blob: 45e0f91559de341b4b662acbf4cda90ae4d9aa44 (
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
|
// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
//
//
/*---
esid: pending
description: %AsyncIterator.prototype%.drop returns if the iterator is done.
info: >
Iterator Helpers proposal 2.1.6.5
1. Repeat, while remaining > 0,
...
b. Let next be ? Await(? IteratorStep(iterated)).
c. If ? IteratorComplete(next) is true, return undefined.
features: [iterator-helpers]
---*/
class TestIterator extends AsyncIterator {
counter = 0;
async next() {
return {done: ++this.counter >= 2, value: undefined};
}
}
(async () => {
let iter = [1, 2].values().drop(3);
let result = await iter.next();
assertEq(result.value, undefined);
assertEq(result.done, true);
iter = new TestIterator();
let dropped = iter.drop(10);
result = await dropped.next();
assertEq(result.value, undefined);
assertEq(result.done, true);
assertEq(iter.counter, 2);
})();
if (typeof reportCompare == 'function')
reportCompare(0, 0);
|
