1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/set/trap-is-undefined.js b/js/src/tests/test262/built-ins/Proxy/set/trap-is-undefined.js
new file mode 100644
index 0000000000..3bc6d09e01
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/set/trap-is-undefined.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-set-p-v-receiver
+description: >
+    [[Set]] ( P, V, Receiver)
+
+    7. If trap is undefined, then
+      a. Return ? target.[[Set]](P, V, Receiver)
+
+features: [Proxy]
+---*/
+
+var target = {
+  attr: 1
+};
+var p = new Proxy(target, {
+  set: undefined
+});
+
+p.attr = 2;
+
+assert.sameValue(target.attr, 2);
+
+reportCompare(0, 0);