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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-symbol-as-weakmap-key
(function TestRegisterWithSymbolTarget() {
const fg = new FinalizationRegistry(() => { });
fg.register(Symbol('123'), 'holdings');
// Registered symbols cannot be the target.
assertThrows(() => fg.register(Symbol.for('123'), 'holdings'), TypeError);
})();
(function TestRegisterWithSymbolUnregisterToken() {
const fg = new FinalizationRegistry(() => { });
fg.register({}, 'holdings', Symbol('123'));
// Registered symbols cannot be the unregister token.
assertThrows(() => fg.register({}, 'holdings', Symbol.for('123')), TypeError);
})();
(function TestRegisterSymbolAndHoldingsSameValue() {
const fg = new FinalizationRegistry(() => {});
const obj = Symbol('123');
// SameValue(target, holdings) not ok.
assertThrows(() => fg.register(obj, obj), TypeError);
const holdings = {a: 1};
fg.register(obj, holdings);
})();
(function TestUnregisterWithSymbolUnregisterToken() {
const fg = new FinalizationRegistry(() => {});
fg.unregister(Symbol('123'));
// Registered symbols cannot be the unregister token.
assertThrows(() => fg.unregister(Symbol.for('123')), TypeError);
})();
(function TestWeakRefConstructorWithSymbol() {
new WeakRef(Symbol('123'));
// Registered symbols cannot be the WeakRef target.
assertThrows(() => new WeakRef(Symbol.for('123')), TypeError);
})();
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