michael@0: // Set iterators produces entries in the order they were inserted.
michael@0: 
michael@0: var set = Set();
michael@0: var i;
michael@0: for (i = 7; i !== 1; i = i * 7 % 1117)
michael@0:     set.add(i);
michael@0: assertEq(set.size, 557);
michael@0: 
michael@0: i = 7;
michael@0: for (var v of set) {
michael@0:     assertEq(v, i);
michael@0:     i = i * 7 % 1117;
michael@0: }
michael@0: assertEq(i, 1);