iframe_history_go_0.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/history/the-history-interface/iframe_history_go_0.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

  <title>iframe_history_go_0</title>

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

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

</head>

<body>

<iframe></iframe>

<script>

promise_test(async (t) => {

  let iframe = null;

  const OLD_URL = 'blank-old.html';

  const NEW_URL = 'blank-new.html';

  await new Promise(resolve => {

    iframe = document.createElement('iframe');

    iframe.onload = () => resolve();

    iframe.src = OLD_URL;

    document.body.appendChild(iframe);

    t.add_cleanup(() => iframe.remove());

});

  assert_equals(iframe.contentDocument.body.textContent, 'This is an old page.\n');

  await new Promise(resolve => {

    iframe.onload = () => resolve();

    iframe.src = NEW_URL;

});

  assert_equals(iframe.contentDocument.body.textContent, 'This is a new page.\n');

  await new Promise(resolve => {

    iframe.onload = () => resolve();

    iframe.contentWindow.history.go(0);

});

  assert_equals(iframe.contentDocument.body.textContent, 'This is a new page.\n');

}, 'iframe\'s history.go(0) performs a location.reload()');

</script>

</body>