Add Object.getOwnPropertySymbols test

test/built-ins/Object/getOwnPropertySymbols/order-after-define-property.js

@@ -0,0 +1,46 @@
+// 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]);