browser_thumbnails_bg_captureIfMissing.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

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

add_task(async function thumbnails_bg_captureIfMissing() {

  let numNotifications = 0;

  function observe(subject, topic) {

    is(topic, "page-thumbnail:create", "got expected topic");

    numNotifications += 1;

  Services.obs.addObserver(observe, "page-thumbnail:create");

  let url = "https://example.com/";

  let file = thumbnailFile(url);

  ok(!file.exists(), "Thumbnail file should not already exist.");

  let [capturedURL] = await bgCaptureIfMissing(url);

  is(numNotifications, 1, "got notification of item being created.");

  is(capturedURL, url, "Captured URL should be URL passed to capture");

  ok(file.exists(url), "Thumbnail should be cached after capture");

  let past = Date.now() - 1000000000;

  let pastFudge = past + 30000;

  file.lastModifiedTime = past;

  Assert.less(

    file.lastModifiedTime,

    pastFudge,

    "Last modified time should stick!"

);

  [capturedURL] = await bgCaptureIfMissing(url);

  is(numNotifications, 1, "still only 1 notification of item being created.");

  is(capturedURL, url, "Captured URL should be URL passed to second capture");

  ok(file.exists(), "Thumbnail should remain cached after second capture");

  Assert.less(

    file.lastModifiedTime,

    pastFudge,

    "File should not have been overwritten"

);

  file.remove(false);

  Services.obs.removeObserver(observe, "page-thumbnail:create");

});