michael@0: // set.keys(), .values(), and .entries() on an empty set produce empty iterators
michael@0: 
michael@0: var s = Set();
michael@0: var ki = s.keys(), vi = s.values(), ei = s.entries();
michael@0: var p = Object.getPrototypeOf(ki);
michael@0: assertEq(Object.getPrototypeOf(vi), p);
michael@0: assertEq(Object.getPrototypeOf(ei), p);
michael@0: 
michael@0: for (let k of ki)
michael@0: 	throw "FAIL";
michael@0: for (let v of vi)
michael@0: 	throw "FAIL";
michael@0: for (let [k, v] of ei)
michael@0: 	throw "FAIL";