mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 13:45:27 +00:00
35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
|
|
* http://creativecommons.org/licenses/publicdomain/ */
|
|
|
|
// Regression test for bug 345529 - crash removing an observer during an
|
|
// nsPref:changed notification.
|
|
function run_test() {
|
|
const Cc = Components.classes;
|
|
const Ci = Components.interfaces;
|
|
const PREF_NAME = "testPref";
|
|
|
|
var prefs = Cc["@mozilla.org/preferences-service;1"]
|
|
.getService(Ci.nsIPrefBranch);
|
|
var observer = {
|
|
QueryInterface: function QueryInterface(aIID) {
|
|
if (aIID.equals(Ci.nsIObserver) ||
|
|
aIID.equals(Ci.nsISupports))
|
|
return this;
|
|
throw Components.results.NS_NOINTERFACE;
|
|
},
|
|
|
|
observe: function observe(aSubject, aTopic, aState) {
|
|
prefs.removeObserver(PREF_NAME, observer);
|
|
}
|
|
}
|
|
prefs.addObserver(PREF_NAME, observer, false);
|
|
|
|
prefs.setCharPref(PREF_NAME, "test0")
|
|
// This second call isn't needed on a clean profile: it makes sure
|
|
// the observer gets called even if the pref already had the value
|
|
// "test0" before this test.
|
|
prefs.setCharPref(PREF_NAME, "test1")
|
|
|
|
do_check_true(true);
|
|
}
|