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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-eagerly-on-non-iterator.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-eagerly-on-non-iterator.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-eagerly-on-non-iterator.js new file mode 100644 index 0000000000..1a61f5001a --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-eagerly-on-non-iterator.js @@ -0,0 +1,31 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods throw eagerly when called on non-iterators. +info: > + AsyncIterator Helpers proposal 1.1.1 +features: [iterator-helpers] +---*/ + +async function* gen(x) { yield x; } + +const methods = [ + iter => AsyncIterator.prototype.map.bind(iter, x => x), + iter => AsyncIterator.prototype.filter.bind(iter, x => x), + iter => AsyncIterator.prototype.take.bind(iter, 1), + iter => AsyncIterator.prototype.drop.bind(iter, 0), + iter => AsyncIterator.prototype.asIndexedPairs.bind(iter), + iter => AsyncIterator.prototype.flatMap.bind(iter, gen), +]; + +for (const method of methods) { + for (const value of [undefined, null, 0, false, '', Symbol(''), {}, []]) { + assertThrowsInstanceOf(method(value), TypeError); + } +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |