// |reftest| async // 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); });