michael@0: var objectProxy = Proxy.create({});
michael@0: var functionProxy = Proxy.createFunction({}, function() {}, function() {});
michael@0: 
michael@0: assertEq(Object.prototype.toString.call(objectProxy), '[object Object]');
michael@0: assertEq(Object.prototype.toString.call(functionProxy), '[object Function]');
michael@0: assertEq(Function.prototype.toString.call(functionProxy), 'function () {}');
michael@0: try {
michael@0:   Function.prototype.toString.call(objectProxy);
michael@0:   assertEq(true, false);
michael@0: } catch (e) {
michael@0:   assertEq(!!/incompatible/.exec(e), true);
michael@0: }