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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-iterator-closed-on-call-throws.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-iterator-closed-on-call-throws.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-iterator-closed-on-call-throws.js new file mode 100644 index 0000000000..1a52d113f9 --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-iterator-closed-on-call-throws.js @@ -0,0 +1,49 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods close the iterator if callback throws. +info: > + AsyncIterator Helpers proposal 2.1.6 +features: [iterator-helpers] +---*/ + +class TestError extends Error {} +class TestAsyncIterator extends AsyncIterator { + async next() { + return {done: false, value: 1}; + } + + closed = false; + async return() { + this.closed = true; + return {done: true}; + } +} + +function fn() { + throw new TestError(); +} +const methods = [ + iter => iter.map(fn), + iter => iter.filter(fn), + iter => iter.flatMap(fn), +]; + +for (const method of methods) { + const iter = new TestAsyncIterator(); + assertEq(iter.closed, false); + method(iter).next().then( + _ => assertEq(true, false, 'Expected reject'), + err => { + assertEq(err instanceof TestError, true); + assertEq(iter.closed, true); + }, + ); +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); + |