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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-map.prototype.keys
description: >
Returns an iterator.
info: |
Map.prototype.keys ( )
...
2. Return CreateMapIterator(M, "key").
23.1.5.1 CreateMapIterator Abstract Operation
...
7. Return iterator.
---*/
var obj = {};
var map = new Map();
map.set('foo', 1);
map.set(obj, 2);
map.set(map, 3);
var iterator = map.keys();
var result;
result = iterator.next();
assert.sameValue(result.value, 'foo', 'First result `value` ("key")');
assert.sameValue(result.done, false, 'First result `done` flag');
result = iterator.next();
assert.sameValue(result.value, obj, 'Second result `value` ("key")');
assert.sameValue(result.done, false, 'Second result `done` flag');
result = iterator.next();
assert.sameValue(result.value, map, 'Third result `value` ("key")');
assert.sameValue(result.done, false, 'Third result `done` flag');
result = iterator.next();
assert.sameValue(result.value, undefined, 'Exhausted result `value`');
assert.sameValue(result.done, true, 'Exhausted result `done` flag');
result = iterator.next();
assert.sameValue(
result.value, undefined, 'Exhausted result `value` (repeated request)'
);
assert.sameValue(
result.done, true, 'Exhausted result `done` flag (repeated request)'
);
reportCompare(0, 0);
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