mirror of https://github.com/tc39/test262.git
38 lines
747 B
JavaScript
38 lines
747 B
JavaScript
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// Copyright (C) 2021 Jamie Kyle. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-object.hasown
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description: Object.hasOwn with symbol and valueOf conversion
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info: |
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Object.hasOwn ( _O_, _P_ )
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1. Let _obj_ be ? ToObject(_O_).
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2. Let _key_ be ? ToPropertyKey(_P_).
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...
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author: Jamie Kyle
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features: [Symbol, Object.hasOwn]
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---*/
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var obj = {};
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var sym = Symbol();
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var callCount = 0;
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var wrapper = {
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valueOf: function() {
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callCount += 1;
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return sym;
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},
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toString: null
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};
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obj[sym] = 0;
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assert.sameValue(
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Object.hasOwn(obj, wrapper),
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true,
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"Returns true if symbol own property found"
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);
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assert.sameValue(callCount, 1, "valueOf method called exactly once");
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