michael@0: // defineProperty can't re-define non-configurable properties.
michael@0: // Also: when defineProperty throws, the exception is native to the debugger
michael@0: // compartment, not a wrapper.
michael@0: 
michael@0: var g = newGlobal();
michael@0: var dbg = new Debugger;
michael@0: var gw = dbg.addDebuggee(g);
michael@0: gw.defineProperty("p", {value: 1});
michael@0: g.p = 4;
michael@0: assertEq(g.p, 1);
michael@0: 
michael@0: var threw;
michael@0: try {
michael@0:     gw.defineProperty("p", {value: 2});
michael@0:     threw = false;
michael@0: } catch (exc) {
michael@0:     threw = true;
michael@0:     assertEq(exc instanceof TypeError, true);
michael@0:     assertEq(typeof exc.message, "string");
michael@0:     assertEq(typeof exc.stack, "string");
michael@0: }
michael@0: assertEq(threw, true);
michael@0: 
michael@0: assertEq(g.p, 1);