value_of(arr).should_have(4, 'items'); 
	map_using_generics: function(){		var arr = (function() {			return arguments;		})(1, 2, 3, 0);		arr = Array.map(arr, function(item){			return (item + 1);		});		value_of(arr).should_be([2,3,4,1]);	},
9299	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9299/1df74374a0f0b6727279f66d73d68b2ad06800b1/Array.js/clean/Spec/Native/Array.js