1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// |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.register
description: >
Throws a TypeError if unregisterToken is not undefined and cannot be held
weakly
info: |
FinalizationRegistry.prototype.register ( _target_ , _heldValue_ [, _unregisterToken_ ] )
5. If CanBeHeldWeakly(_unregisterToken_) is *false*, then
a. If _unregisterToken_ is not *undefined*, throw a *TypeError* exception.
features: [FinalizationRegistry]
---*/
assert.sameValue(typeof FinalizationRegistry.prototype.register, 'function');
var finalizationRegistry = new FinalizationRegistry(function() {});
var target = {};
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, null);
}, 'null');
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, true);
}, 'true');
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, false);
}, 'false');
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, 1);
}, 'number');
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, 'object');
}, 'string');
var s = Symbol.for('registered symbol');
assert.throws(TypeError, function() {
finalizationRegistry.register(target, undefined, s);
}, 'registered symbol');
reportCompare(0, 0);
|
