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-rw-r--r--js/src/tests/test262/built-ins/Object/getOwnPropertyNames/order-after-define-property.js50
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diff --git a/js/src/tests/test262/built-ins/Object/getOwnPropertyNames/order-after-define-property.js b/js/src/tests/test262/built-ins/Object/getOwnPropertyNames/order-after-define-property.js
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+++ b/js/src/tests/test262/built-ins/Object/getOwnPropertyNames/order-after-define-property.js
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+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.getownpropertynames
+description: >
+ Property names are returned in ascending chronological order of creation
+ that is unaffected by [[DefineOwnProperty]].
+info: |
+ Object.getOwnPropertyNames ( O )
+
+ 1. Return ? GetOwnPropertyKeys(O, String).
+
+ GetOwnPropertyKeys ( O, type )
+
+ 1. Let obj be ? ToObject(O).
+ 2. Let keys be ? obj.[[OwnPropertyKeys]]().
+ [...]
+
+ 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.
+ [...]
+ 5. Return keys.
+features: [arrow-function]
+includes: [compareArray.js]
+---*/
+
+var obj = {};
+Object.defineProperty(obj, "a", {
+ get: function() {},
+ set: function(_value) {},
+ enumerable: true,
+ configurable: true,
+})
+obj.b = 2;
+Object.defineProperty(obj, "a", {
+ set: function(_value) {},
+});
+assert.compareArray(Object.getOwnPropertyNames(obj), ["a", "b"]);
+
+var arr = [];
+arr.a = 1;
+Object.defineProperty(arr, "length", {value: 2});
+assert.compareArray(Object.getOwnPropertyNames(arr), ["length", "a"]);
+
+reportCompare(0, 0);