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diff --git a/toolkit/components/places/tests/expiration/head_expiration.js b/toolkit/components/places/tests/expiration/head_expiration.js
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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/. */
+
+var Ci = Components.interfaces;
+var Cc = Components.classes;
+var Cr = Components.results;
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/Services.jsm");
+
+// Import common head.
+{
+ let commonFile = do_get_file("../head_common.js", false);
+ let uri = Services.io.newFileURI(commonFile);
+ Services.scriptloader.loadSubScript(uri.spec, this);
+}
+
+// Put any other stuff relative to this test folder below.
+
+
+// Simulates an expiration at shutdown.
+function shutdownExpiration()
+{
+ let expire = Cc["@mozilla.org/places/expiration;1"].getService(Ci.nsIObserver);
+ expire.observe(null, "places-will-close-connection", null);
+}
+
+
+/**
+ * Causes expiration component to start, otherwise it would wait for the first
+ * history notification.
+ */
+function force_expiration_start() {
+ Cc["@mozilla.org/places/expiration;1"]
+ .getService(Ci.nsIObserver)
+ .observe(null, "testing-mode", null);
+}
+
+
+/**
+ * Forces an expiration run.
+ *
+ * @param [optional] aLimit
+ * Limit for the expiration. Pass -1 for unlimited.
+ * Any other non-positive value will just expire orphans.
+ *
+ * @return {Promise}
+ * @resolves When expiration finishes.
+ * @rejects Never.
+ */
+function promiseForceExpirationStep(aLimit) {
+ let promise = promiseTopicObserved(PlacesUtils.TOPIC_EXPIRATION_FINISHED);
+ let expire = Cc["@mozilla.org/places/expiration;1"].getService(Ci.nsIObserver);
+ expire.observe(null, "places-debug-start-expiration", aLimit);
+ return promise;
+}
+
+
+/**
+ * Expiration preferences helpers.
+ */
+
+function setInterval(aNewInterval) {
+ Services.prefs.setIntPref("places.history.expiration.interval_seconds", aNewInterval);
+}
+function getInterval() {
+ return Services.prefs.getIntPref("places.history.expiration.interval_seconds");
+}
+function clearInterval() {
+ try {
+ Services.prefs.clearUserPref("places.history.expiration.interval_seconds");
+ }
+ catch (ex) {}
+}
+
+
+function setMaxPages(aNewMaxPages) {
+ Services.prefs.setIntPref("places.history.expiration.max_pages", aNewMaxPages);
+}
+function getMaxPages() {
+ return Services.prefs.getIntPref("places.history.expiration.max_pages");
+}
+function clearMaxPages() {
+ try {
+ Services.prefs.clearUserPref("places.history.expiration.max_pages");
+ }
+ catch (ex) {}
+}
+
+
+function setHistoryEnabled(aHistoryEnabled) {
+ Services.prefs.setBoolPref("places.history.enabled", aHistoryEnabled);
+}
+function getHistoryEnabled() {
+ return Services.prefs.getBoolPref("places.history.enabled");
+}
+function clearHistoryEnabled() {
+ try {
+ Services.prefs.clearUserPref("places.history.enabled");
+ }
+ catch (ex) {}
+}
+
+/**
+ * Returns a PRTime in the past usable to add expirable visits.
+ *
+ * param [optional] daysAgo
+ * Expiration ignores any visit added in the last 7 days, so by default
+ * this will be set to 7.
+ * @note to be safe against DST issues we go back one day more.
+ */
+function getExpirablePRTime(daysAgo = 7) {
+ let dateObj = new Date();
+ // Normalize to midnight
+ dateObj.setHours(0);
+ dateObj.setMinutes(0);
+ dateObj.setSeconds(0);
+ dateObj.setMilliseconds(0);
+ dateObj = new Date(dateObj.getTime() - (daysAgo + 1) * 86400000);
+ return dateObj.getTime() * 1000;
+}