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Diffstat (limited to 'js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-not-object.js')
-rw-r--r-- | js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-not-object.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-not-object.js b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-not-object.js new file mode 100644 index 0000000000..bb38a67000 --- /dev/null +++ b/js/src/tests/non262/AsyncIterator/prototype/lazy-methods-throw-next-not-object.js @@ -0,0 +1,50 @@ +// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) + +// +// +/*--- +esid: pending +description: Lazy %AsyncIterator.prototype% methods throw if `next` call returns a non-object. +info: > + Iterator Helpers proposal 2.1.6 +features: [iterator-helpers] +---*/ + +class TestAsyncIterator extends AsyncIterator { + async next(value) { + return value; + } + + closed = false; + async return() { + this.closed = true; + return {done: true}; + } +} + +async function* gen(x) { yield x; } +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(gen), +]; + +for (const method of methods) { + for (const value of [undefined, null, 0, false, '', Symbol('')]) { + const iterator = new TestAsyncIterator(); + assertEq(iterator.closed, false); + method(iterator).next(value).then( + _ => assertEq(true, false, 'Expected reject'), + err => { + assertEq(err instanceof TypeError, true); + assertEq(iterator.closed, false); + }, + ); + } +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |