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<!doctype html>
<meta charset=utf-8>
<title>Node.appendChild: inserting script and default-style meta from a fragment</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<link rel="alternate stylesheet" title="alternative" href="data:text/css,%23div{display:none}">
<div id="div">hello</div>
<script>
let scriptRan = false;
let computedStyleDuringInsertion = null;
test(() => {
const div = document.getElementById("div");
const meta = document.createElement("meta");
meta.httpEquiv = "default-style";
meta.content = "alternative";
const script = document.createElement("script");
script.textContent = `
computedStyleDuringInsertion = getComputedStyle(div).display;
scriptRan = true;
`;
const df = document.createDocumentFragment();
df.appendChild(script);
df.appendChild(meta);
assert_equals(getComputedStyle(div).display, "block", "div has block display");
assert_false(scriptRan, "script has not run before insertion");
document.head.appendChild(df);
assert_true(scriptRan, "script has run after insertion");
assert_equals(computedStyleDuringInsertion, "none",
"display: none; style was applied during DOM insertion, before " +
"later-inserted script runs");
assert_equals(getComputedStyle(div).display, "none",
"style remains display: none; after insertion");
}, "Inserting <meta> that uses alternate stylesheets, applies the style " +
"during DOM insertion, and before script runs as a result of any atomic insertions");
</script>
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