browser_thumbnails_bg_destroy_browser.js

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/* Any copyright is dedicated to the Public Domain.

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

add_task(async function thumbnails_bg_destroy_browser() {

  await SpecialPowers.pushPrefEnv({

    set: [["dom.ipc.processCount", 1]],

});

  let url1 = "https://example.com/1";

  ok(!thumbnailExists(url1), "First file should not exist yet.");

  let url2 = "https://example.com/2";

  ok(!thumbnailExists(url2), "Second file should not exist yet.");

  let defaultTimeout = BackgroundPageThumbs._destroyBrowserTimeout;

  BackgroundPageThumbs._destroyBrowserTimeout = 1000;

  await bgCapture(url1);

  ok(thumbnailExists(url1), "First file should exist after capture.");

  removeThumbnail(url1);

  // arbitrary wait - intermittent failures noted after 2 seconds

  await TestUtils.waitForCondition(

    () => {

      return BackgroundPageThumbs._thumbBrowser === undefined;

},

    "BackgroundPageThumbs._thumbBrowser should eventually be discarded.",

    1000,

);

is(

    BackgroundPageThumbs._thumbBrowser,

    undefined,

    "Thumb browser should be destroyed after timeout."

);

  BackgroundPageThumbs._destroyBrowserTimeout = defaultTimeout;

  await bgCapture(url2);

  ok(thumbnailExists(url2), "Second file should exist after capture.");

  removeThumbnail(url2);

  isnot(

    BackgroundPageThumbs._thumbBrowser,

    undefined,

    "Thumb browser should exist immediately after capture."

);

});