mirror of https://github.com/tc39/test262.git
52 lines
1.2 KiB
JavaScript
52 lines
1.2 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
esid: sec-asynciteratorclose
|
|
description: >
|
|
If iterator's "return" method is `null`,
|
|
received non-throw completion is forwarded to the runtime.
|
|
info: |
|
|
AsyncIteratorClose ( iteratorRecord, completion )
|
|
|
|
[...]
|
|
4. Let innerResult be GetMethod(iterator, "return").
|
|
5. If innerResult.[[Type]] is normal,
|
|
a. Let return be innerResult.[[Value]].
|
|
b. If return is undefined, return Completion(completion).
|
|
|
|
GetMethod ( V, P )
|
|
|
|
[...]
|
|
2. Let func be ? GetV(V, P).
|
|
3. If func is either undefined or null, return undefined.
|
|
features: [Symbol.asyncIterator, async-iteration]
|
|
flags: [async]
|
|
includes: [asyncHelpers.js]
|
|
---*/
|
|
|
|
var iterationCount = 0;
|
|
var returnGets = 0;
|
|
|
|
var iterable = {};
|
|
iterable[Symbol.asyncIterator] = function() {
|
|
return {
|
|
next: function() {
|
|
return {value: 1, done: false};
|
|
},
|
|
get return() {
|
|
returnGets += 1;
|
|
return null;
|
|
},
|
|
};
|
|
};
|
|
|
|
asyncTest(async function() {
|
|
for await (var _ of iterable) {
|
|
iterationCount += 1;
|
|
break;
|
|
}
|
|
|
|
assert.sameValue(iterationCount, 1);
|
|
assert.sameValue(returnGets, 1);
|
|
});
|