ladybird/Tests/LibWeb/Text/input/ShadowDOM/declarative-basic.html

<div id="basicOpen">
<template shadowrootmode="open">open</template>
</div>
<div id="basicClosed">
<template shadowrootmode="closed">closed</template>
</div>
<div id="redundant">
<template shadowrootmode="open">open</template>
<template shadowrootmode="open">also open</template>
</div>
<div id="basicOpenClonable">
<template shadowrootmode="open" shadowrootclonable>open</template>
</div>
<div id="basicOpenSerializable">
<template shadowrootmode="open" shadowrootserializable>open</template>
</div>
<script src="../include.js"></script>
<script>
    test(() => {
        println(basicOpen.shadowRoot);
        println(basicOpen.childElementCount);

        println(basicClosed.shadowRoot);
        println(basicClosed.childElementCount);

        println(redundant.shadowRoot);
        println(redundant.childElementCount);

        let clonedUnclonable = basicOpen.cloneNode();
        println(clonedUnclonable.shadowRoot);
        println(clonedUnclonable.childElementCount);

        let clonedClonable = basicOpenClonable.cloneNode();
        println(clonedClonable.shadowRoot);
        println(clonedClonable.childElementCount);

        println(basicOpen.getHTML({ serializableShadowRoots: true}));
        println(basicOpen.getHTML({ shadowRoots: [ basicOpen.shadowRoot ]}));
        println(basicOpenSerializable.getHTML({ serializableShadowRoots: true}));
        println(basicOpenSerializable.getHTML({ serializableShadowRoots: false}));
        println(basicOpenSerializable.getHTML({ shadowRoots: [ basicOpenSerializable.shadowRoot ]}));
    });
</script>