// 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);
});