diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/proxy/testDirectProxyDefineProperty1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/proxy/testDirectProxyDefineProperty1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// Forward to the target if the trap is not defined
+var target = {};
+Object.defineProperty(Proxy(target, {}), 'foo', {
+    value: 'bar',
+    writable: true,
+    enumerable: false,
+    configurable: true
+});
+var desc = Object.getOwnPropertyDescriptor(target, 'foo');
+assertEq(desc.value, 'bar');
+assertEq(desc.writable, true);
+assertEq(desc.enumerable, false);
+assertEq(desc.configurable, true);