test_groupLimit.js

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/**

 * Any copyright is dedicated to the Public Domain.

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

*/

add_task(async function testSteps() {

  const groupLimitKB = 10 * 1024;

  const globalLimitKB = groupLimitKB * 5;

  const originLimit = 10 * 1024;

  const urls = [

    "http://example.com",

    "http://test1.example.com",

    "https://test2.example.com",

    "http://test3.example.com:8080",

];

  const data = {};

  data.sizeKB = 5 * 1024;

  data.key = "A";

  data.value = repeatChar(data.sizeKB * 1024 - data.key.length, ".");

  data.urlCount = groupLimitKB / data.sizeKB;

  info("Setting pref");

  Services.prefs.setBoolPref(

    "dom.storage.enable_unsupported_legacy_implementation",

    false

);

  Services.prefs.setBoolPref("dom.storage.snapshot_reusing", false);

  info("Setting limits");

  setGlobalLimit(globalLimitKB);

  let request = clear();

  await requestFinished(request);

  setOriginLimit(originLimit);

  info("Getting storages");

  let storages = [];

  for (let i = 0; i < urls.length; i++) {

    let storage = getLocalStorage(getPrincipal(urls[i]));

    storages.push(storage);

  info("Filling up the whole group");

  for (let i = 0; i < data.urlCount; i++) {

    storages[i].setItem(data.key, data.value);

    await returnToEventLoop();

  info("Verifying no more data can be written");

  for (let i = 0; i < urls.length; i++) {

    try {

      storages[i].setItem("B", "");

      ok(false, "Should have thrown");

    } catch (ex) {

      ok(true, "Did throw");

      ok(DOMException.isInstance(ex), "Threw DOMException");

      is(ex.name, "QuotaExceededError", "Threw right DOMException");

      is(ex.code, NS_ERROR_DOM_QUOTA_EXCEEDED_ERR, "Threw with right code");

  info("Clearing first origin");

  storages[0].clear();

  // Let the internal snapshot finish (usage is not descreased until all

  // snapshots finish)..

  await returnToEventLoop();

  info("Verifying more data can be written");

  for (let i = 0; i < urls.length; i++) {

    storages[i].setItem("B", "");

});