1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/defineProperty/targetdesc-not-compatible-descriptor-not-configurable-target.js b/js/src/tests/test262/built-ins/Proxy/defineProperty/targetdesc-not-compatible-descriptor-not-configurable-target.js
new file mode 100644
index 0000000000..c23e63cd9f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/defineProperty/targetdesc-not-compatible-descriptor-not-configurable-target.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 9.5.6
+description: >
+    Throw a TypeError exception if Desc and target property descriptor are not
+    compatible and trap result is true.
+info: |
+    [[DefineOwnProperty]] (P, Desc)
+
+    ...
+    20. Else targetDesc is not undefined,
+        a. If IsCompatiblePropertyDescriptor(extensibleTarget, Desc ,
+        targetDesc) is false, throw a TypeError exception.
+    ...
+features: [Proxy]
+---*/
+
+var target = {};
+var p = new Proxy(target, {
+  defineProperty: function(t, prop, desc) {
+    return true;
+  }
+});
+
+Object.defineProperty(target, "foo", {
+  value: 1,
+  configurable: false
+});
+
+assert.throws(TypeError, function() {
+  Object.defineProperty(p, "foo", {
+    value: 1,
+    configurable: true
+  });
+});
+
+reportCompare(0, 0);