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47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. 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.getownpropertysymbols
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description: >
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Property names are returned in ascending chronological order of creation
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that is unaffected by [[DefineOwnProperty]].
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info: |
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Object.getOwnPropertySymbols ( O )
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1. Return ? GetOwnPropertyKeys(O, Symbol).
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GetOwnPropertyKeys ( O, type )
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1. Let obj be ? ToObject(O).
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2. Let keys be ? obj.[[OwnPropertyKeys]]().
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[...]
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OrdinaryOwnPropertyKeys ( O )
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[...]
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4. For each own property key P of O that is a Symbol, in ascending
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chronological order of property creation, do
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a. Add P as the last element of keys.
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5. Return keys.
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features: [Symbol]
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includes: [compareArray.js]
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---*/
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var symA = Symbol("a");
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var symB = Symbol("b");
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var obj = {};
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obj[symA] = 1;
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obj[symB] = 2;
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Object.defineProperty(obj, symA, {
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get: function() {},
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});
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assert.compareArray(Object.getOwnPropertySymbols(obj), [symA, symB]);
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var arr = [];
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arr[symA] = 1;
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arr[symB] = 2;
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Object.defineProperty(arr, symA, {writable: false});
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assert.compareArray(Object.getOwnPropertySymbols(arr), [symA, symB]);
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