1 files changed, 36 insertions, 0 deletions
diff --git a/toolkit/components/places/tests/expiration/test_notifications.js b/toolkit/components/places/tests/expiration/test_notifications.js
new file mode 100644
index 0000000000..d52319a9c9
--- /dev/null
+++ b/toolkit/components/places/tests/expiration/test_notifications.js
@@ -0,0 +1,36 @@
+/* -*- 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/. */
+
+"use strict";
+
+/**
+ * What this is aimed to test:
+ *
+ * Ensure that History (through category cache) notifies us just once.
+ */
+
+var gObserver = {
+  notifications: 0,
+  observe(aSubject, aTopic, aData) {
+    this.notifications++;
+  },
+};
+Services.obs.addObserver(gObserver, PlacesUtils.TOPIC_EXPIRATION_FINISHED);
+
+add_task(async function test_history_expirations_notify_just_once() {
+  // Set interval to a large value so we don't expire on it.
+  setInterval(3600); // 1h
+
+  promiseForceExpirationStep(1);
+
+  await new Promise(resolve => {
+    do_timeout(2000, resolve);
+  });
+
+  Assert.equal(gObserver.notifications, 1);
+
+  Services.obs.removeObserver(gObserver, PlacesUtils.TOPIC_EXPIRATION_FINISHED);
+});