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21 lines
744 B
JavaScript
21 lines
744 B
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --no-stress-opt
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var map = new Map([[1,2], [2,3], [3,4]]);
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assertTrue(%MapIteratorProtector());
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assertTrue(%SetIteratorProtector());
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// This changes %MapPrototype%. No more tests should be run after this in the
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// same instance.
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map.__proto__[Symbol.iterator] = () => ({next: () => ({done: true})});
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assertTrue(%MapIteratorProtector());
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assertTrue(%SetIteratorProtector());
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assertEquals([], [...map]);
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assertEquals([[1,2], [2,3], [3,4]], [...map.entries()]);
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assertEquals([1,2,3], [...map.keys()]);
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assertEquals([2,3,4], [...map.values()]);
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