Cu.import("resource://gre/modules/Services.jsm"); function makeURI(str) { return Components.classes["@mozilla.org/network/io-service;1"] .getService(Components.interfaces.nsIIOService) .newURI(str, null, null); } function run_test() { // Allow all cookies. Services.prefs.setIntPref("network.cookie.cookieBehavior", 0); var serv = Components.classes["@mozilla.org/cookieService;1"] .getService(Components.interfaces.nsICookieService); var uri = makeURI("http://example.com/"); // Try an expiration time before the epoch serv.setCookieString(uri, null, "test=test; path=/; domain=example.com; expires=Sun, 31-Dec-1899 16:00:00 GMT;", null); do_check_eq(serv.getCookieString(uri, null), null); // Now sanity check serv.setCookieString(uri, null, "test2=test2; path=/; domain=example.com;", null); do_check_eq(serv.getCookieString(uri, null), "test2=test2"); }