diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-defineProperty-surfaces-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-defineProperty-surfaces-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// Debugger.Object.prototype.defineProperty with too few arguments throws.
+
+load(libdir + "asserts.js");
+
+var g = newGlobal();
+var dbg = new Debugger;
+var gw = dbg.addDebuggee(g);
+assertThrowsInstanceOf(function () { gw.defineProperty("x"); }, TypeError);