From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../lazy-methods-handle-empty-iterators.js | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js (limited to 'js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js') diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js new file mode 100644 index 0000000000..b1bd426dd8 --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js @@ -0,0 +1,42 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods handle empty iterators. +info: > + Iterator Helpers proposal 2.1.6 +features: [iterator-helpers] +---*/ + +class EmptyIterator extends AsyncIterator { + async next() { + return {done: true}; + } +} + +async function* gen() {} + +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(x => gen()), +]; + +for (const method of methods) { + for (const iterator of [new EmptyIterator(), gen()]) { + method(iterator).next().then( + ({done, value}) => { + assertEq(done, true); + assertEq(value, undefined); + } + ); + } +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); -- cgit v1.2.3