browser_sizeToContent_tab.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

add_task(async function test_sizeToContent_in_parent_process_tab() {

  let width = window.outerWidth;

  let height = window.outerHeight;

  await BrowserTestUtils.withNewTab(

    "chrome://mochitests/content/browser/dom/base/test/empty.html",

    async browser => {

      ok(!browser.isRemoteBrowser, "chrome:// document loads in the parent");

      browser.contentWindow.sizeToContent();

      await new Promise(r => requestAnimationFrame(() => setTimeout(r, 0)));

      is(window.outerWidth, width, "outerWidth unchanged");

      is(window.outerHeight, height, "outerHeight unchanged");

);

});