mozilla-central/modules/libpref/test/unit/test_bug577950.js (file symbol)

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/* 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() {
var observer = {
QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
observe: function observe() {
// Don't do anything.
},
};
/* Set the same pref twice. This shouldn't leak. */
Services.prefs.addObserver("UserPref.nonexistent.setIntPref", observer);
Services.prefs.addObserver("UserPref.nonexistent.setIntPref", observer);
}