once() and removeListener for RemoteEmitter

lib/events.js

@@ -88,8 +88,15 @@ RemoteEmitter.prototype.attach = function (conn) {
                     if (i >= 0) events[name].splice(i,1);
                     self.removeListener(name, f);
                 }
-            }
+            },
+            once : function (name, f) {
+                ev.on(name, function g () {
+                    ev.off(name, g);
+                    f.apply(ev, arguments);
+                });
+            },
         };
+        ev.removeListener = ev.off;
 
         conn.on('end', function () {
             Object.keys(events).forEach(function (name) {

package.json

@@ -1,6 +1,6 @@
 {
     "name" : "dnode",
-    "version" : "0.3.5",
+    "version" : "0.3.6",
     "description" : "Asynchronous, bidirectional remote method calls with transparently wrapped callbacks",
     "modules" : {
         "index" : "./lib/dnode",

test/events.js

@@ -24,7 +24,7 @@ exports['remote emitters'] = function (assert) {
         return moo.attach(conn);
     }).listen(port);
 
-    var got = { moo : false, tied : [ false, false ] };
+    var got = { moo : 0, tied : [ false, false ] };
 
     server.on('ready', function () {
         DNode.connect(port, function (remote) {
@@ -33,8 +33,8 @@ exports['remote emitters'] = function (assert) {
             });
 
             remote.subscribe(function (ev) {
-                ev.on('moo', function () {
-                    got.moo = true;
+                ev.once('moo', function () {
+                    got.moo ++;
                 });
             });
 
@@ -61,7 +61,7 @@ exports['remote emitters'] = function (assert) {
     });
 
     setTimeout(function () {
-        assert.ok(got.moo);
+        assert.equal(got.moo, 1);
         assert.ok(got.tied[0]);
         assert.ok(got.tied[1]);
         server.end();