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Test Info:

<!DOCTYPE html>
<meta charset=utf-8>
<title>Test that when the scripting flag is disabled, a head start tag in "in head noscript" mode is ignored</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<body>
<script>
promise_test(async function(t) {
let iframe = document.createElement("iframe");
iframe.srcdoc = "<!DOCTYPE html><head><noscript><head><style></style>";
iframe.sandbox = "allow-same-origin";
let loaded = new Promise(resolve => iframe.onload = resolve);
document.body.append(iframe);
await loaded;
assert_equals(String(iframe.contentDocument.querySelector("noscript").firstChild), "[object HTMLStyleElement]");
}, "When the scripting flag is disabled, a head start tag in \"in head noscript\" mode should be ignored");
</script>