From aa1d38b007a39441f09b1f686d6ed454af315218 Mon Sep 17 00:00:00 2001
From: Mike Gerwitz <mike@mikegerwitz.com>
Date: Sun, 9 Jan 2011 01:46:46 -0500
Subject: [PATCH] Added deep cloning for objects

---
 lib/util.js             |  5 ++++-
 test/test-util-clone.js | 19 ++++++++++++++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index 7b9a19e..6041531 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -145,7 +145,10 @@ exports.clone = function clone( data, deep )
         {
             if ( hasOwn.call( data, prop ) )
             {
-                newobj[ prop ] = data[ prop ];
+                newobj[ prop ] = ( deep )
+                    ? clone( data[ prop ] )
+                    : data[ prop ]
+                ;
             }
         }
 
diff --git a/test/test-util-clone.js b/test/test-util-clone.js
index 28154e6..4305618 100644
--- a/test/test-util-clone.js
+++ b/test/test-util-clone.js
@@ -65,8 +65,11 @@ for ( prop in obj )
 
 //
 // deep clone
-var deep_arr  = [ [ 1, 2 ], [ 3, 4 ], [ 5, [ 6, 7 ] ], { a: 1 } ],
+var deep_arr = [ [ 1, 2 ], [ 3, 4 ], [ 5, [ 6, 7 ] ], { a: 1 } ],
+    deep_obj = { a: [ 1 ], b: [ 2 ], c: { d: 3 } },
+
     deep_arr2 = util.clone( deep_arr, true ),
+    deep_obj2 = util.clone( deep_obj, true ),
 
     deep_i = 0;
 
@@ -77,6 +80,12 @@ assert.deepEqual(
     "Deep cloned values are equal"
 );
 
+assert.deepEqual(
+    deep_obj2,
+    deep_obj,
+    "Deep cloned values are equal"
+);
+
 deep_i = deep_arr.length;
 while ( deep_i-- )
 {
@@ -86,3 +95,11 @@ while ( deep_i-- )
     );
 }
 
+for ( prop in deep_obj )
+{
+    assert.ok(
+        ( deep_obj2[ prop ] !== deep_obj[ prop ] ),
+        "Deep cloned object's values are cloned (" + prop + ")"
+    );
+}
+