blob: 57a0d05d5ead2b30afed6b9122c8dfaa2d3cc818 (
plain)
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
|
// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.3.1.1
esid: sec-weakmap-iterable
description: >
Return IteratorClose(iter, status) if fail on adding value on constructing.
info: |
WeakMap ( [ iterable ] )
...
9. Repeat
k. Let status be Call(adder, map, «k.[[value]], v.[[value]]»).
l. If status is an abrupt completion, return IteratorClose(iter, status).
features: [Symbol.iterator]
---*/
var count = 0;
var iterable = {};
iterable[Symbol.iterator] = function() {
return {
next: function() {
return {
value: [],
done: false
};
},
return: function() {
count += 1;
}
};
};
WeakMap.prototype.set = function() {
throw new Test262Error();
};
assert.throws(Test262Error, function() {
new WeakMap(iterable);
});
assert.sameValue(
count, 1,
'The iterator is closed when `WeakMap.prototype.set` throws an error.'
);
|
