1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js
new file mode 100644
index 0000000000..0b10a46f15
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 9.5.5
+description: >
+    Throws a TypeError exception if trap result is not configurable but target
+    property descriptor is undefined.
+info: |
+    [[GetOwnProperty]] (P)
+
+    ...
+    2. Let handler be the value of the [[ProxyHandler]] internal slot of O.
+    ...
+    5. Let target be the value of the [[ProxyTarget]] internal slot of O.
+    6. Let trap be GetMethod(handler, "getOwnPropertyDescriptor").
+    ...
+    9. Let trapResultObj be Call(trap, handler, «target, P»).
+    ...
+    12. Let targetDesc be target.[[GetOwnProperty]](P).
+    ...
+    17. Let resultDesc be ToPropertyDescriptor(trapResultObj).
+    ...
+    22. If resultDesc.[[Configurable]] is false, then
+        a. If targetDesc is undefined or targetDesc.[[Configurable]] is true, then
+            i. Throw a TypeError exception.
+
+features: [Proxy]
+---*/
+
+var target = {};
+
+var p = new Proxy(target, {
+  getOwnPropertyDescriptor: function(t, prop) {
+    var foo = {};
+
+    Object.defineProperty(foo, "bar", {
+      configurable: false,
+      enumerable: true,
+      value: 1
+    });
+
+    return Object.getOwnPropertyDescriptor(foo, prop);
+  }
+});
+
+assert.throws(TypeError, function() {
+  Object.getOwnPropertyDescriptor(p, "bar");
+});
+
+reportCompare(0, 0);