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// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) -- FinalizationRegistry 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 is not an Object
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: [FinalizationRegistry]
---*/
assert.sameValue(typeof FinalizationRegistry.prototype.unregister, 'function');
var unregister = FinalizationRegistry.prototype.unregister;
assert.throws(TypeError, function() {
unregister.call(undefined, {});
}, 'undefined');
assert.throws(TypeError, function() {
unregister.call(null, {});
}, 'null');
assert.throws(TypeError, function() {
unregister.call(true, {});
}, 'true');
assert.throws(TypeError, function() {
unregister.call(false, {});
}, 'false');
assert.throws(TypeError, function() {
unregister.call(1, {});
}, 'number');
assert.throws(TypeError, function() {
unregister.call('object', {});
}, 'string');
var s = Symbol();
assert.throws(TypeError, function() {
unregister.call(s, {});
}, 'symbol');
reportCompare(0, 0);
|
