diff -r 000000000000 -r 6474c204b198 toolkit/components/places/tests/bookmarks/test_477583_json-backup-in-future.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/places/tests/bookmarks/test_477583_json-backup-in-future.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,57 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* 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/. */
+
+function run_test() {
+  do_test_pending();
+
+  Task.spawn(function() {
+    let backupFolder = yield PlacesBackups.getBackupFolder();
+    let bookmarksBackupDir = new FileUtils.File(backupFolder);
+    // Remove all files from backups folder.
+    let files = bookmarksBackupDir.directoryEntries;
+    while (files.hasMoreElements()) {
+      let entry = files.getNext().QueryInterface(Ci.nsIFile);
+      entry.remove(false);
+    }
+
+    // Create a json dummy backup in the future.
+    let dateObj = new Date();
+    dateObj.setYear(dateObj.getFullYear() + 1);
+    let name = PlacesBackups.getFilenameForDate(dateObj);
+    do_check_eq(name, "bookmarks-" + dateObj.toLocaleFormat("%Y-%m-%d") + ".json");
+    let files = bookmarksBackupDir.directoryEntries;
+    while (files.hasMoreElements()) {
+      let entry = files.getNext().QueryInterface(Ci.nsIFile);
+      if (PlacesBackups.filenamesRegex.test(entry.leafName))
+        entry.remove(false);
+    }
+
+    let futureBackupFile = bookmarksBackupDir.clone();
+    futureBackupFile.append(name);
+    futureBackupFile.create(Ci.nsILocalFile.NORMAL_FILE_TYPE, 0600);
+    do_check_true(futureBackupFile.exists());
+
+    do_check_eq((yield PlacesBackups.getBackupFiles()).length, 0);
+
+    yield PlacesBackups.create();
+    // Check that a backup for today has been created.
+    do_check_eq((yield PlacesBackups.getBackupFiles()).length, 1);
+    let mostRecentBackupFile = yield PlacesBackups.getMostRecentBackup();
+    do_check_neq(mostRecentBackupFile, null);
+    let todayFilename = PlacesBackups.getFilenameForDate();
+    do_check_true(PlacesBackups.filenamesRegex.test(OS.Path.basename(mostRecentBackupFile)));
+
+    // Check that future backup has been removed.
+    do_check_false(futureBackupFile.exists());
+
+    // Cleanup.
+    mostRecentBackupFile = new FileUtils.File(mostRecentBackupFile);
+    mostRecentBackupFile.remove(false);
+    do_check_false(mostRecentBackupFile.exists());
+
+    do_test_finished()
+  });
+}