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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/drop/drop-more-than-available.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/drop/drop-more-than-available.js b/js/src/tests/non262/AsyncIterator/prototype/drop/drop-more-than-available.js new file mode 100644 index 0000000000..45e0f91559 --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/drop/drop-more-than-available.js @@ -0,0 +1,39 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: %AsyncIterator.prototype%.drop returns if the iterator is done. +info: > + Iterator Helpers proposal 2.1.6.5 + 1. Repeat, while remaining > 0, + ... + b. Let next be ? Await(? IteratorStep(iterated)). + c. If ? IteratorComplete(next) is true, return undefined. +features: [iterator-helpers] +---*/ + +class TestIterator extends AsyncIterator { + counter = 0; + async next() { + return {done: ++this.counter >= 2, value: undefined}; + } +} + +(async () => { + let iter = [1, 2].values().drop(3); + let result = await iter.next(); + assertEq(result.value, undefined); + assertEq(result.done, true); + + iter = new TestIterator(); + let dropped = iter.drop(10); + result = await dropped.next(); + assertEq(result.value, undefined); + assertEq(result.done, true); + assertEq(iter.counter, 2); +})(); + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |