Akka.Net测试儿童演员的TestKit创作/监督

Question

我有类似于下面的Akka.Net代码，我正在尝试为它编写测试：

public class DoesSomethingActor : UntypedActor
{
    protected override void OnReceive(object message)
    {

    }
}

public class ForwardsMessagesActor : UntypedActor
{
    protected override void OnReceive(object message)
    {
        var actor = Context.ActorOf(Context.DI().Props<DoesSomethingActor>(), "DoesSomethingWorker");

        for (int i = 0; i < 5; i++)
        {
            actor.Tell(message + " " + i);
        }
    }
}

我已经完成了这个测试，但是我显然遗漏了一些东西，因为我根本没有使用太多的TestKit。关于如何使用TestKit测试这个问题，还没有正式的文档吗？

//creating actor mocks with Moq seems to confuse Akka - it just doesn't work 
//but creating mock classes manually like this, 
//then configuring them in the DI container works
public class DoesSomethingActorSpy : DoesSomethingActor
{
    public static List<object> ReceivedMessages = new List<object>();

    protected override void OnReceive(object message)
    {
        ReceivedMessages.Add(message);
    }
}

    [TestMethod]
    public void ForwardsMessagesActor_Creates5Messages()
    {
        //set up DI container to use DoesSomethingActorSpy as a child actor
        ContainerBuilder builder = new ContainerBuilder();
        builder.RegisterType<ForwardsMessagesActor>();
        builder.RegisterType<DoesSomethingActorSpy>().As<DoesSomethingActor>();
        IContainer container = builder.Build();

        var propsResolver = new AutoFacDependencyResolver(container, Sys);

        var actor = ActorOfAsTestActorRef<ForwardsMessagesActor>(propsResolver.Create<ForwardsMessagesActor>());

        actor.Tell("Test");

        //this looks wrong, I probably should be using something from TestKit
        Thread.Sleep(10);

        CollectionAssert.AreEquivalent(
            new[] { "Test 0", "Test 1", "Test 2", "Test 3", "Test 4" },
            DoesSomethingActorSpy.ReceivedMessages);
    }

我应该如何创造模拟演员？在TestKit上有什么方法我可以调用等待直到所有消息都被处理了吗？

Answer 1

引用自Akka.TestKit

测试父/子关系更为复杂。在这种情况下，Akka.NET提供简单抽象的承诺使得测试更加困难。 测试这种关系的最简单方法是使用消息传递。例如，您可以创建一个父角色，其子角色在启动时向另一个参与者发送消息。或者，您可以让家长将一条消息转发给孩子，然后孩子可以回复原始发件人，例如： 公共类ChildActor : ReceiveActor { public ChildActor() { ReceiveAny(o => Sender.Tell("hello!"))；}公共类ParentActor : ReceiveActor { public ParentActor() { var child = Context.ActorOf(Props.Create(() => new ChildActor()；ReceiveAny(o => child.Forward(o))；} TestFixture公共类ParentGreeterSpecs : TestKit {TestKit void Parent_should_create_child() { //验证子消息是通过发送消息//创建的，该消息//被转发给子发送方，并且哪个子响应具有var parentProps = Props.Create(() =>新ParentActor())；var = ActorOfAsTestActorRef(parentProps，TestActor)；parent.Tell(“这应该转发给子节点”)；ExpectMsg(“你好！”)；} 关于测试父母/子女关系的警告 避免将代码与层次结构过度耦合！ 过度测试父/子关系可以将测试与层次结构实现相结合。这会增加以后重构代码的成本，因为这会迫使许多测试重写。您需要在验证您的意图和测试您的实现之间取得平衡。