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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" href="mailto:masonf@chromium.org">
<link rel="help" href="https://crbug.com/440874372">
<link rel="help" href="https://dom.spec.whatwg.org/#xpath">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host">
<template shadowrootmode="open">
<span id="target"></span>
</template>
</div>
<script>
test(function() {
const host = document.getElementById('host');
const span = host.shadowRoot.getElementById('target');
assert_true(!!span, "Span should exist in shadow DOM");
// evaluate xpath after attaching to shadow
const evaluator = new XPathEvaluator();
const result = evaluator.evaluate('//span', span, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE);
assert_equals(result.snapshotLength, 1, "Should find the span element");
assert_equals(result.snapshotItem(0), span, "Should find the correct span element");
}, "XPath //span should find element in Declarative Shadow DOM when evaluated on the element itself");
test(function() {
class MyCustomElement extends HTMLElement {
connectedCallback(){
const shadow = this.attachShadow({mode: 'open'});
const span = document.createElement('span');
shadow.appendChild(span);
// evaluate xpath after attaching to shadow
const evaluator = new XPathEvaluator();
const result = evaluator.evaluate('//span', span, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE);
assert_equals(result.snapshotLength, 1, "Should find the span element");
assert_equals(result.snapshotItem(0), span, "Should find the correct span element");
}
}
customElements.define('my-custom-element', MyCustomElement);
const el = document.createElement('my-custom-element');
document.body.appendChild(el);
}, "XPath //span should find element in Imperative Shadow DOM when evaluated on the element itself");
</script>
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