx.fillStyle = 'rgb(255,0,0)';
ctx.beginPath();
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.beginPath();
ctx.rect(0, 0, 100, 100);
ctx.rect(25, 25, 50, 50);
ctx.fill();
isPixel(ctx, 50,50, 0,255,0,255, "50,50", "0,255,0,255", 5);

ctx.fillStyle = 'rgb(255,0,0)';
ctx.fillRect(0, 0, 100, 100);
ctx.fillStyle = 'rgb(0,255,0)';
ctx.beginPath();
ctx.rect(0, 0, 100, 100);
ctx.rect(25, 25, 50, 50);
ctx.fill('evenodd');
isPixel(ctx, 50,50, 255,0,0,255, "50,50", "255,0,0,255", 5);

SimpleTest.finish();

});
</script>