如何使用NSubstitute模拟懒惰类

//Assert
Lazy<INotificationService> notificationService = Substitute.For<Lazy<INotificationService>>();
Service target = new Service(repository, notificationService);
//Act
target.SendNotify("Message");
//Arrange
notificationService.Received().Value.sendNotification(null, null, null, null);

上面的代码抛出一个异常。

惰性初始化类型没有公共的无参数构造函数

我使用c# 4.0和NSubstitute 1.2.1

var notificationService = Substitute.For<INotificationService>();
var target = new Service(repository, new Lazy<INotificationService>(() => notificationService));
target.SendNotify("Message");
notificationService.ReceivedWithAnyArgs().sendNotification(null, null, null, null);