michael@0: // Forward to the target if the trap is not defined
michael@0: var proxy = Proxy(Object.create(Object.create(null, {
michael@0:     'foo': {
michael@0:         configurable: true
michael@0:     }
michael@0: }), {
michael@0:     'bar': {
michael@0:         configurable: true
michael@0:     }
michael@0: }), {});
michael@0: assertEq(({}).hasOwnProperty.call(proxy, 'foo'), false);
michael@0: assertEq(({}).hasOwnProperty.call(proxy, 'bar'), true);