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18 lines
607 B
HTML
18 lines
607 B
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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promise_test(async (t) => {
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assert_implements("HTMLPortalElement" in self);
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let hostWindow = window.open();
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assert_equals(hostWindow.location.href, "about:blank");
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let portal = hostWindow.document.createElement("portal");
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portal.src = "resources/simple-portal.html";
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hostWindow.document.body.appendChild(portal);
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await promise_rejects_dom(t, "InvalidStateError", hostWindow.DOMException, portal.activate());
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}, "about:blank cannot host a portal");
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</script>
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