docshell/test/chrome/test_open_and_immediately_close_opener.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4   <title>Test for Bug 1702678</title>
   5   <meta charset="utf-8">
   6   <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
   7   <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
   8 </head>
   9 <body>
  10 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1702678">Mozilla Bug 1702678</a>
  11
  12 <script type="application/javascript">
  13 "use strict";
  14
  15 const HTML = `
  16 <!DOCTYPE html>
  17 <html>
  18 <head>
  19   <meta charset="utf-8">
  20   <script>
  21     // We need to queue a promise reaction job whilch will close the window
  22     // during the nested event loop spun up by the window opening code.
  23     Promise.resolve().then(() => {
  24       window.close();
  25     });
  26     window.open("data:text/html,Hello");
  27   <\/script>
  28 </head>
  29 </html>
  30 `;
  31
  32 add_task(async function() {
  33   // This bug only manifests when opening tabs in new windows.
  34   await SpecialPowers.pushPrefEnv({
  35     set: [["browser.link.open_newwindow", 2]],
  36   });
  37
  38   // Create a window in a new BrowsingContextGroup so that it will be the last
  39   // window in the group when it closes, and the group will be destroyed.
  40   window.open(`data:text/html,${encodeURIComponent(HTML)}`, "", "noopener");
  41
  42   // Make a few trips through the event loop to ensure we've had a chance to
  43   // open and close the relevant windows.
  44   for (let i = 0; i < 10; i++) {
  45     await new Promise(resolve => setTimeout(resolve, 0));
  46   }
  47
  48   ok(true, "We didn't crash");
  49 });
  50 </script>
  51
  52 </body>
  53 </html>
  54