michael@0: /*
michael@0:  * Call the trap with the handler as the this value and the target as the first
michael@0:  * argument.
michael@0:  */
michael@0: var target = {};
michael@0: var called = false;
michael@0: var handler = {
michael@0:     preventExtensions: function (target1) {
michael@0:         assertEq(this, handler);
michael@0:         assertEq(target1, target);
michael@0:         Object.preventExtensions(target1);
michael@0:         called = true;
michael@0:         return true;
michael@0:     }
michael@0: };
michael@0: Object.preventExtensions(new Proxy(target, handler));
michael@0: assertEq(called, true);