blob: a96b8f3c94e1ea3916c94cbeac95fe80944f4b31 (
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
|
// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 22.1.2.1
description: Error invoking map function (traversed via iterator)
info: >
[...]
6. If usingIterator is not undefined, then
[...]
g. Repeat
[...]
vii. If mapping is true, then
1. Let mappedValue be Call(mapfn, T, «nextValue, k»).
2. If mappedValue is an abrupt completion, return
IteratorClose(iterator, mappedValue).
features: [Symbol.iterator]
---*/
var closeCount = 0;
var mapFn = function() {
throw new Test262Error();
};
var items = {};
items[Symbol.iterator] = function() {
return {
return: function() {
closeCount += 1;
},
next: function() {
return {
done: false
};
}
};
};
assert.throws(Test262Error, function() {
Array.from(items, mapFn);
});
assert.sameValue(closeCount, 1);
|
