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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/flatMap/close-iterator-when-inner-complete-throws.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/flatMap/close-iterator-when-inner-complete-throws.js b/js/src/tests/non262/Iterator/prototype/flatMap/close-iterator-when-inner-complete-throws.js new file mode 100644 index 0000000000..3a0bfcf167 --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/flatMap/close-iterator-when-inner-complete-throws.js @@ -0,0 +1,49 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +// +// +/*--- +esid: pending +description: %Iterator.prototype%.flatMap closes the iterator when innerComplete throws. +info: > + Iterator Helpers proposal 2.1.5.7 + 1. Repeat, + ... + i. Repeat, while innerAlive is true, + iii. Let innerComplete be IteratorComplete(innerNext). + iv. IfAbruptCloseIterator(innerComplete, iterated). +features: [iterator-helpers] +---*/ + +class TestIterator extends Iterator { + next() { + return {done: false, value: 0}; + } + + closed = false; + return() { + this.closed = true; + return {done: true}; + } +} + +class TestError extends Error {} +class InnerIterator extends Iterator { + next() { + return { + get done() { + throw new TestError(); + } + }; + } +} + +const iter = new TestIterator(); +const mapped = iter.flatMap(x => new InnerIterator()); + +assertEq(iter.closed, false); +assertThrowsInstanceOf(() => mapped.next(), TestError); +assertEq(iter.closed, true); + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |