diff options
Diffstat (limited to 'js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterable.js')
-rw-r--r-- | js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterable.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterable.js b/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterable.js new file mode 100644 index 0000000000..09b974f327 --- /dev/null +++ b/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterable.js @@ -0,0 +1,28 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally +/*--- + Iterator.from returns an iterator wrapper if O is not an iterable. +---*/ + +class TestIterator { + next() { + return { done: false, value: 0 }; + } +} + +const iter = new TestIterator(); +assertEq( + Symbol.iterator in iter, + false, + 'iter is not an iterable.' +); + +const wrapper = Iterator.from(iter); +assertEq(iter !== wrapper, true); +assertEq( + Symbol.iterator in wrapper, + true, + 'wrapper is an iterable.' +); + +if (typeof reportCompare === 'function') + reportCompare(0, 0); |