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Diffstat (limited to 'js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/order-after-define-property.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/order-after-define-property.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/order-after-define-property.js b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/order-after-define-property.js new file mode 100644 index 0000000000..336d47a3ca --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/order-after-define-property.js @@ -0,0 +1,50 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-object.getownpropertydescriptors +description: > + Property names are returned in ascending chronological order of creation + that is unaffected by [[DefineOwnProperty]]. +info: | + Object.getOwnPropertyDescriptors ( O ) + + [...] + 2. Let ownKeys be ? obj.[[OwnPropertyKeys]](). + 3. Let descriptors be ! OrdinaryObjectCreate(%Object.prototype%). + 4. For each element key of ownKeys in List order, do + [...] + c. If descriptor is not undefined, + perform ! CreateDataPropertyOrThrow(descriptors, key, descriptor). + 5. Return descriptors. + + OrdinaryOwnPropertyKeys ( O ) + + [...] + 3. For each own property key P of O that is a String but is not an array index, + in ascending chronological order of property creation, do + a. Add P as the last element of keys. + 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, Reflect] +includes: [compareArray.js] +---*/ + +var obj = {}; +var symA = Symbol("a"); +var symB = Symbol("b"); +obj[symA] = 1; +obj[symB] = 2; +Object.defineProperty(obj, symA, {configurable: false}); +var objDescs = Object.getOwnPropertyDescriptors(obj); +assert.compareArray(Reflect.ownKeys(objDescs), [symA, symB]); + +var re = /(?:)/g; +re.a = 1; +Object.defineProperty(re, "lastIndex", {value: 2}); +var reDescs = Object.getOwnPropertyDescriptors(re); +assert.compareArray(Reflect.ownKeys(reDescs), ["lastIndex", "a"]); + +reportCompare(0, 0); |