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Diffstat (limited to 'js/src/tests/non262/Iterator/prototype/lazy-methods-throw-next-not-object.js')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/lazy-methods-throw-next-not-object.js | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-next-not-object.js b/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-next-not-object.js new file mode 100644 index 0000000000..1d70ed1d62 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/lazy-methods-throw-next-not-object.js @@ -0,0 +1,44 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +// +// +/*--- +esid: pending +description: Lazy %Iterator.prototype% methods throw if `next` call returns a non-object. +info: > + Iterator Helpers proposal 2.1.5 +features: [iterator-helpers] +---*/ + +class TestIterator extends Iterator { + next(value) { + return value; + } + + closed = false; + return() { + this.closed = true; + return {done: true}; + } +} + +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 => [x]), +]; + +for (const method of methods) { + for (const value of [undefined, null, 0, false, '', Symbol('')]) { + const iterator = new TestIterator(); + assertEq(iterator.closed, false); + assertThrowsInstanceOf(() => method(iterator).next(value), TypeError); + assertEq(iterator.closed, false); + } +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |