diff options
Diffstat (limited to 'js/src/tests/non262/AsyncIterator/prototype/flatMap/close-iterator-when-inner-value-throws.js')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/flatMap/close-iterator-when-inner-value-throws.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/flatMap/close-iterator-when-inner-value-throws.js b/js/src/tests/non262/AsyncIterator/prototype/flatMap/close-iterator-when-inner-value-throws.js new file mode 100644 index 0000000000..97a82ec0bb --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/flatMap/close-iterator-when-inner-value-throws.js @@ -0,0 +1,57 @@ +// |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); |