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<!doctype html>
<title>CSS Scoping: Invalidation of style data while ShadowRoot is disconnected.</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-scoping">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1612114">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host"></div>
<script>
let t = async_test("Invalidation of style data while ShadowRoot is disconnected.");
let host = document.getElementById("host");
host.attachShadow({ mode: "open" }).innerHTML = `
<style>
div { color: red }
</style>
<div></div>
`;
assert_equals(getComputedStyle(host.shadowRoot.querySelector("div")).color, "rgb(255, 0, 0)");
host.remove();
host.shadowRoot.querySelector("style").remove();
requestAnimationFrame(t.step_func(function() {
requestAnimationFrame(t.step_func_done(function() {
document.body.appendChild(host);
assert_not_equals(getComputedStyle(host.shadowRoot.querySelector("div")).color, "rgb(255, 0, 0)");
}));
}));
</script>
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