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chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-location-interface/location-prevent-extensions.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>[[PreventExtensions]] on a Location object should return false</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/history.html#location-preventextensions">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  assert_throws_js(TypeError, () => {
    Object.preventExtensions(location);
  });
}, "Object.preventExtensions throws a TypeError");

test(() => {
  assert_false(Reflect.preventExtensions(location));
}, "Reflect.preventExtensions returns false");
</script>