blob: 8b5506ee9768e2cb13604ef21cc152c572efb636 (
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// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
class TestAsyncIterator extends AsyncIterator {
async next(value) {
return {done: false, value};
}
}
const methods = [
iter => iter.map(x => x),
iter => iter.filter(x => true),
iter => iter.take(2),
iter => iter.drop(0),
iter => iter.asIndexedPairs(),
];
for (const outerMethod of methods) {
for (const innerMethod of methods) {
const iterator = new TestAsyncIterator();
const iteratorChain = outerMethod(innerMethod(iterator));
iteratorChain.next().then(
_ => iteratorChain.next('last value').then(
({done, value}) => {
assertEq(done, false);
// Unwrap the asIndexedPair return values.
while (Array.isArray(value)) {
value = value[1];
}
assertEq(value, 'last value');
}
),
);
}
}
if (typeof reportCompare == 'function')
reportCompare(0, 0);
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