michael@0: function run_test() {
michael@0:   var stream = Cc["@mozilla.org/io/string-input-stream;1"].
michael@0:     createInstance(Ci.nsISupportsCString);
michael@0:   stream.data = "foo bar baz";
michael@0: 
michael@0:   var pump = Cc["@mozilla.org/network/input-stream-pump;1"].
michael@0:     createInstance(Ci.nsIInputStreamPump);
michael@0:   pump.init(stream, -1, -1, 0, 0, false);
michael@0: 
michael@0:   // When we pass a null listener argument too asyncRead we expect it to throw
michael@0:   // instead of crashing.
michael@0:   try {
michael@0:     pump.asyncRead(null, null);
michael@0:   }
michael@0:   catch (e) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   do_throw("asyncRead didn't throw when passed a null listener argument.");
michael@0: }