diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/surfaces-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/surfaces-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+// Debugger.prototype.onDebuggerStatement
+
+load(libdir + 'asserts.js');
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+gc();  // don't assert marking debug hooks
+assertEq(dbg.onDebuggerStatement, undefined);
+
+function f() {}
+
+assertThrowsInstanceOf(function () { dbg.onDebuggerStatement = null; }, TypeError);
+assertThrowsInstanceOf(function () { dbg.onDebuggerStatement = "bad"; }, TypeError);
+assertThrowsInstanceOf(function () { dbg.onDebuggerStatement = {}; }, TypeError);
+dbg.onDebuggerStatement = f;
+assertEq(dbg.onDebuggerStatement, f);
+
+assertEq(Object.getOwnPropertyNames(dbg).length, 0);
+var desc = Object.getOwnPropertyDescriptor(Debugger.prototype, "onDebuggerStatement");
+assertEq(desc.configurable, true);
+assertEq(desc.enumerable, false);
+
+assertThrowsInstanceOf(function () { desc.get(); }, TypeError);
+assertThrowsInstanceOf(function () { desc.get.call(undefined); }, TypeError);
+assertThrowsInstanceOf(function () { desc.get.call(Debugger.prototype); }, TypeError);
+assertEq(desc.get.call(dbg), f);
+
+assertThrowsInstanceOf(function () { desc.set(); }, TypeError);
+assertThrowsInstanceOf(function () { desc.set.call(dbg); }, TypeError);
+assertThrowsInstanceOf(function () { desc.set.call({}, f); }, TypeError);
+assertThrowsInstanceOf(function () { desc.set.call(Debugger.prototype, f); }, TypeError);