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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-done-throws.js | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-done-throws.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-done-throws.js new file mode 100644 index 0000000000..276e59fc86 --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-done-throws.js @@ -0,0 +1,53 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods throw if `next.done` throws. +info: > + AsyncIterator Helpers proposal 2.1.6 +features: [iterator-helpers] +---*/ + +class TestError extends Error {} +class TestAsyncIterator extends AsyncIterator { + async next() { + return { + get done() { + throw new TestError(); + } + }; + } + + closed = false; + async return() { + this.closed = true; + return {done: true}; + } +} + +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 TestAsyncIterator(); + assertEq(iterator.closed, false); + method(iterator).next().then( + _ => assertEq(true, false, 'Expected reject'), + err => { + assertEq(err instanceof TestError, true); + assertEq(iterator.closed, false); + }, + ); +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |