1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/reduce/left-associative.js b/js/src/tests/non262/AsyncIterator/prototype/reduce/left-associative.js
new file mode 100644
index 0000000000..91147a1fba
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/reduce/left-associative.js
@@ -0,0 +1,15 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator')) 
+
+async function* gen() {
+  yield 1;
+  yield 2;
+  yield 3;
+}
+
+gen().reduce((x, y) => `(${x}+${y})`, 0)
+  .then(result => assertEq(result, '(((0+1)+2)+3)'));
+gen().reduce((x, y) => `(${x}+${y})`)
+  .then(result => assertEq(result, '((1+2)+3)'));
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);