| // A Map iterator does not iterate over new entries added after it throws StopIteration. | |
| load(libdir + "iteration.js"); | |
| var map = new Map(); | |
| var iter0 = map[Symbol.iterator](), iter1 = map[Symbol.iterator](); | |
| assertIteratorDone(iter0, undefined); // closes iter0 | |
| map.set(1, 2); | |
| assertIteratorDone(iter0, undefined); // already closed | |
| assertIteratorNext(iter1, [1, 2]); // was not yet closed |