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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/getOwnPropertySymbols/order-after-define-property.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/getOwnPropertySymbols/order-after-define-property.js b/js/src/tests/test262/built-ins/Object/getOwnPropertySymbols/order-after-define-property.js new file mode 100644 index 0000000000..737ec77cdb --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/getOwnPropertySymbols/order-after-define-property.js @@ -0,0 +1,48 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-object.getownpropertysymbols +description: > + Property names are returned in ascending chronological order of creation + that is unaffected by [[DefineOwnProperty]]. +info: | + Object.getOwnPropertySymbols ( O ) + + 1. Return ? GetOwnPropertyKeys(O, Symbol). + + GetOwnPropertyKeys ( O, type ) + + 1. Let obj be ? ToObject(O). + 2. Let keys be ? obj.[[OwnPropertyKeys]](). + [...] + + OrdinaryOwnPropertyKeys ( O ) + + [...] + 4. For each own property key P of O that is a Symbol, in ascending + chronological order of property creation, do + a. Add P as the last element of keys. + 5. Return keys. +features: [Symbol] +includes: [compareArray.js] +---*/ + +var symA = Symbol("a"); +var symB = Symbol("b"); + +var obj = {}; +obj[symA] = 1; +obj[symB] = 2; +Object.defineProperty(obj, symA, { + get: function() {}, +}); +assert.compareArray(Object.getOwnPropertySymbols(obj), [symA, symB]); + +var arr = []; +arr[symA] = 1; +arr[symB] = 2; +Object.defineProperty(arr, symA, {writable: false}); +assert.compareArray(Object.getOwnPropertySymbols(arr), [symA, symB]); + +reportCompare(0, 0); |