test iterator

test_iterator.js

describe('iterator', function() {
    it('test', function() {
        var Iter = function(data){
            this.index = 0;
            this.data = data;
        };
        Iter.prototype = {
            next: function(){
                var elem = this.data[this.index];
                this.index += 1;
                return elem;
            },
            hasNext: function(){
                return this.index < this.data.length;
            },
            seek: function(reindex){
                this.index = reindex;
            }
        };
        var data = [1, 2, 3, 4, 5];
        var iter = new Iter(data);
        while(iter.hasNext()){
            console.log(iter.next());
        }
    });
});