1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/non262/AsyncIterator/prototype/generator-methods-throw-on-iterator-helpers.js b/js/src/tests/non262/AsyncIterator/prototype/generator-methods-throw-on-iterator-helpers.js
new file mode 100644
index 0000000000..0e5b6ac0b5
--- /dev/null
+++ b/js/src/tests/non262/AsyncIterator/prototype/generator-methods-throw-on-iterator-helpers.js
@@ -0,0 +1,35 @@
+// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
+
+const asyncGeneratorProto = Object.getPrototypeOf(
+  Object.getPrototypeOf(
+    (async function *() {})()
+  )
+);
+
+const methods = [
+  iter => iter.map(x => x),
+  iter => iter.filter(x => x),
+  iter => iter.take(1),
+  iter => iter.drop(0),
+  iter => iter.asIndexedPairs(),
+  iter => iter.flatMap(x => (async function*() {})()),
+];
+
+for (const method of methods) {
+  const iteratorHelper = method((async function*() {})());
+  asyncGeneratorProto.next.call(iteratorHelper).then(
+    _ => assertEq(true, false, 'Expected reject'),
+    err => assertEq(err instanceof TypeError, true),
+  );
+  asyncGeneratorProto.return.call(iteratorHelper).then(
+    _ => assertEq(true, false, 'Expected reject'),
+    err => assertEq(err instanceof TypeError, true),
+  );
+  asyncGeneratorProto.throw.call(iteratorHelper).then(
+    _ => assertEq(true, false, 'Expected reject'),
+    err => assertEq(err instanceof TypeError, true),
+  );
+}
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);