+ var empty = {};
+ var optionsWithLength = { foo: { length: -1 } };
+ jQuery.extend(true, empty, optionsWithLength);
+ same( empty.foo, optionsWithLength.foo, "The length property must copy correctly" );
+
+ empty = {};
+ var optionsWithDate = { foo: { date: new Date } };
+ jQuery.extend(true, empty, optionsWithDate);
+ same( empty.foo, optionsWithDate.foo, "Dates copy correctly" );
+
+ var myKlass = function() {};
+ var customObject = new myKlass();
+ var optionsWithCustomObject = { foo: { date: customObject } };
+ empty = {};
+ jQuery.extend(true, empty, optionsWithCustomObject);
+ ok( empty.foo && empty.foo.date === customObject, "Custom objects copy correctly (no methods)" );
+
+ // Makes the class a little more realistic
+ myKlass.prototype = { someMethod: function(){} };
+ empty = {};
+ jQuery.extend(true, empty, optionsWithCustomObject);
+ ok( empty.foo && empty.foo.date === customObject, "Custom objects copy correctly" );
+
+ var ret = jQuery.extend(true, { foo: 4 }, { foo: new Number(5) } );
+ ok( ret.foo == 5, "Wrapped numbers copy correctly" );
+