michael@0: // Return the descriptor returned by the trap
michael@0: var target = {};
michael@0: Object.defineProperty(target, 'foo', {
michael@0:     value: 'bar',
michael@0:     writable: true,
michael@0:     enumerable: false,
michael@0:     configurable: true
michael@0: });
michael@0: var desc = {
michael@0:     value: 'baz',
michael@0:     writable: false,
michael@0:     enumerable: true,
michael@0:     configurable: true
michael@0: };
michael@0: var desc1 = Object.getOwnPropertyDescriptor(new Proxy(target, {
michael@0:     getOwnPropertyDescriptor: function (target, name) {
michael@0:         return desc;
michael@0:     }
michael@0: }), 'foo');
michael@0: assertEq(desc1 == desc, false);
michael@0: assertEq(desc1.value, 'baz');
michael@0: assertEq(desc1.writable, false);
michael@0: assertEq(desc1.enumerable, true);
michael@0: assertEq(desc1.configurable, true);
michael@0: 
michael@0: var desc = {};
michael@0: var desc1 = Object.getOwnPropertyDescriptor(new Proxy(target, {
michael@0:     getOwnPropertyDescriptor: function (target, name) {
michael@0:         return desc;
michael@0:     }
michael@0: }), 'foo');
michael@0: assertEq(desc1 == desc, false);
michael@0: assertEq(desc1.value, undefined);
michael@0: assertEq(desc1.writable, false);
michael@0: assertEq(desc1.enumerable, false);
michael@0: assertEq(desc1.configurable, false);