ensure transform always returns an array

Author: Michael

index.js

@@ -76,9 +76,9 @@ exports.DataTransform = function(data, map){
 		transform : function(context) {
 
 			var value = this.getValue(data, map.list);
-			var normalized = {};
-					
-			if(value) {
+			var normalized = [];
+
+			if(!_.isEmpty(value)) {
 				var list = this.getList();
 				normalized = map.item ? _.map(list, _.bind(this.iterator, this, map.item)) : list;
 				normalized = _.bind(this.operate, this, normalized)(context);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-json-transform",
-  "version": "1.0.16",
+  "version": "1.0.17",
   "description": "A node module for transforming and performing operations on JSON.",
   "main": "index.js",
   "scripts": {

test/nodeDataTransformSpec.js

@@ -347,4 +347,33 @@ describe("node-json-transform", function() {
 
 	});
 
+	it("should exclude data if not specified", function(){
+		
+		var data = {
+			posts: [
+				{name: "peter", unwanted: true},
+				{name: "paul", unwanted: true},
+				{name: "marry", unwanted:true}
+			]
+		};
+
+		var map = {
+			list: 'posts',
+			item: {
+				name: 'name'
+			}
+		};
+
+		var dataTransform = DataTransform(data, map);
+
+		var result = dataTransform.transform();
+
+		expect(result).toEqual([
+			{name: "peter"},
+			{name: "paul"},
+			{name: "marry"}
+		]);
+
+	});
+
 });

test/transformContextSpec.js

@@ -61,4 +61,11 @@ describe("node-json-transform", function() {
 
 	});
 
+	it("should always return an array", function() {
+
+    var dataTransform = DataTransform({}, {});
+    expect(_.isArray(dataTransform.transform())).toEqual(true);
+
+	});
+
 });