window-reuse.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/the-window-object/window-reuse.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Test window reuse on initial navigation away from about:blank</title>

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

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

<div id=log></div>

<script>

promise_test(async t => {

  const w = window.open("/common/blank.html");

  t.add_cleanup(() => w.close());

  assert_equals(w.location.href, 'about:blank', 'window initially on a transient about:blank');

  w.foo = 'bar';

  await new Promise(res => w.onload = res);

  assert_true(w.location.href.endsWith('/common/blank.html'), 'loaded initial navigation target');

  assert_equals(w.foo, 'bar', 'did reuse window');

}, 'Initially navigating window to non-about:blank page should reuse synchonously available window');

promise_test(async t => {

  const name = 'unique-name-11sep25';

  const channel = new BroadcastChannel(name);

  const w = window.open("about:blank", name);

  t.add_cleanup(() => w.close());

  assert_equals(w.location.href, 'about:blank', 'loaded about:blank');

  w.foo = 'bar';

  w.location.href = 'support/window-open-popup-target.html';

  await new Promise(res => channel.onmessage = res);

  assert_true(true, 'completed non-initial load onto initial about:blank');

  assert_equals(w.foo, undefined, 'did reuse window');

}, 'synchronously navigating window away from initial about:blank should not reuse window');

</script>