blob: a8f70497f7b2aaa68e442a7fe2891e707dfcf0fe (
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
45
|
// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
//
//
/*---
esid: pending
description: %Iterator.prototype%.flatMap closes the iterator when innerNext throws.
info: >
Iterator Helpers proposal 2.1.5.7
1. Repeat,
...
i. Repeat, while innerAlive is true,
i. Let innerNext be IteratorNext(innerIterator).
ii. IfAbruptCloseIterator(innerNext, iterated).
features: [iterator-helpers]
---*/
class TestIterator extends Iterator {
next() {
return {done: false, value: 0};
}
closed = false;
return() {
this.closed = true;
return {done: true};
}
}
class TestError extends Error {}
class InnerIterator extends Iterator {
next() {
throw new TestError();
}
}
const iter = new TestIterator();
const mapped = iter.flatMap(x => new InnerIterator());
assertEq(iter.closed, false);
assertThrowsInstanceOf(() => mapped.next(), TestError);
assertEq(iter.closed, true);
if (typeof reportCompare == 'function')
reportCompare(0, 0);
|