<!DOCTYPE html><!-- webkit-test-runner [ ModelElementEnabled=true ] -->
<html>
<body>
<model id="model">
    <source src="resources/heart.usdz">
</model>
<pre id="layers"></pre>
<script>
    window.testRunner?.waitUntilDone();
    window.testRunner?.dumpAsText();

    const layers = document.getElementById("layers");
    const model = document.getElementById("model");

    const modelDidLoad = () => {
        layers.innerText = window.internals?.layerTreeAsText(document) ?? "This test requires testRunner.";
        model.remove();
        window.testRunner?.notifyDone();
    }

    if (model.complete)
        modelDidLoad();
    else {
        model.addEventListener("load", modelDidLoad);
        model.addEventListener("error", event => {
            layers.textContent = `Failed. Model did not load.`;
            window.testRunner?.notifyDone();
        });
    }
</script>
</body>
</html>