Map-iterator-remove-3.js

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// A map iterator can cope with removing the next entry, then the current entry.

load(libdir + "asserts.js");

load(libdir + "iteration.js");

var map = new Map([['a', 0], ['b', 1], ['c', 2], ['d', 3]]);

var iter = map[Symbol.iterator]();

assertIteratorNext(iter, ['a', 0]);

assertIteratorNext(iter, ['b', 1]);

map.delete('c');

map.delete('b');

assertIteratorNext(iter, ['d', 3]);

assertIteratorDone(iter, undefined);