Map-iterator-pairs-3.js

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// Modifying an array returned by mapiter.next() does not modify the Map.

load(libdir + "iteration.js");

var map = new Map([['a', 1]]);

var res = map[Symbol.iterator]().next();

assertIteratorResult(res, ['a', 1], false);

res.value[0] = 'b';

res.value[1] = 2;

assertIteratorResult(res, ['b', 2], false);

assertEq(map.get('a'), 1);

assertEq(map.has('b'), false);

assertEq(map.size, 1);