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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.assign
description: >
Proxy keys are iterated in order they were provided by "ownKeys" trap.
info: |
Object.assign ( target, ...sources )
[...]
4. For each element nextSource of sources, in ascending index order, do
a. If nextSource is neither undefined nor null, then
[...]
ii. Let keys be ? from.[[OwnPropertyKeys]]().
iii. For each element nextKey of keys in List order, do
1. Let desc be ? from.[[GetOwnProperty]](nextKey).
[[OwnPropertyKeys]] ( )
[...]
7. Let trapResultArray be ? Call(trap, handler, « target »).
8. Let trapResult be ? CreateListFromArrayLike(trapResultArray, « String, Symbol »).
[...]
23. Return trapResult.
features: [Proxy, Symbol]
includes: [compareArray.js]
---*/
var getOwnKeys = [];
var ownKeysResult = [Symbol(), "foo", "0"];
var proxy = new Proxy({}, {
getOwnPropertyDescriptor: function(_target, key) {
getOwnKeys.push(key);
},
ownKeys: function() {
return ownKeysResult;
},
});
Object.assign({}, proxy);
assert.compareArray(getOwnKeys, ownKeysResult);
reportCompare(0, 0);