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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/Iterator/prototype/map/values-pass-through-chained-maps-to-next.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/Iterator/prototype/map/values-pass-through-chained-maps-to-next.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/map/values-pass-through-chained-maps-to-next.js b/js/src/tests/non262/Iterator/prototype/map/values-pass-through-chained-maps-to-next.js new file mode 100644 index 0000000000..d49daebb87 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/map/values-pass-through-chained-maps-to-next.js @@ -0,0 +1,43 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) +// + +/*--- +esid: pending +description: Multiple chained %Iterator.prototype%.map calls pass `lastValue` to the iterator's `next` call. +info: > + Iterator Helpers Proposal 2.1.5.2 +features: [iterator-helpers] +---*/ + +let nextWasPassed; + +const iteratorWhereNextTakesValue = Object.setPrototypeOf({ + next: function(value) { + nextWasPassed = value; + + if (this.value < 3) + return { done: false, value: this.value++ }; + return { done: true, value: undefined }; + }, + value: 0, +}, Iterator.prototype); + +const mappedIterator = iteratorWhereNextTakesValue.map(x => 2 * x).map(x => 1 + x); + +assertEq(mappedIterator.next(1).value, 1); +assertEq(nextWasPassed, undefined); + +assertEq(mappedIterator.next(2).value, 3); +assertEq(nextWasPassed, 2); + +assertEq(mappedIterator.next(3).value, 5); +assertEq(nextWasPassed, 3); + +assertEq(mappedIterator.next(4).done, true); +assertEq(nextWasPassed, 4); + +assertEq(mappedIterator.next(5).done, true); +assertEq(nextWasPassed, 4); + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |