michael@0: // set.keys() and set.values() return iterators over the elements
michael@0: // and set.entries() returns an iterator that yields pairs [e, e].
michael@0: 
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: var data = [1, 2, 3, 4];
michael@0: var s = Set(data);
michael@0: 
michael@0: var ki = s.keys();
michael@0: assertIteratorNext(ki, 1);
michael@0: assertIteratorNext(ki, 2);
michael@0: assertIteratorNext(ki, 3);
michael@0: assertIteratorNext(ki, 4);
michael@0: assertIteratorDone(ki, undefined);
michael@0: 
michael@0: assertEq([...s.keys()].toSource(), data.toSource());
michael@0: assertEq([...s.values()].toSource(), data.toSource());
michael@0: assertEq([...s.entries()].toSource(), [[1, 1], [2, 2], [3, 3], [4, 4]].toSource());