diff options
Diffstat (limited to 'js/src/tests/non262/AsyncIterator/prototype/lazy-methods-not-close-iterator-next-reject.js')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-not-close-iterator-next-reject.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-not-close-iterator-next-reject.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-not-close-iterator-next-reject.js new file mode 100644 index 0000000000..43d84ae17d --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-not-close-iterator-next-reject.js @@ -0,0 +1,48 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods don't close the iterator if `next` returns rejected promise. +info: > + AsyncIterator Helpers proposal 2.1.6 +features: [iterator-helpers] +---*/ + +class TestIterator extends AsyncIterator { + next() { + return Promise.reject('rejection'); + } + + closed = false; + async return(value) { + this.closed = true; + return {done: true, value}; + } +} + +async function* gen(x) { yield x; } +const methods = [ + iter => iter.map(x => x), + iter => iter.filter(x => x), + iter => iter.take(1), + iter => iter.drop(0), + iter => iter.asIndexedPairs(), + iter => iter.flatMap(gen), +]; + +for (const method of methods) { + const iterator = new TestIterator(); + assertEq(iterator.closed, false); + method(iterator).next().then( + _ => assertEq(true, false, 'Expected reject'), + err => { + assertEq(err, 'rejection'); + assertEq(iterator.closed, false); + }, + ); +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |