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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
promise_test(async t => {
var iframe = document.createElement("iframe");
iframe.src = "resources/portal-inside-iframe.html"
var waitForLoad = new Promise((resolve, reject) => {
iframe.onload = resolve;
await waitForLoad;
const portal = iframe.contentDocument.getElementById("portal");
return promise_rejects(t, "InvalidStateError", portal.activate());
}, "activating portal inside iframe should fail");
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