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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-pseudo/selection-universal-shadow-dom.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Universal ::selection in Shadow DOM</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
::selection {
background-color: pink;
color: red;
}
</style>
<div id="host"></div>
<script>
const root = host.attachShadow({mode:"open"});
root.innerHTML = `
<style>
::selection {
background-color: green;
color: lime;
}
</style>
<div id="target"></div>
`;
test(() => {
const style = getComputedStyle(root.querySelector("#target"), "::selection");
assert_equals(style.backgroundColor, "rgb(0, 128, 0)", "Background color is green.");
assert_equals(style.color, "rgb(0, 255, 0)", "Color is lime.");
}, "getComputedStyle() for #target ::selection");
</script>