diff options
Diffstat (limited to 'js/src/tests/non262/Iterator/prototype/flatMap/inner-empty-iterable.js')
-rw-r--r-- | js/src/tests/non262/Iterator/prototype/flatMap/inner-empty-iterable.js | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/flatMap/inner-empty-iterable.js b/js/src/tests/non262/Iterator/prototype/flatMap/inner-empty-iterable.js new file mode 100644 index 0000000000..24fcc85c2c --- /dev/null +++ b/js/src/tests/non262/Iterator/prototype/flatMap/inner-empty-iterable.js @@ -0,0 +1,38 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) + +// +// +/*--- +esid: pending +description: %Iterator.prototype%.flatMap skips empty inner iterables. +info: > + Iterator Helpers proposal 2.1.5.7 + 1. Repeat, + ... + i. Repeat, while innerAlive is true, + ... + iii. Let innerComplete be IteratorComplete(innerNext). + ... + v. If innerComplete is true, set innerAlive to false. +features: [iterator-helpers] +---*/ + +let iter = [0, 1, 2, 3].values().flatMap(x => x % 2 ? [] : [x]); + +for (const expected of [0, 2]) { + const result = iter.next(); + assertEq(result.value, expected); + assertEq(result.done, false); +} + +let result = iter.next(); +assertEq(result.value, undefined); +assertEq(result.done, true); + +iter = [0, 1, 2, 3].values().flatMap(x => []); +result = iter.next(); +assertEq(result.value, undefined); +assertEq(result.done, true); + +if (typeof reportCompare == 'function') + reportCompare(0, 0); |