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// |reftest| shell-option(--enable-symbols-as-weakmap-keys) skip-if(release_or_beta||!xulRuntime.shell) -- symbols-as-weakmap-keys is not released yet, requires shell-options
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-weakset-iterable
description: >
Returns the new WeakSet adding Symbol values from the iterable parameter.
info: |
WeakSet ( [ _iterable_ ] )
8. Repeat,
d. Let _status_ be Completion(Call(_adder_, _set_, « _nextValue_ »)).
WeakSet.prototype.add ( _value_ ):
6. Append _value_ as the last element of _entries_.
features: [Symbol, WeakSet, symbols-as-weakmap-keys]
includes: [compareArray.js]
---*/
var first = Symbol('a description');
var second = Symbol('a description');
var added = [];
var realAdd = WeakSet.prototype.add;
WeakSet.prototype.add = function(value) {
added.push(value);
return realAdd.call(this, value);
};
var s = new WeakSet([first, second, Symbol.hasInstance]);
assert.compareArray(
added,
[first, second, Symbol.hasInstance],
"add() was called 3 times, on the two unregistered and one well-known symbols in order"
);
WeakSet.prototype.add = realAdd;
reportCompare(0, 0);
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