css/css-paint-api/parse-input-arguments-021.https.html

<!DOCTYPE html>
<html class="reftest-wait">
<link rel="help" href="https://drafts.css-houdini.org/css-paint-api/">
<link rel="match" href="parse-input-arguments-ref.html">
<style>
.container {
  width: 100px;
  height: 100px;
}

#canvas-geometry {
  background-image: paint(geometry);
}
</style>
<script src="/common/reftest-wait.js"></script>
<script src="/common/worklet-reftest.js"></script>
<body>
<div id="canvas-geometry" class="container"></div>

<script id="code" type="text/worklet">
var testsPassed = false;
try {
    registerPaint('foo', class {
        // Setting anything other than alpha should not throw exception, and
        // the alpha value should fall back to default, which is true.
        static get contextOptions() { return {bogus: true}; }
        paint() {}
    });
    testsPassed = true;
} catch(ex) {
    testsPassed = false;
}

registerPaint('geometry', class {
    paint(ctx, geom) {
        if (testsPassed)
            ctx.fillStyle = 'green';
        else
            ctx.fillStyle = 'red';
        ctx.fillRect(0, 0, geom.width, geom.height);
    }
});
</script>

<script>
    importWorkletAndTerminateTestAfterAsyncPaint(CSS.paintWorklet, document.getElementById('code').textContent);
</script>
</body>
</html>