test_memory_db_support.js
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Download Manager Test Code.
*
* The Initial Developer of the Original Code is
* Ehsan Akhgari <ehsan.akhgari@gmail.com>.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// This tests the switching of the download manager database types between disk
// and memory based databases. This feature was added in bug 457110.
const nsIDownloadManager = Ci.nsIDownloadManager;
const dm = Cc["@mozilla.org/download-manager;1"].getService(nsIDownloadManager);
function run_test() {
let observer = dm.QueryInterface(Ci.nsIObserver);
// make sure the initial disk-based DB is initialized correctly
let connDisk = dm.DBConnection;
do_check_true(connDisk.connectionReady);
do_check_neq(connDisk.databaseFile, null);
// switch to a disk DB -- should be a no-op
observer.observe(null, "dlmgr-switchdb", "disk");
// make sure that the database has not changed
do_check_true(dm.DBConnection.connectionReady);
do_check_neq(dm.DBConnection.databaseFile, null);
do_check_true(connDisk.databaseFile.equals(dm.DBConnection.databaseFile));
connDisk = dm.DBConnection;
// switch to a memory DB
observer.observe(null, "dlmgr-switchdb", "memory");
// make sure the DB is has been switched correctly
let connMemory = dm.DBConnection;
do_check_true(connMemory.connectionReady);
do_check_eq(connMemory.databaseFile, null);
// switch to a memory DB -- should be a no-op
observer.observe(null, "dlmgr-switchdb", "memory");
// make sure that the database is still memory based
connMemory = dm.DBConnection;
do_check_true(connMemory.connectionReady);
do_check_eq(connMemory.databaseFile, null);
// switch back to the disk DB
observer.observe(null, "dlmgr-switchdb", "disk");
// make sure that the disk database is initialized correctly
do_check_true(dm.DBConnection.connectionReady);
do_check_neq(dm.DBConnection.databaseFile, null);
do_check_true(connDisk.databaseFile.equals(dm.DBConnection.databaseFile));
}