test_postMessage_override.html

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<!DOCTYPE html>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=postMessage

-->

<head>

  <title>postMessage override test</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=postMessage">Mozilla Bug 387706</a>

<p id="display"></p>

<div id="content" style="display: none"></div>

<iframe src="http://example.org:8000/tests/dom/tests/mochitest/whatwg/postMessage_override_helper.html"></iframe>

<pre id="test">

<script class="testbody" type="application/javascript">

/** Test for Bug 387706 **/

SimpleTest.waitForExplicitFinish();

async function run() {

  function ping(win, msg) {

    return new Promise(resolve => {

      window.addEventListener("message", evt => {

        is(evt.source, win, "Response should come from the correct window");

        is(evt.data, msg, "Should get the correct response");

        resolve();

      }, { once: true });

      win.postMessage(msg, "http://example.org:8000");

});

  await ping(frames[0], "PASS 1");

  await ping(frames[0], "PASS 2");

  SimpleTest.finish();

window.addEventListener("load", run);

</script>

</pre>

</body>

</html>