The Tor Browser / file revision

 // obj.getOwnPropertyDescriptor works on accessor properties.

 var g = newGlobal();

 var dbg = new Debugger;

 var gdo = dbg.addDebuggee(g);

 g.called = false;

 g.eval("var a = {get x() { called = true; }};");

 var desc = gdo.getOwnPropertyDescriptor("a").value.getOwnPropertyDescriptor("x");

 assertEq(g.called, false);

 assertEq(desc.enumerable, true);

 assertEq(desc.configurable, true);

 assertEq("value" in desc, false);

 assertEq("writable" in desc, false);

 assertEq(desc.get instanceof Debugger.Object, true);

 assertEq(desc.get.class, "Function");

 assertEq(desc.set, undefined);