js/src/jit-test/tests/collections/Map-iterator-pairs-3.js

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1 // Modifying an array returned by mapiter.next() does not modify the Map.
2
3 load(libdir + "iteration.js");
4
5 var map = Map([['a', 1]]);
6 var res = map[std_iterator]().next();
7 assertIteratorResult(res, ['a', 1], false);
8 res.value[0] = 'b';
9 res.value[1] = 2;
10 assertIteratorResult(res, ['b', 2], false);
11 assertEq(map.get('a'), 1);
12 assertEq(map.has('b'), false);
13 assertEq(map.size, 1);

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