coop-navigated-popup.https.html

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This WPT test may be referenced by the following Test IDs:
- /html/cross-origin-opener-policy/coop-navigated-popup.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Cross-Origin-Opener-Policy: a navigated popup</title>

<!-- In particular this is different from coep-navigate-popup.https.html as this document initiates

     the navigation (and uses same-origin-allow-popups and no COEP as without that it cannot be

     observed). COOP should work identically, but implementations might have used the wrong

     authority. -->

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

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

<script src="/common/utils.js"></script> <!-- Use token() to allow running tests in parallel -->

<script>

async_test(t => {

  const noCOOP = "/common/blank.html";

  const popupName = token();

  const popup = window.open(noCOOP, popupName);

  const channel = new BroadcastChannel(token());

  // Close the popup once the test is complete.

  // The browsing context is closed after the navigation hence use the broadcast channel

  // to trigger the closure.

  t.add_cleanup(() => {

    channel.postMessage("close");

});

  popup.onload = t.step_func(() => {

    assert_equals(popup.name, popupName);

    assert_equals(new URL(popup.document.URL).pathname, noCOOP);

    channel.onmessage = t.step_func_done(event => {

      const payload = event.data;

      // The name should be empty, but we're checking the length rather than a

      // string comparison to "" to keep the random token out of error messages.

      assert_equals(payload.name.length, 0);

      assert_false(payload.opener);

      assert_true(popup.closed);

});

    const coop = `resources/coop-coep.py?coop=same-origin&coep=&channel=${channel.name}`;

    popup.location = coop;

});

}, "Open a popup to a document without COOP, then navigate it to a document with");

</script>