1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/top-level-await/await-void-expr.js b/js/src/tests/test262/language/module-code/top-level-await/await-void-expr.js
new file mode 100644
index 0000000000..f9dda1888a
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/top-level-await/await-void-expr.js
@@ -0,0 +1,29 @@
+// |reftest| module async
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+  AwaitExpression void resolves into undefined
+info: |
+  ModuleItem:
+    StatementListItem[~Yield, +Await, ~Return]
+
+  ...
+
+  UnaryExpression[Yield, Await]
+    void UnaryExpression[?Yield, ?Await]
+    [+Await]AwaitExpression[?Yield]
+
+  AwaitExpression[Yield]:
+    await UnaryExpression[?Yield, +Await]
+esid: prod-AwaitExpression
+flags: [module, async]
+features: [top-level-await]
+---*/
+
+var x = await void 1;
+
+assert.sameValue(x, undefined);
+
+$DONE();