test_bug1777572.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>bug 1777572</title>

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

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

  <script>

  SimpleTest.waitForExplicitFinish();

  async function testCSPInheritance(closeOpenerWindow) {

    let url = "file_bug1777572.html";

    if (closeOpenerWindow) {

      url += "?close";

    let win = window.open(url);

    return new Promise((resolve) => {

      window.addEventListener("message", (event) => {

        ok(event.data.includes("img-src"), "Got expected data " + event.data);

        resolve();

      }, { once: true});

});

  async function run() {

    // Test that CSP inheritance to the initial about:blank works the same way

    // whether or not the opener is already closed when window.open is called.

    await testCSPInheritance(false);

    await testCSPInheritance(true);

    SimpleTest.finish();

  </script>

</head>

<body onload="run()">

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

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

<pre id="test"></pre>

</body>

</html>