michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: 
michael@0: var timer;
michael@0: 
michael@0: // This test XPConnect's ability to deal with a certain type of exception. In
michael@0: // particular, bug 641378 meant that if an exception had both 'message' and
michael@0: // 'result' properties, then it wouldn't successfully read the 'result' field
michael@0: // out of the exception (and sometimes crash).
michael@0: //
michael@0: // In order to make the test not fail completely on a negative result, we use
michael@0: // a timer. The first time through the timer, we throw our special exception.
michael@0: // Then, the second time through, we can test to see if XPConnect properly
michael@0: // dealt with our exception.
michael@0: var exception = {
michael@0:   message: "oops, something failed!",
michael@0: 
michael@0:   tries: 0,
michael@0:   get result() {
michael@0:     ++this.tries;
michael@0:     return 3;
michael@0:   }
michael@0: };
michael@0: 
michael@0: var callback = {
michael@0:   tries: 0,
michael@0:   notify: function (timer) {
michael@0:     if (++this.tries === 1)
michael@0:       throw exception;
michael@0: 
michael@0:     try {
michael@0:         do_check_true(exception.tries >= 1);
michael@0:     } finally {
michael@0:         timer.cancel();
michael@0:         timer = null;
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:   timer.initWithCallback(callback, 0, timer.TYPE_REPEATING_SLACK);
michael@0: }