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