resolving when immediately on empty array

package.json

@@ -1,6 +1,6 @@
 {
     "name": "pzero",
-    "version": "0.3.0",
+    "version": "0.3.1",
     "description": "Small promise lib",
     "keywords": [ "promise", "deferred", "flow" ],
     "author": {

pzero.js

@@ -172,20 +172,24 @@ pzero.when = function(promises) {
     var result = [];
     var len = promises.length;
 
-    promises.forEach(function(current, i) {
-        current
-            .then(function(value) {
-                result[i] = value;
-                len--;
-
-                if (!len) {
-                    promise.resolve(result);
-                }
-            })
-            .esle(function(value) {
-                promise.reject(value);
-            });
-    });
+    if (len) {
+        promises.forEach(function(current, i) {
+            current
+                .then(function(value) {
+                    result[i] = value;
+                    len--;
+
+                    if (!len) {
+                        promise.resolve(result);
+                    }
+                })
+                .esle(function(value) {
+                    promise.reject(value);
+                });
+        });
+    } else {
+        promise.resolve([]);
+    }
 
     return promise;
 };

test/spec/pzero.js

@@ -146,6 +146,10 @@ describe('promise', function() {
         })
     });
 
+    it('should not wait for empty array of promises', function(done) {
+        pzero.when([]).then(function() { done(); });
+    });
+
     it('should wait for promise', function(done) {
         pzero.when([this.promise]).then(function(data) {
             expect(data[0]).to.eql(1);