diff options
Diffstat (limited to 'js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterator-instance.js')
-rw-r--r-- | js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterator-instance.js | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterator-instance.js b/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterator-instance.js new file mode 100644 index 0000000000..4045801277 --- /dev/null +++ b/js/src/tests/non262/Iterator/from/return-wrapper-if-not-iterator-instance.js @@ -0,0 +1,24 @@ +// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally +/*--- + Iterator.from returns an iterator wrapper if O is not an instance of Iterator. +---*/ + +class TestIterator { + [Symbol.iterator]() { + return this; + } + + next() { + return { done: false, value: 0 }; + } +} + +const iter = new TestIterator(); +assertEq(iter instanceof Iterator, false); + +const wrapper = Iterator.from(iter); +assertEq(iter !== wrapper, true); +assertEq(wrapper instanceof Iterator, true); + +if (typeof reportCompare === 'function') + reportCompare(0, 0); |