canvas-quadratic-same-endpoint.html

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<body>
<canvas id="canvas" width="100" height="100"></canvas>
<script>
var ctx = document.getElementById('canvas').getContext('2d');

function shouldBeYellow(x, y)
{
    blue_value = ctx.getImageData(x, y, 1, 1).data[2];
    assert_equals(blue_value, 0);
}

function shouldBeBlue(x, y)
{
    blue_value = ctx.getImageData(x, y, 1, 1).data[2];
    assert_equals(blue_value, 255);
}

test(function(t) {
    ctx.fillStyle = '#00f';
    ctx.strokeStyle = '#ff0';
    ctx.lineWidth = 30;
    
    ctx.beginPath();
    ctx.fillRect(0, 0, 100, 100);
    
    // quadratic with coincident endpoint
    ctx.moveTo(20, 20);
    
    //Next line should be close to ctx.bezierCurveTo(81, 80, 80, 80, 20, 20);
    ctx.quadraticCurveTo(110, 110, 20, 20);
    
    shouldBeBlue(70, 70);
    ctx.stroke();
    shouldBeYellow(70, 70);
}, "Bug 105650: Test correct rendering of quadratic and bezier curves with coincident endpoints");

</script>
</body>

chromium/third_party/blink/web_tests/fast/canvas/canvas-quadratic-same-endpoint.html