michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: 
michael@0: // 5 seconds.
michael@0: const kExpectedDelay1 = 5;
michael@0: // 1 second.
michael@0: const kExpectedDelay2 = 1;
michael@0: 
michael@0: var gStartTime1;
michael@0: var gStartTime2;
michael@0: var timer;
michael@0: 
michael@0: var observer1 = {
michael@0:   observe: function observeTC1(subject, topic, data) {
michael@0:     if (topic == "timer-callback") {
michael@0:       // Stop timer, so it doesn't repeat (if test runs slowly).
michael@0:       timer.cancel();
michael@0: 
michael@0:       // Actual delay may not be exact, so convert to seconds and round.
michael@0:       do_check_eq(Math.round((Date.now() - gStartTime1) / 1000),
michael@0:                   kExpectedDelay1);
michael@0: 
michael@0:       timer = null;
michael@0: 
michael@0:       do_print("1st timer triggered (before being cancelled). Should not have happened!");
michael@0:       do_check_true(false);
michael@0:     }
michael@0:   }
michael@0: };
michael@0: 
michael@0: var observer2 = {
michael@0:   observe: function observeTC2(subject, topic, data) {
michael@0:     if (topic == "timer-callback") {
michael@0:       // Stop timer, so it doesn't repeat (if test runs slowly).
michael@0:       timer.cancel();
michael@0: 
michael@0:       // Actual delay may not be exact, so convert to seconds and round.
michael@0:       do_check_eq(Math.round((Date.now() - gStartTime2) / 1000),
michael@0:                   kExpectedDelay2);
michael@0: 
michael@0:       timer = null;
michael@0: 
michael@0:       do_test_finished();
michael@0:     }
michael@0:   }
michael@0: };
michael@0: 
michael@0: function run_test() {
michael@0:   do_test_pending();
michael@0: 
michael@0:   timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
michael@0: 
michael@0:   // Initialize the timer (with some delay), then cancel it.
michael@0:   gStartTime1 = Date.now();
michael@0:   timer.init(observer1, kExpectedDelay1 * 1000, timer.TYPE_REPEATING_PRECISE);
michael@0:   timer.cancel();
michael@0: 
michael@0:   // Re-initialize the timer (with a different delay).
michael@0:   gStartTime2 = Date.now();
michael@0:   timer.init(observer2, kExpectedDelay2 * 1000, timer.TYPE_REPEATING_PRECISE);
michael@0: }