form-submit-cross-frame.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-submit-cross-frame.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

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

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

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

<form target="the-frame">

  <input type="hidden" name="pushed">

</form>

<script>

"use strict";

promise_test(async t => {

  const startingHistoryLength = history.length;

  const form = document.querySelector("form");

  const frameEndingURL = absoluteURL("resources/slow-message-source-with-history-and-location.html?pushed=");

  form.action = frameEndingURL;

  const frameStartingCode = `

    window.onload = () => { window.onloadFired = true; };

    parent.postMessage({ historyLength: history.length, locationHref: location.href }, "*");

    parent.document.querySelector("form").submit();

`;

  const frameStartingURL = codeInjectorURL(frameStartingCode);

  const frame = insertIframe(t, frameStartingURL, "the-frame");

  t.add_cleanup(() => frame.remove()); // helps avoid waiting for the slow load to finish the tests

  assert_equals(history.length, startingHistoryLength, "Inserting frame must not change history.length");

  const frameBeforeLoadedMessage = await waitForMessage();

  assert_equals(frameBeforeLoadedMessage.historyLength, startingHistoryLength, "frame's starting history.length");

  assert_equals(frameBeforeLoadedMessage.locationHref, frame.src, "frame's starting location.href");

  assert_equals(frame.contentWindow.onloadFired, undefined, "frame's onload not fired yet");

  const frameAfterFormSubmitMessage = await waitForMessage();

  assert_equals(frameAfterFormSubmitMessage.historyLength, startingHistoryLength + 1, "frame's after-submit history.length");

  assert_equals(frameAfterFormSubmitMessage.locationHref, frameEndingURL, "frame's after-submit location.href");

}, "No replace before load, triggered by cross-iframe formElement.submit()");

</script>