1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/toArray/async-writes.js b/js/src/tests/non262/AsyncIterator/prototype/toArray/async-writes.js
new file mode 100644
index 0000000000..8246d8d4ed
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/toArray/async-writes.js
@@ -0,0 +1,20 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+let x = {a: () => true};
+
+async function* gen() {
+  yield x.a();
+  yield x.a();
+}
+
+gen().toArray().then(
+  () => assertEq(true, false, 'expected error'),
+  err => assertEq(err instanceof Error, true),
+);
+
+x.a = () => {
+  throw Error();
+};
+
+if (typeof reportCompare === 'function')
+  reportCompare(0, 0);