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Diffstat (limited to 'js/src/tests/non262/Iterator/prototype/flatMap/throw-when-inner-not-iterable.js')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/flatMap/throw-when-inner-not-iterable.js | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/flatMap/throw-when-inner-not-iterable.js b/js/src/tests/non262/Iterator/prototype/flatMap/throw-when-inner-not-iterable.js new file mode 100644 index 0000000000..eb581936e1 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/flatMap/throw-when-inner-not-iterable.js @@ -0,0 +1,64 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +// +// +/*--- +esid: pending +description: %Iterator.prototype%.flatMap closes the iterator and throws when mapped isn't iterable. +info: > + Iterator Helpers proposal 2.1.5.7 + 1. Repeat, + ... + f. Let innerIterator be GetIterator(mapped, sync). + g. IfAbruptCloseIterator(innerIterator, iterated). +features: [iterator-helpers] +---*/ + +class NotIterable { + next() { + return {done: true}; + } +} + +class InvalidIterable { + [Symbol.iterator]() { + return {}; + } +} + +class TestIterator extends Iterator { + next() { + return {done: false, value: 0}; + } + + closed = false; + return() { + this.closed = true; + return {done: true}; + } +} + +const nonIterables = [ + new NotIterable(), + new InvalidIterable(), + undefined, + null, + 0, + false, + Symbol(''), + 0n, + {}, +]; + +for (const value of nonIterables) { + const iter = new TestIterator(); + const mapped = iter.flatMap(x => value); + + assertEq(iter.closed, false); + assertThrowsInstanceOf(() => mapped.next(), TypeError); + assertEq(iter.closed, true); +} + +if (typeof reportCompare == 'function') + reportCompare(0, 0); + |