michael@0: /*
michael@0:  * Call the trap with the handler as the this value, the target as the first
michael@0:  * argument, the name of the property as the second argument, and the descriptor
michael@0:  * as the third argument.
michael@0:  */
michael@0: var target = {};
michael@0: var called = false;
michael@0: var handler = {
michael@0:     defineProperty: function (target1, name, desc1) {
michael@0:         assertEq(this, handler);
michael@0:         assertEq(target1, target);
michael@0:         assertEq(name, 'foo');
michael@0:         assertEq(desc1 == desc, false);
michael@0:         assertEq(desc1.value, 'bar');
michael@0:         assertEq(desc1.writable, true);
michael@0:         assertEq(desc1.enumerable, false);
michael@0:         assertEq(desc1.configurable, true);
michael@0:         called = true;
michael@0:     }
michael@0: }
michael@0: var desc = {
michael@0:     value: 'bar',
michael@0:     writable: true,
michael@0:     enumerable: false,
michael@0:     configurable: true
michael@0: };
michael@0: 
michael@0: var p = new Proxy(target, handler);
michael@0: Object.defineProperty(p, 'foo', desc);
michael@0: assertEq(called, true);
michael@0: assertEq(Object.isExtensible(target), true);
michael@0: assertEq(Object.isExtensible(p), true);
michael@0: Object.preventExtensions(target);
michael@0: assertEq(Object.isExtensible(target), false);
michael@0: assertEq(Object.isExtensible(p), false);