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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-handle-empty-iterators.js | 42 |
1 files changed, 42 insertions, 0 deletions
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); |