gecko/toolkit/mozapps/extensions/test/unit/test_bug474988.js

95 lines
3.6 KiB
JavaScript

/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Dave Townsend <dtownsend@oxymoronical.com>.
*
* Portions created by the Initial Developer are Copyright (C) 2009
* 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 *****
*/
var installListenerA = {};
var installListenerB = {};
var installListenerC = {};
var installListenerD = {};
var installListenerE = {};
function run_test() {
createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "2", "1.9");
startupEM();
// Add some listeners
do_check_eq(gEM.addInstallListener(installListenerA), 0);
do_check_eq(gEM.addInstallListener(installListenerB), 1);
do_check_eq(gEM.addInstallListener(installListenerC), 2);
// Now stack is ABC
// Should get back the same id if adding the same listener twice
do_check_eq(gEM.addInstallListener(installListenerA), 0);
do_check_eq(gEM.addInstallListener(installListenerB), 1);
do_check_eq(gEM.addInstallListener(installListenerC), 2);
// Stack is still ABC
// Removing a listener shouldn't affect the id of the others
gEM.removeInstallListenerAt(0);
do_check_eq(gEM.addInstallListener(installListenerB), 1);
do_check_eq(gEM.addInstallListener(installListenerC), 2);
// Stack is .BC
// Adding a new listener should still give a higher id than previously
do_check_eq(gEM.addInstallListener(installListenerD), 3);
// Stack is .BCD
// Removing and re-adding the highest listener should give the same result.
gEM.removeInstallListenerAt(3);
do_check_eq(gEM.addInstallListener(installListenerE), 3);
// Stack is .BCE
do_check_eq(gEM.addInstallListener(installListenerD), 4);
gEM.removeInstallListenerAt(3);
do_check_eq(gEM.addInstallListener(installListenerE), 5);
// Stack is .BC.DE
// Stack should shorten down to the last listener
gEM.removeInstallListenerAt(4);
gEM.removeInstallListenerAt(5);
do_check_eq(gEM.addInstallListener(installListenerD), 3);
// Stack is .BCD
// Stack should get down to 0
gEM.removeInstallListenerAt(1);
gEM.removeInstallListenerAt(2);
gEM.removeInstallListenerAt(3);
do_check_eq(gEM.addInstallListener(installListenerE), 0);
gEM.removeInstallListenerAt(0);
// Stack is empty
}