1 files changed, 66 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js
new file mode 100644
index 0000000000..19d2be92d8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js
@@ -0,0 +1,66 @@
+// |reftest| async
+// Copyright (C) 2018 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-%asyncfromsynciteratorprototype%.return
+description: return() will return rejected promise if getter of `return` abrupt completes
+info: |
+  %AsyncFromSyncIteratorPrototype%.return ( value )
+  ...
+  2. Let promiseCapability be ! NewPromiseCapability(%Promise%).
+  ...
+  5. Let return be GetMethod(syncIterator, "return").
+  6. IfAbruptRejectPromise(return, promiseCapability).
+  ...
+  8. Let returnResult be Call(return, syncIterator, « value »).
+  ...
+  10. If Type(returnResult) is not Object,
+    a. Perform ! Call(promiseCapability.[[Reject]], undefined, « a TypeError exception »).
+    b. Return promiseCapability.[[Promise]].
+  ...
+  22. Return promiseCapability.[[Promise]].
+
+flags: [async]
+features: [async-iteration]
+---*/
+
+var thrownError = new Error("Catch me.");
+
+var obj = {
+  [Symbol.iterator]() {
+    return {
+      next() {
+        return { value: 1, done: false };
+      },
+      return() {
+        throw thrownError;
+      }
+    };
+  }
+};
+
+async function* asyncg() {
+  yield* obj;
+}
+
+var iter = asyncg();
+
+iter.next().then(function(result) {
+
+  iter.return().then(
+    function (result) {
+      throw new Test262Error("Promise should be rejected, got: " + result.value);
+    },
+    function (err) {
+      assert.sameValue(err, thrownError, "Promise should be rejected with thrown error");
+
+      iter.next().then(({ done, value }) => {
+        assert.sameValue(done, true, 'the iterator is completed');
+        assert.sameValue(value, undefined, 'value is undefined');
+      }).then($DONE, $DONE);
+    }
+  ).catch($DONE);
+
+}).catch($DONE);
+