// |reftest| async // Copyright (C) 2018 Valerie Young. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-%asyncfromsynciteratorprototype%.return description: return() will return rejected promise if getter of `return` abrupt completes info: | %AsyncFromSyncIteratorPrototype%.return ( value ) ... 2. Let promiseCapability be ! NewPromiseCapability(%Promise%). ... 5. Let return be GetMethod(syncIterator, "return"). 6. IfAbruptRejectPromise(return, promiseCapability). ... 22. Return promiseCapability.[[Promise]]. flags: [async] features: [async-iteration] ---*/ var thrownError = new Error("Catch me."); var obj = { [Symbol.iterator]() { return { next() { return { value: 1, done: false }; }, get return() { throw thrownError; } } } }; async function* asyncg() { yield* obj; } var iter = asyncg(); iter.next().then(function(result) { iter.return().then( function (result) { throw new Test262Error("Promise should be rejected, got: " + result.value); }, function (err) { assert.sameValue(err, thrownError, "Promise should be rejected with thrown error"); iter.next().then(({ done, value }) => { assert.sameValue(done, true, 'the iterator is completed'); assert.sameValue(value, undefined, 'value is undefined'); }).then($DONE, $DONE); } ).catch($DONE); }).catch($DONE);