window-open-noopener-existing-iframe.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/browsers/the-window-object/window-open-noopener-existing-iframe.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>window.open() with "noopener" targeting an existing navigable does not set its opener</title>

<link rel=help href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-open-steps">

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

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

<div id=log></div>

<script>

/**

 * The name lookup in "the rules for choosing a navigable" happens regardless of

 * noopener, so window.open() can pick an existing navigable even when noopener

 * is set. When it does, the window open steps must not set that navigable's

 * opener, which for a nested navigable such as an iframe means it has to stay

 * null.

*/

async_test(function(t) {

  var iframe = document.createElement("iframe");

  iframe.name = "window-open-noopener-existing-iframe";

  t.add_cleanup(function() { iframe.remove(); });

  iframe.onload = t.step_func(function() {

    assert_equals(iframe.contentWindow.opener, null,

                  "A nested navigable has no opener to begin with");

    iframe.onload = t.step_func_done(function() {

      assert_equals(iframe.contentWindow.location.pathname, "/common/blank.html",

                    "Should have navigated the existing iframe");

      assert_equals(iframe.contentWindow.opener, null,

                    "Should not have set the opener of the existing iframe");

});

    assert_equals(window.open("/common/blank.html", iframe.name, "noopener"), null,

                  "window.open() with noopener returns null");

});

  document.body.append(iframe);

}, "window.open() with noopener targeting an existing named iframe does not set its opener");

</script>