Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 770 insertions, 0 deletions

diff --git a/toolkit/components/timermanager/tests/unit/consumerNotifications.js b/toolkit/components/timermanager/tests/unit/consumerNotifications.js
new file mode 100644
index 0000000000..1e09207043
--- /dev/null
+++ b/toolkit/components/timermanager/tests/unit/consumerNotifications.js
@@ -0,0 +1,720 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+/* General Update Timer Manager Tests */
+
+"use strict";
+
+const Cm = Components.manager;
+
+const { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+const CATEGORY_UPDATE_TIMER = "update-timer";
+
+const PREF_APP_UPDATE_TIMERMINIMUMDELAY = "app.update.timerMinimumDelay";
+const PREF_APP_UPDATE_TIMERFIRSTINTERVAL = "app.update.timerFirstInterval";
+const PREF_APP_UPDATE_LOG_ALL = "app.update.log.all";
+const PREF_BRANCH_LAST_UPDATE_TIME = "app.update.lastUpdateTime.";
+
+const MAIN_TIMER_INTERVAL = 1000; // milliseconds
+const CONSUMER_TIMER_INTERVAL = 1; // seconds
+
+const TESTS = [
+  {
+    desc: "Test Timer Callback 0",
+    timerID: "test0-update-timer",
+    defaultInterval: "bogus",
+    prefInterval: "test0.timer.interval",
+    contractID: "@mozilla.org/test0/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("9c7ce81f-98bb-4729-adb4-4d0deb0f59e5"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 1",
+    timerID: "test1-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    prefInterval: "test1.timer.interval",
+    contractID: "@mozilla.org/test1/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("512834f3-05bb-46be-84e0-81d881a140b7"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 2",
+    timerID: "test2-update-timer",
+    defaultInterval: 86400,
+    prefInterval: "test2.timer.interval",
+    contractID: "@mozilla.org/test2/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("c8ac5027-8d11-4471-9d7c-fd692501b437"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 3",
+    timerID: "test3-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    prefInterval: "test3.timer.interval",
+    contractID: "@mozilla.org/test3/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("6b0e79f3-4ab8-414c-8f14-dde10e185727"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 4",
+    timerID: "test4-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    prefInterval: "test4.timer.interval",
+    contractID: "@mozilla.org/test4/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("2f6b7b92-e40f-4874-bfbb-eeb2412c959d"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 5",
+    timerID: "test5-update-timer",
+    defaultInterval: 86400,
+    prefInterval: "test5.timer.interval",
+    contractID: "@mozilla.org/test5/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("8a95f611-b2ac-4c7e-8b73-9748c4839731"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 6",
+    timerID: "test6-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    prefInterval: "test6.timer.interval",
+    contractID: "@mozilla.org/test6/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("2d091020-e23c-11e2-a28f-0800200c9a66"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 7",
+    timerID: "test7-update-timer",
+    defaultInterval: 86400,
+    maxInterval: CONSUMER_TIMER_INTERVAL,
+    prefInterval: "test7.timer.interval",
+    contractID: "@mozilla.org/test7/timercallback;1",
+    method: "createInstance",
+    classID: Components.ID("8e8633ae-1d70-4a7a-8bea-6e1e6c5d7742"),
+    notified: false,
+  },
+  {
+    desc: "Test Timer Callback 8",
+    timerID: "test8-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    contractID: "@mozilla.org/test8/timercallback;1",
+    classID: Components.ID("af878d4b-1d12-41f6-9a90-4e687367ecc1"),
+    notified: false,
+    lastUpdateTime: 0,
+  },
+  {
+    desc: "Test Timer Callback 9",
+    timerID: "test9-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    contractID: "@mozilla.org/test9/timercallback;1",
+    classID: Components.ID("5136b201-d64c-4328-8cf1-1a63491cc117"),
+    notified: false,
+    lastUpdateTime: 0,
+  },
+  {
+    desc: "Test Timer Callback 10",
+    timerID: "test10-update-timer",
+    defaultInterval: CONSUMER_TIMER_INTERVAL,
+    contractID: "@mozilla.org/test9/timercallback;1",
+    classID: Components.ID("1f42bbb3-d116-4012-8491-3ec4797a97ee"),
+    notified: false,
+    lastUpdateTime: 0,
+  },
+];
+
+var gUTM;
+var gNextFunc;
+
+ChromeUtils.defineLazyGetter(this, "gCompReg", function () {
+  return Cm.QueryInterface(Ci.nsIComponentRegistrar);
+});
+
+const gTest0TimerCallback = {
+  notify: function T0CB_notify(aTimer) {
+    // This can happen when another notification fails and this timer having
+    // time to fire so check other timers are successful.
+    do_throw("gTest0TimerCallback notify method should not have been called");
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest0Factory = {
+  createInstance: function T0F_createInstance(aIID) {
+    return gTest0TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest1TimerCallback = {
+  notify: function T1CB_notify(aTimer) {
+    // This can happen when another notification fails and this timer having
+    // time to fire so check other timers are successful.
+    do_throw("gTest1TimerCallback notify method should not have been called");
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimer"]),
+};
+
+const gTest1Factory = {
+  createInstance: function T1F_createInstance(aIID) {
+    return gTest1TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest2TimerCallback = {
+  notify: function T2CB_notify(aTimer) {
+    // This can happen when another notification fails and this timer having
+    // time to fire so check other timers are successful.
+    do_throw("gTest2TimerCallback notify method should not have been called");
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest2Factory = {
+  createInstance: function T2F_createInstance(aIID) {
+    return gTest2TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest3TimerCallback = {
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest3Factory = {
+  createInstance: function T3F_createInstance(aIID) {
+    return gTest3TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest4TimerCallback = {
+  notify: function T4CB_notify(aTimer) {
+    Services.catMan.deleteCategoryEntry(
+      CATEGORY_UPDATE_TIMER,
+      TESTS[4].desc,
+      true
+    );
+    TESTS[4].notified = true;
+    finished_test0thru7();
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest4Factory = {
+  createInstance: function T4F_createInstance(aIID) {
+    return gTest4TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest5TimerCallback = {
+  notify: function T5CB_notify(aTimer) {
+    Services.catMan.deleteCategoryEntry(
+      CATEGORY_UPDATE_TIMER,
+      TESTS[5].desc,
+      true
+    );
+    TESTS[5].notified = true;
+    finished_test0thru7();
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest5Factory = {
+  createInstance: function T5F_createInstance(aIID) {
+    return gTest5TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest6TimerCallback = {
+  notify: function T6CB_notify(aTimer) {
+    Services.catMan.deleteCategoryEntry(
+      CATEGORY_UPDATE_TIMER,
+      TESTS[6].desc,
+      true
+    );
+    TESTS[6].notified = true;
+    finished_test0thru7();
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest6Factory = {
+  createInstance: function T6F_createInstance(aIID) {
+    return gTest6TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest7TimerCallback = {
+  notify: function T7CB_notify(aTimer) {
+    Services.catMan.deleteCategoryEntry(
+      CATEGORY_UPDATE_TIMER,
+      TESTS[7].desc,
+      true
+    );
+    TESTS[7].notified = true;
+    finished_test0thru7();
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest7Factory = {
+  createInstance: function T7F_createInstance(aIID) {
+    return gTest7TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest8TimerCallback = {
+  notify: function T8CB_notify(aTimer) {
+    TESTS[8].notified = true;
+    TESTS[8].notifyTime = Date.now();
+    executeSoon(function () {
+      check_test8thru10(gTest8TimerCallback);
+    });
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest8Factory = {
+  createInstance: function T8F_createInstance(aIID) {
+    return gTest8TimerCallback.QueryInterface(aIID);
+  },
+};
+
+const gTest9TimerCallback = {
+  notify: function T9CB_notify(aTimer) {
+    TESTS[9].notified = true;
+    TESTS[9].notifyTime = Date.now();
+    executeSoon(function () {
+      check_test8thru10(gTest8TimerCallback);
+    });
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest10TimerCallback = {
+  notify: function T9CB_notify(aTimer) {
+    // The timer should have been unregistered before this could
+    // be called.
+    do_throw("gTest10TimerCallback notify method should not have been called");
+  },
+  QueryInterface: ChromeUtils.generateQI(["nsITimerCallback"]),
+};
+
+const gTest9Factory = {
+  createInstance: function T9F_createInstance(aIID) {
+    return gTest9TimerCallback.QueryInterface(aIID);
+  },
+};
+
+function run_test() {
+  do_test_pending();
+
+  // Set the timer to fire every second
+  Services.prefs.setIntPref(
+    PREF_APP_UPDATE_TIMERMINIMUMDELAY,
+    MAIN_TIMER_INTERVAL / 1000
+  );
+  Services.prefs.setIntPref(
+    PREF_APP_UPDATE_TIMERFIRSTINTERVAL,
+    MAIN_TIMER_INTERVAL
+  );
+  Services.prefs.setBoolPref(PREF_APP_UPDATE_LOG_ALL, true);
+
+  // Remove existing update timers to prevent them from being notified
+  for (let { data: entry } of Services.catMan.enumerateCategory(
+    CATEGORY_UPDATE_TIMER
+  )) {
+    Services.catMan.deleteCategoryEntry(CATEGORY_UPDATE_TIMER, entry, false);
+  }
+
+  gUTM = Cc["@mozilla.org/updates/timer-manager;1"]
+    .getService(Ci.nsIUpdateTimerManager)
+    .QueryInterface(Ci.nsIObserver);
+  gUTM.observe(null, "utm-test-init", "");
+
+  executeSoon(run_test0thru7);
+}
+
+function end_test() {
+  gUTM.observe(null, "profile-before-change", "");
+  do_test_finished();
+}
+
+function run_test0thru7() {
+  gNextFunc = check_test0thru7;
+  // bogus default interval
+  gCompReg.registerFactory(
+    TESTS[0].classID,
+    TESTS[0].desc,
+    TESTS[0].contractID,
+    gTest0Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[0].desc,
+    [
+      TESTS[0].contractID,
+      TESTS[0].method,
+      TESTS[0].timerID,
+      TESTS[0].prefInterval,
+      TESTS[0].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // doesn't implement nsITimerCallback
+  gCompReg.registerFactory(
+    TESTS[1].classID,
+    TESTS[1].desc,
+    TESTS[1].contractID,
+    gTest1Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[1].desc,
+    [
+      TESTS[1].contractID,
+      TESTS[1].method,
+      TESTS[1].timerID,
+      TESTS[1].prefInterval,
+      TESTS[1].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // has a last update time of now - 43200 which is half of its interval
+  let lastUpdateTime = Math.round(Date.now() / 1000) - 43200;
+  Services.prefs.setIntPref(
+    PREF_BRANCH_LAST_UPDATE_TIME + TESTS[2].timerID,
+    lastUpdateTime
+  );
+  gCompReg.registerFactory(
+    TESTS[2].classID,
+    TESTS[2].desc,
+    TESTS[2].contractID,
+    gTest2Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[2].desc,
+    [
+      TESTS[2].contractID,
+      TESTS[2].method,
+      TESTS[2].timerID,
+      TESTS[2].prefInterval,
+      TESTS[2].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // doesn't have a notify method
+  gCompReg.registerFactory(
+    TESTS[3].classID,
+    TESTS[3].desc,
+    TESTS[3].contractID,
+    gTest3Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[3].desc,
+    [
+      TESTS[3].contractID,
+      TESTS[3].method,
+      TESTS[3].timerID,
+      TESTS[3].prefInterval,
+      TESTS[3].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // already has a last update time
+  Services.prefs.setIntPref(PREF_BRANCH_LAST_UPDATE_TIME + TESTS[4].timerID, 1);
+  gCompReg.registerFactory(
+    TESTS[4].classID,
+    TESTS[4].desc,
+    TESTS[4].contractID,
+    gTest4Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[4].desc,
+    [
+      TESTS[4].contractID,
+      TESTS[4].method,
+      TESTS[4].timerID,
+      TESTS[4].prefInterval,
+      TESTS[4].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // has an interval preference that overrides the default
+  Services.prefs.setIntPref(TESTS[5].prefInterval, CONSUMER_TIMER_INTERVAL);
+  gCompReg.registerFactory(
+    TESTS[5].classID,
+    TESTS[5].desc,
+    TESTS[5].contractID,
+    gTest5Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[5].desc,
+    [
+      TESTS[5].contractID,
+      TESTS[5].method,
+      TESTS[5].timerID,
+      TESTS[5].prefInterval,
+      TESTS[5].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // has a next update time 24 hours from now
+  let nextUpdateTime = Math.round(Date.now() / 1000) + 86400;
+  Services.prefs.setIntPref(
+    PREF_BRANCH_LAST_UPDATE_TIME + TESTS[6].timerID,
+    nextUpdateTime
+  );
+  gCompReg.registerFactory(
+    TESTS[6].classID,
+    TESTS[6].desc,
+    TESTS[6].contractID,
+    gTest6Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[6].desc,
+    [
+      TESTS[6].contractID,
+      TESTS[6].method,
+      TESTS[6].timerID,
+      TESTS[6].prefInterval,
+      TESTS[6].defaultInterval,
+    ].join(","),
+    false,
+    true
+  );
+
+  // has a maximum interval set by the value of MAIN_TIMER_INTERVAL
+  Services.prefs.setIntPref(TESTS[7].prefInterval, 86400);
+  gCompReg.registerFactory(
+    TESTS[7].classID,
+    TESTS[7].desc,
+    TESTS[7].contractID,
+    gTest7Factory
+  );
+  Services.catMan.addCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[7].desc,
+    [
+      TESTS[7].contractID,
+      TESTS[7].method,
+      TESTS[7].timerID,
+      TESTS[7].prefInterval,
+      TESTS[7].defaultInterval,
+      TESTS[7].maxInterval,
+    ].join(","),
+    false,
+    true
+  );
+}
+
+function finished_test0thru7() {
+  if (
+    TESTS[4].notified &&
+    TESTS[5].notified &&
+    TESTS[6].notified &&
+    TESTS[7].notified
+  ) {
+    executeSoon(gNextFunc);
+  }
+}
+
+function check_test0thru7() {
+  Assert.ok(
+    !TESTS[0].notified,
+    "a category registered timer didn't fire due to an invalid " +
+      "default interval"
+  );
+
+  Assert.ok(
+    !TESTS[1].notified,
+    "a category registered timer didn't fire due to not implementing " +
+      "nsITimerCallback"
+  );
+
+  Assert.ok(
+    !TESTS[2].notified,
+    "a category registered timer didn't fire due to the next update " +
+      "time being in the future"
+  );
+
+  Assert.ok(
+    !TESTS[3].notified,
+    "a category registered timer didn't fire due to not having a " +
+      "notify method"
+  );
+
+  Assert.ok(TESTS[4].notified, "a category registered timer has fired");
+
+  Assert.ok(
+    TESTS[5].notified,
+    "a category registered timer fired that has an interval " +
+      "preference that overrides a default that wouldn't have fired yet"
+  );
+
+  Assert.ok(
+    TESTS[6].notified,
+    "a category registered timer has fired due to the next update " +
+      "time being reset due to a future last update time"
+  );
+
+  Assert.ok(
+    Services.prefs.prefHasUserValue(
+      PREF_BRANCH_LAST_UPDATE_TIME + TESTS[4].timerID
+    ),
+    "first of two category registered timers last update time has " +
+      "a user value"
+  );
+  Assert.ok(
+    Services.prefs.prefHasUserValue(
+      PREF_BRANCH_LAST_UPDATE_TIME + TESTS[5].timerID
+    ),
+    "second of two category registered timers last update time has " +
+      "a user value"
+  );
+
+  // Remove the category timers that should have failed
+  Services.catMan.deleteCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[0].desc,
+    true
+  );
+  Services.catMan.deleteCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[1].desc,
+    true
+  );
+  Services.catMan.deleteCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[2].desc,
+    true
+  );
+  Services.catMan.deleteCategoryEntry(
+    CATEGORY_UPDATE_TIMER,
+    TESTS[3].desc,
+    true
+  );
+  for (let { data: entry } of Services.catMan.enumerateCategory(
+    CATEGORY_UPDATE_TIMER
+  )) {
+    Services.catMan.deleteCategoryEntry(CATEGORY_UPDATE_TIMER, entry, false);
+  }
+
+  let entries = Services.catMan.enumerateCategory(CATEGORY_UPDATE_TIMER);
+  Assert.ok(
+    !entries.hasMoreElements(),
+    "no " +
+      CATEGORY_UPDATE_TIMER +
+      " categories should still be " +
+      "registered"
+  );
+
+  executeSoon(run_test8thru10);
+}
+
+function run_test8thru10() {
+  Services.prefs.setIntPref(PREF_BRANCH_LAST_UPDATE_TIME + TESTS[8].timerID, 1);
+  gCompReg.registerFactory(
+    TESTS[8].classID,
+    TESTS[8].desc,
+    TESTS[8].contractID,
+    gTest8Factory
+  );
+  gUTM.registerTimer(
+    TESTS[8].timerID,
+    gTest8TimerCallback,
+    TESTS[8].defaultInterval
+  );
+  Services.prefs.setIntPref(PREF_BRANCH_LAST_UPDATE_TIME + TESTS[9].timerID, 1);
+  gCompReg.registerFactory(
+    TESTS[9].classID,
+    TESTS[9].desc,
+    TESTS[9].contractID,
+    gTest9Factory
+  );
+  gUTM.registerTimer(
+    TESTS[9].timerID,
+    gTest9TimerCallback,
+    TESTS[9].defaultInterval
+  );
+  gUTM.registerTimer(
+    TESTS[10].timerID,
+    gTest10TimerCallback,
+    TESTS[10].defaultInterval
+  );
+  gUTM.unregisterTimer(TESTS[10].timerID);
+}
+
+function check_test8thru10(aTestTimerCallback) {
+  aTestTimerCallback.timesCalled = (aTestTimerCallback.timesCalled || 0) + 1;
+  if (aTestTimerCallback.timesCalled < 2) {
+    return;
+  }
+
+  Assert.ok(
+    TESTS[8].notified,
+    "first registerTimer registered timer should have fired"
+  );
+
+  Assert.ok(
+    TESTS[9].notified,
+    "second registerTimer registered timer should have fired"
+  );
+
+  // Check that the two events that wanted to fire at the same time
+  // happened in the expected order.
+  Assert.lessOrEqual(
+    TESTS[8].notifyTime,
+    TESTS[9].notifyTime,
+    "two timers that want to fire at the same " +
+      "should fire in the expected order"
+  );
+
+  let time = Services.prefs.getIntPref(
+    PREF_BRANCH_LAST_UPDATE_TIME + TESTS[8].timerID
+  );
+  Assert.notEqual(
+    time,
+    1,
+    "first registerTimer registered timer last update time " +
+      "should have been updated"
+  );
+
+  time = Services.prefs.getIntPref(
+    PREF_BRANCH_LAST_UPDATE_TIME + TESTS[9].timerID
+  );
+  Assert.notEqual(
+    time,
+    1,
+    "second registerTimer registered timer last update time " +
+      "should have been updated"
+  );
+
+  end_test();
+}
diff --git a/toolkit/components/timermanager/tests/unit/test_skipFirst.js b/toolkit/components/timermanager/tests/unit/test_skipFirst.js
new file mode 100644
index 0000000000..fec1a795ed
--- /dev/null
+++ b/toolkit/components/timermanager/tests/unit/test_skipFirst.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+"use strict";
+
+const { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+XPCOMUtils.defineLazyServiceGetter(
+  this,
+  "gUpdateTimerManager",
+  "@mozilla.org/updates/timer-manager;1",
+  "nsIUpdateTimerManager"
+);
+
+const PREF_APP_UPDATE_LASTUPDATETIME_FMT = "app.update.lastUpdateTime.%ID%";
+
+add_task(async function () {
+  const testId = "test_timer_id";
+  const testPref = PREF_APP_UPDATE_LASTUPDATETIME_FMT.replace(/%ID%/, testId);
+  const testInterval = 100000000; // Just needs to be longer than the test.
+
+  Services.prefs.clearUserPref(testPref);
+  gUpdateTimerManager.registerTimer(
+    testId,
+    {},
+    testInterval,
+    true /* skipFirst */
+  );
+  let prefValue = Services.prefs.getIntPref(testPref, 0);
+  Assert.notEqual(
+    prefValue,
+    0,
+    "Last update time for test timer must not be 0."
+  );
+  let nowSeconds = Date.now() / 1000; // update timer lastUpdate prefs are set in seconds.
+  Assert.ok(
+    Math.abs(nowSeconds - prefValue) < 2,
+    "Last update time for test timer must be now-ish."
+  );
+
+  gUpdateTimerManager.unregisterTimer(testId);
+});
diff --git a/toolkit/components/timermanager/tests/unit/xpcshell.toml b/toolkit/components/timermanager/tests/unit/xpcshell.toml
new file mode 100644
index 0000000000..87b7822327
--- /dev/null
+++ b/toolkit/components/timermanager/tests/unit/xpcshell.toml
@@ -0,0 +1,6 @@
+[DEFAULT]
+head = ""
+
+["consumerNotifications.js"]
+
+["test_skipFirst.js"]