// A Set iterator does not iterate over new entries added after it throws StopIteration. | |
load(libdir + "iteration.js"); | |
var set = new Set(); | |
var iter0 = set[Symbol.iterator](), iter1 = set[Symbol.iterator](); | |
assertIteratorDone(iter0, undefined); // closes iter0 | |
set.add("x"); | |
assertIteratorDone(iter0, undefined); // already closed | |
assertIteratorNext(iter1, "x"); // was not yet closed |