Add _.cloneDeep alias of _.clone(…, true). [closes #140]

Former-commit-id: b71397d5c5b71cb28a60eb4656cbaf12f6b03d1a

test/test-build.js

@@ -147,6 +147,7 @@
   var objectsMethods = [
     'assign',
     'clone',
+    'cloneDeep',
     'defaults',
     'extend',
     'forIn',
@@ -248,6 +249,7 @@
   /** List of methods used by Underscore */
   var underscoreMethods = _.without.apply(_, [allMethods].concat([
     'bindKey',
+    'cloneDeep',
     'forIn',
     'forOwn',
     'isPlainObject',

test/test.js

@@ -243,7 +243,7 @@
 
   /*--------------------------------------------------------------------------*/
 
-  QUnit.module('lodash.clone');
+  QUnit.module('cloning');
 
   (function() {
     function Klass() { this.a = 1; }
@@ -277,7 +277,7 @@
 
     _.forOwn(objects, function(object, key) {
       test('should deep clone ' + key, function() {
-        var clone = _.clone(object, true);
+        var clone = _.cloneDeep(object);
         ok(_.isEqual(object, clone));
 
         if (_.isObject(object)) {
@@ -291,7 +291,7 @@
     _.forOwn(nonCloneable, function(object, key) {
       test('should not clone ' + key, function() {
         strictEqual(_.clone(object), object);
-        strictEqual(_.clone(object, true), object);
+        strictEqual(_.cloneDeep(object), object);
       });
     });
 
@@ -304,7 +304,7 @@
 
     test('should deep clone `index` and `input` array properties', function() {
       var array = /x/.exec('x'),
-          actual = _.clone(array, true);
+          actual = _.cloneDeep(array);
 
       equal(actual.index, 0);
       equal(actual.input, 'x');
@@ -319,15 +319,15 @@
       object.foo.b.foo.c = object;
       object.bar.b = object.foo.b;
 
-      var clone = _.clone(object, true);
+      var clone = _.cloneDeep(object);
       ok(clone.bar.b === clone.foo.b && clone === clone.foo.b.foo.c && clone !== object);
     });
 
     test('should clone problem JScript properties (test in IE < 9)', function() {
       deepEqual(_.clone(shadowed), shadowed);
       notEqual(_.clone(shadowed), shadowed);
-      deepEqual(_.clone(shadowed, true), shadowed);
-      notEqual(_.clone(shadowed, true), shadowed);
+      deepEqual(_.cloneDeep(shadowed), shadowed);
+      notEqual(_.cloneDeep(shadowed), shadowed);
     });
   }(1, 2, 3));