browser_target_cached-front.js

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/* Any copyright is dedicated to the Public Domain.

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

add_task(async function () {

  gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser);

  await BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);

  const target = await createAndAttachTargetForTab(gBrowser.selectedTab);

  info("Cached front when getFront has not been called");

  let getCachedFront = target.getCachedFront("accessibility");

  ok(!getCachedFront, "no front exists");

  info("Cached front when getFront has been called but has not finished");

  const asyncFront = target.getFront("accessibility");

  getCachedFront = target.getCachedFront("accessibility");

  ok(!getCachedFront, "no front exists");

  info("Cached front when getFront has been called and has finished");

  const front = await asyncFront;

  getCachedFront = target.getCachedFront("accessibility");

  is(getCachedFront, front, "front is the same as async front");

});