1 files changed, 46 insertions, 0 deletions
diff --git a/tests/test-util.js b/tests/test-util.js
index 552868f..2104a2e 100644
--- a/tests/test-util.js
+++ b/tests/test-util.js
@@ -48,6 +48,52 @@ var areArraysEqual = function areArraysEqual(array1, array2) {
     return true;
 };
 
+// testing util.heir
+exports.ensureHeir = function (test) {
+    var fedlimid = {}, naoise = {};
+
+    function Father(x) {
+        this.family = x;
+    }
+    
+    Father.prototype.getFamily = function getFamily() {
+        return this.family;
+    };
+
+    function Son(x, w) {
+        Father.call(this, x);
+        this.wife = w;
+    }
+        
+    Son.prototype = util.heir(Father);
+    Son.prototype.constructor = Son;
+    
+    Son.prototype.getWife = function getWife() {
+        return this.wife;
+    };
+    
+    Son.prototype.getFamily = function getFamily() {
+        var upFamily =
+            Father.prototype.getFamily.call(this);
+        return upFamily + ", " + this.wife;
+    };
+    
+    // for curious and non-Celtic
+    // http://en.wikipedia.org/wiki/Deirdre :)
+    fedlimid = new Father("mac Daill");
+    naoise = new Son("Usnech", "Deirdre");
+    
+    test.assertEqual(fedlimid.getFamily(), "mac Daill",
+        "checking creation of new simple object");
+    
+    test.assertEqual(naoise.getWife(), "Deirdre",
+        "checking creation of new daughter object");
+
+    test.assertEqual(naoise.getFamily(), "Usnech, Deirdre",
+        "checking creation of new overloaded method");
+};
+
+
 // testing util.isInList
 exports.ensureIsInListTrue = function (test) {
     test.assert(util.isInList("a", ["a"]),