platform/qt/fast/canvas/toDataURL-jpeg-quality-outsiderange.html

<html>
<head>
    <script src="toDataURL-jpeg.js"></script>
    <script>
        if (window.testRunner)
            testRunner.dumpAsText();

        window.notifyEndTest = function ()
        {
            if (window.testRunner)
                testRunner.notifyDone();
        };

        function testToDataURL(canvas, ctx)
        {
            ctx.fillStyle = '#00f';
            ctx.fillRect(0, 0, 100, 50);
            ctx.fillStyle = '#0ff';
            ctx.fillRect(0, 3, 100, 1);
            // Check for JPEG support first
            var data = canvas.toDataURL('image/jpeg');
            if (!data.match(/^data:image\/jpeg[;,]/)) {
                _assert(true, "true");
            } else {
                _assertSame(canvas.toDataURL('image/jpeg', 10), data, "canvas.toDataURL('image/jpeg', 10)", "data");
                _assertSame(canvas.toDataURL('image/jpeg', -10), data, "canvas.toDataURL('image/jpeg', -10)", "data");
                _assertSame(canvas.toDataURL('image/jpeg', 1.01), data, "canvas.toDataURL('image/jpeg', 1.01)", "data");
                _assertSame(canvas.toDataURL('image/jpeg', -0.01), data, "canvas.toDataURL('image/jpeg', -0.01)", "data");
            
                _assert(canvas.toDataURL('image/jpeg', 1).length >= canvas.toDataURL('image/jpeg', 0.9).length, "canvas.toDataURL('image/jpeg', 1).length >= canvas.toDataURL('image/jpeg', 0.9).length");
                _assert(canvas.toDataURL('image/jpeg', 0).length <= canvas.toDataURL('image/jpeg', 0.1).length, "canvas.toDataURL('image/jpeg', 0).length <= canvas.toDataURL('image/jpeg', 0.1).length");
                if (window.testRunner)
                    testRunner.waitUntilDone();
            }
        }

        _addTest(testToDataURL);
    </script>
</head>
<body>
    <p>If the quality parameter is out of range, it should be treated as 1.0</p>
    <canvas id="c" width="100" height="50"></canvas>
    <p id="d"></p>
</body>
</html>