<canvas width="200" height="200" id="canvas">FAIL: no canvas support</canvas>
<div id="log"></div>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

var canvas = document.getElementById("canvas").getContext("2d");
//four tests
// 1. Infinite dimensions to fillRect
canvas.fillStyle = "green";
canvas.fillRect(0, 0, 100, 100);
canvas.fillStyle = "red";
try {
    canvas.fillRect(0, 0, Infinity, Infinity);
} catch (e) {
    canvas.fillRect(0, 0, 100, 100);
}

// 2. Infinite dimensions to rect
canvas.fillStyle = "green";
canvas.fillRect(100, 0, 100, 100);
canvas.fillStyle = "red";
try {
    canvas.rect(100, 0, Infinity, Infinity);
    canvas.fill();
} catch (e) {
    canvas.fillRect(100, 0, 100, 100);
}

// 3. Infinite argument to moveTo
canvas.translate(0, 100);
canvas.fillStyle = "red";
canvas.fillRect(0, 0, 100, 100);
canvas.fillStyle = "green";
try {
    canvas.beginPath();
    canvas.moveTo(Infinity, Infinity);
    canvas.rect(0, 0, 100, 100);
    canvas.fill();
} catch (e) {
    alert(e);
}

// 4. Infinite argument to lineTo
canvas.translate(100, 0);
canvas.fillStyle = "red";
canvas.fillRect(0, 0, 100, 100);
canvas.fillStyle = "green";
try {
    canvas.beginPath();
    canvas.moveTo(0,0);
    canvas.lineTo(100, 0);
    canvas.lineTo(100, 100);
    canvas.lineTo(0, 100);
    canvas.lineTo(Infinity, 100);
    canvas.fill();
} catch (e) {
}

function log(msg){
    document.getElementById("log").innerHTML += msg + "<br/>";
}

function dataToArray(data) {
    var result = new Array(data.length)
    for (var i = 0; i < data.length; i++)
        result[i] = data[i];
    return result;
}

function getPixel(ctx, x, y) {
    var data = ctx.getImageData(x,y,1,1);
    if (!data) // getImageData failed, which should never happen
        return [-1,-1,-1,-1];
    return dataToArray(data.data);
}

function pixelShouldBe(ctx, x, y, colour) {
    var ctxColour = getPixel(ctx, x, y);
    var correct = true;
    for (var i = 0; i < 4; i++)
        if (colour[i] != ctxColour[i]) {
            correct = false;
            break;
        }
    if (correct)
        log("PASS: pixel at ("+[x,y]+") was ["+colour+"]");
    else
        log("FAIL: pixel at ("+[x,y]+") was ["+ctxColour+"], expected ["+colour+"]");
}

var points = [25, 50, 75, 125, 150, 175];
for (var x = 0; x < points.length; x++) {
    for (var y = 0; y < points.length; y++) {
        pixelShouldBe(canvas, points[x], points[y], [0, 128, 0, 255]);
    }
}
</script>