Update unit tests

red/nodes/Flow.js

@@ -207,12 +207,12 @@ function diffNodeConfigs(oldNode,newNode) {
 var subflowInstanceRE = /^subflow:(.+)$/;
 
 function Flow(config) {
+    
     this.activeNodes = {};
     this.subflowInstanceNodes = {};
 
     this.parseConfig(config);
     
-    
 }
 
 Flow.prototype.parseConfig = function(config) {
@@ -385,6 +385,14 @@ Flow.prototype.getFlow = function() {
     return this.config;
 }
 
+Flow.prototype.eachNode = function(callback) {
+    for (var id in this.activeNodes) {
+        if (this.activeNodes.hasOwnProperty(id)) {
+            callback(this.activeNodes[id]);
+        }
+    }
+}
+
 Flow.prototype.applyConfig = function(config,type) {
     var diff = this.diffFlow(config);
     //console.log(diff);