portals-activate-twice.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /portals/portals-activate-twice.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<script>

promise_test(async t => {

  assert_implements("HTMLPortalElement" in self);

  let waitForMessage = new Promise((resolve, reject) => {

    window.onmessage = e => resolve(e.data);

});

  window.open("resources/portal-activate-twice-window-1.html");

  let error = await waitForMessage;

  assert_equals(error, "InvalidStateError");

}, "Calling activate when a portal is already activating should fail");

promise_test(async t => {

  assert_implements("HTMLPortalElement" in self);

  let waitForMessage = new Promise((resolve, reject) => {

    window.onmessage = e => resolve(e.data);

});

  window.open("resources/portal-activate-twice-window-2.html");

  let error = await waitForMessage;

  assert_equals(error, "InvalidStateError");

});

</script>