test_incremental_vacuum.js

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/* Any copyright is dedicated to the Public Domain.

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

// Tests incremental vacuum of the favicons database.

const { PlacesDBUtils } = ChromeUtils.importESModule(

  "resource://gre/modules/PlacesDBUtils.sys.mjs"

);

add_task(async function () {

  let icon = {

    file: do_get_file("noise.png"),

    mimetype: "image/png",

};

  let url = "http://foo.bar/";

  await PlacesTestUtils.addVisits(url);

  for (let i = 0; i < 10; ++i) {

    let iconUri = NetUtil.newURI("http://mozilla.org/" + i);

    let data = readFileData(icon.file);

    PlacesUtils.favicons.replaceFaviconData(iconUri, data, icon.mimetype);

    await setFaviconForPage(url, iconUri);

  let promise = TestUtils.topicObserved("places-favicons-expired");

  PlacesUtils.favicons.expireAllFavicons();

  await promise;

  let db = await PlacesUtils.promiseDBConnection();

  let state = (

    await db.execute("PRAGMA favicons.auto_vacuum")

  )[0].getResultByIndex(0);

  Assert.equal(state, 2, "auto_vacuum should be incremental");

  let count = (

    await db.execute("PRAGMA favicons.freelist_count")

  )[0].getResultByIndex(0);

  info(`Found ${count} freelist pages`);

  let log = await PlacesDBUtils.incrementalVacuum();

  info(log);

  let newCount = (

    await db.execute("PRAGMA favicons.freelist_count")

  )[0].getResultByIndex(0);

  info(`Found ${newCount} freelist pages`);

  Assert.ok(

    newCount < count,

    "The number of freelist pages should have reduced"

);

});