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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Flags: --allow-natives-syntax
const actual = [];
function createIterator() {
return {
[Symbol.iterator]() { return this; },
return() {
return { value: Promise.resolve(1), done: true};
}
};
}
actual.push("start");
iter = %CreateAsyncFromSyncIterator(createIterator());
Promise.resolve(0)
.then(() => actual.push("tick 1"))
.then(() => actual.push("tick 2"))
.then(() => actual.push("tick 3"))
.then(() => actual.push("tick 4"))
.then(() => actual.push("tick 5"));
let p = iter.return();
p.then(_ => { actual.push("done"); } );
%PerformMicrotaskCheckpoint();
assertSame("start,tick 1,tick 2,done,tick 3,tick 4,tick 5", actual.join(","))
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