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// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
//
//
/*---
esid: pending
description: %AsyncIterator.prototype%.flatMap closes the iterator when innerValue throws.
info: >
Iterator Helpers proposal 2.1.6.7
1. Repeat,
...
k. Repeat, while innerAlive is true,
...
viii. Else,
1. Let innerValue be IteratorValue(innerNext).
2. IfAbruptCloseAsyncIterator(innerValue, iterated).
features: [iterator-helpers]
---*/
class TestIterator extends AsyncIterator {
async next() {
return {done: false, value: 0};
}
closed = false;
async return() {
this.closed = true;
return {done: true};
}
}
class TestError extends Error {}
class InnerIterator extends AsyncIterator {
async next() {
return {
done: false,
get value() {
throw new TestError();
},
};
}
}
const iter = new TestIterator();
const mapped = iter.flatMap(x => new InnerIterator());
assertEq(iter.closed, false);
mapped.next().then(
_ => assertEq(true, false, 'Expected reject.'),
err => {
assertEq(err instanceof TestError, true);
assertEq(iter.closed, true);
}
);
if (typeof reportCompare == 'function')
reportCompare(0, 0);
|
