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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Changing content targetting :has-slotted(...) through a single shadow root</title>
<link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10586">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
</head>
<body>
<div id="test">
<template shadowrootmode="open">
<div id="inner">
<template shadowrootmode="open">
<slot></slot>
<p id="target">This text will be styled.</p>
<style>
p {
color: rgb(0 255 0);
}
slot:not(:has-slotted(span)) + p {
color: rgb(0 0 255);
}
slot:not(:has-slotted(div)) + p {
color: rgb(255 0 255);
}
</style>
</template>
</div>
</template>
</div>
<script>
const blue = 'rgb(0, 0, 255)';
const green = 'rgb(0, 255, 0)';
const fuchsia = 'rgb(255, 0, 255)';
test(function () {
const test = document.getElementById('test');
const inner = test.shadowRoot.getElementById('inner');
const target = inner.shadowRoot.getElementById('target');
let styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), green);
const span = document.createElement('span');
test.append(span);
styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), blue);
test.removeChild(span);
styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), green);
test.innerHTML = '<div></div>';
styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), fuchsia);
test.replaceChildren(span);
styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), blue);
span.remove();
styles = getComputedStyle(target);
assert_equals(styles.getPropertyValue('color'), green);
});
</script>
</body>
</html>
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