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function fn() {
var map = new Map(),
set = new Set();
for (var i = 0; i < 250; i++) {
map.set(i, i);
set.add(i);
}
map.set('foo', 'bar');
set.add('bar');
return map.has('foo') && set.has('bar');
}
assertEqual(fn(), true);
test(fn);