michael@0: // Superficial tests for iterators created by Array.prototype.iterator
michael@0: 
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: var proto = Object.getPrototypeOf([][std_iterator]());
michael@0: assertEq(Object.getPrototypeOf(proto), Iterator.prototype);
michael@0: proto = Object.getPrototypeOf([].keys());
michael@0: assertEq(Object.getPrototypeOf(proto), Iterator.prototype);
michael@0: proto = Object.getPrototypeOf([].entries());
michael@0: assertEq(Object.getPrototypeOf(proto), Iterator.prototype);
michael@0: 
michael@0: function check(it) {
michael@0:     assertEq(typeof it, 'object');
michael@0:     assertEq(Object.getPrototypeOf(it), proto);
michael@0:     assertEq(Object.getOwnPropertyNames(it).length, 0);
michael@0:     assertEq(it[std_iterator](), it);
michael@0: 
michael@0:     // for-in enumerates the iterator's properties.
michael@0:     it.x = 0;
michael@0:     var s = '';
michael@0:     for (var p in it)
michael@0:         s += p + '.';
michael@0:     assertEq(s, 'x.');
michael@0: }
michael@0: 
michael@0: check([][std_iterator]());
michael@0: check(Array.prototype[std_iterator].call({}));
michael@0: check([].keys());
michael@0: check(Array.prototype.keys.call({}));
michael@0: check([].entries());
michael@0: check(Array.prototype.entries.call({}));