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// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')||!this.hasOwnProperty('WeakRef')) -- FinalizationRegistry,WeakRef is not enabled unconditionally
// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-finalization-registry.prototype.unregister
description: Throws a TypeError if this does not have a [[Cells]] internal slot
info: |
FinalizationRegistry.prototype.unregister ( unregisterToken )
1. Let finalizationRegistry be the this value.
2. If Type(finalizationRegistry) is not Object, throw a TypeError exception.
3. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception.
4. If Type(unregisterToken) is not Object, throw a TypeError exception.
...
features: [WeakSet, WeakMap, FinalizationRegistry, WeakRef]
---*/
assert.sameValue(typeof FinalizationRegistry.prototype.unregister, 'function');
var unregister = FinalizationRegistry.prototype.unregister;
var token = {};
assert.throws(TypeError, function() {
unregister.call({ ['[[Cells]]']: {} }, token);
}, 'Ordinary object without [[Cells]]');
assert.throws(TypeError, function() {
unregister.call(WeakRef.prototype, token);
}, 'WeakRef.prototype does not have a [[Cells]] internal slot');
assert.throws(TypeError, function() {
unregister.call(WeakRef, token);
}, 'WeakRef does not have a [[Cells]] internal slot');
var wr = new WeakRef({});
assert.throws(TypeError, function() {
unregister.call(wr, token);
}, 'WeakRef instance');
var wm = new WeakMap();
assert.throws(TypeError, function() {
unregister.call(wm, token);
}, 'WeakMap instance');
var ws = new WeakSet();
assert.throws(TypeError, function() {
unregister.call(ws, token);
}, 'WeakSet instance');
reportCompare(0, 0);
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