dom/tests/browser/browser_autofocus_preference.js

   1 add_task(async function () {
   2   await SpecialPowers.pushPrefEnv({ set: [["browser.autofocus", false]] });
   3
   4   const url =
   5     "data:text/html,<!DOCTYPE html><html><body><input autofocus><button autofocus></button><textarea autofocus></textarea><select autofocus></select></body></html>";
   6
   7   let loadedPromise = BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
   8   BrowserTestUtils.startLoadingURIString(gBrowser.selectedBrowser, url);
   9   await loadedPromise;
  10
  11   await new Promise(resolve => executeSoon(resolve));
  12
  13   await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
  14     is(content.document.activeElement, content.document.body, "body focused");
  15   });
  16 });