Akka.net和单元测试
本文关键字:单元测试 net Akka | 更新日期: 2023-09-27 18:00:06
我想使用Akka.net TestKit来编写单元测试,但我有一个问题。我有一个类SubscriptionService,它负责向选定的参与者传输消息。
public class SubscriptionService : ReceiveActor
{
private readonly ActorSelection service1;
private readonly ActorSelection service2;
public SubscriptionService()
{
this.service1 = Context.ActorSelection("Service1");
this.service2 = Context.ActorSelection("Service2");
this.Receive<RequestMessage>(message => this.ProcessRequestMessage(message));
}
private void ProcessRequestMessage(RequestMessage message)
{
this.service1.Tell(message);
this.service2.Tell(message);
}
我如何测试这种行为?我创建了这个测试,但在这个测试中我得到了异常。"附加信息:断言。失败。失败:等待消息时超时00:00:03"
[TestClass]
public class SubscriptionServiceUnitTests : TestKit
{
[TestMethod]
public void Test1()
{
var subscriptionServiceRef = this.ActorOfAsTestActorRef<SubscriptionService>("SubscriptionService");
subscriptionServiceRef.Tell(new RequestMessage());
var answer = this.ExpectMsg<RequestMessage>();
}
我的意思是,我如何在Test1方法中获得service1和service2的消息?
ExpectMsg
只有在与一种称为TestActor
的特殊演员组合时才有效。您可以从测试套件访问/创建它。它的作用是捕获并验证发送给它的消息
如果你稍微重新设计一下SubscriptionService
actor,你可以将测试actor refs传递给它。最简单的方法是简单地通过actor构造函数注入actor ref-我使用了ICanTell
接口,这是一种更通用的形式,由actor ref和actor selection实现:
public class SubscriptionService : ReceiveActor
{
private readonly ICanTell service1;
private readonly ICanTell service2;
public SubscriptionService(ICanTell service1, ICanTell service2)
{
this.service1 = service1;
this.service2 = service2;
this.Receive<RequestMessage>(message => this.ProcessRequestMessage(message));
}
通过这种方式,您可以使用创建您的演员
Context.ActorOf(Props.Create(() => new SubscriptionService(Context.ActorSelection("Service1"), Context.ActorSelection("Service2")));
要测试它,请在TestKit规范类中使用TestActor或TestProbe初始化它。