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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/lazy-methods-interleaved.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/lazy-methods-interleaved.js | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/lazy-methods-interleaved.js b/js/src/tests/non262/Iterator/prototype/lazy-methods-interleaved.js new file mode 100644 index 0000000000..0edc3cd467 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/lazy-methods-interleaved.js @@ -0,0 +1,62 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +// +// +/*--- +esid: pending +description: Lazy %Iterator.prototype% method calls can be interleaved. +info: > + Iterator Helpers proposal 2.1.5 +features: [iterator-helpers] +---*/ + +class TestIterator extends Iterator { + value = 0; + next() { + return {done: false, value: this.value++}; + } +} + +function unwrapResult(result) { + // Unwrap the asIndexedPair return values. + while (Array.isArray(result.value)) { + result.value = result.value[1]; + } + return result; +} + +const methods = [ + iter => iter.map(x => x), + iter => iter.filter(x => true), + iter => iter.take(2), + iter => iter.drop(0), + iter => iter.asIndexedPairs(), + iter => iter.flatMap(x => [x]), +]; + +for (const firstMethod of methods) { + for (const secondMethod of methods) { + const iterator = new TestIterator(); + const firstHelper = firstMethod(iterator); + const secondHelper = secondMethod(iterator); + + let firstResult = unwrapResult(firstHelper.next()); + assertEq(firstResult.done, false); + assertEq(firstResult.value, 0); + + let secondResult = unwrapResult(secondHelper.next()); + assertEq(secondResult.done, false); + assertEq(secondResult.value, 1); + + firstResult = unwrapResult(firstHelper.next()); + assertEq(firstResult.done, false); + assertEq(firstResult.value, 2); + + secondResult = unwrapResult(secondHelper.next()); + assertEq(secondResult.done, false); + assertEq(secondResult.value, 3); + } +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |