NUnit测试方法事件引发抛出错误

我想为下面提到的PublishDataProvider创建单元测试。因为我是单元测试新手。我尝试了下面的方法,但我得到了错误。我怀疑我尝试的方式是错误的。谁能给我指路吗。

类文件代码:PublishDataProvider。反恐精英

    private DataRouter _dataRouter;
    public event EventHandler<PhysiologyData> DataUpdated;

    public PublishDataProvider(IUnityContainer container)
    {  
        _DataRouter = container.Resolve<DataRouter>(new ResolverOverride[] {
                        new ParameterOverride("clienttype",ClientType.VCG)});
        if(_physiologyDataRouter != null)
        {
            _dataRouter.ModuleDataReceived += OnModuleDataReceived;
        }
    }

    private void OnModuleDataReceived(ModuleData moduledata)
    {
        moduledata.DataType = DataType.ModuleData;
        DataUpdated?.Invoke(this, moduledata);
    }

文件数据路由器。反恐精英

public event ModuleDataEventHandler ModuleDataReceived;

 private void SendBatteryStatus(object sender, EventArgs e)
    {
     ModuleDataReceived?.Invoke(physmoduleinfo);
    }

测试文件:Test。反恐精英

    protected static IUnityContainer Container { get; set; }
    protected IDataProvider DataProvider { get; set; }
    private DataRouter _dataRouter;
    [Test]
    public void TestPublishDataProvider()
    {
        Container = new UnityContainer();   
        Container.LoadConfiguration();
       _dataRouter = MockRepository.GenerateMock<DataRouter>(ClientType.VCG, Container);
        Container.RegisterInstance(_dataRouter, new ContainerControlledLifetimeManager());
        MarkerDataBuffer MarkerDataBuffer = new MarkerDataBuffer();
        _physiologyDataRouter.Raise(x => x.MarkerDataReceived += null, MarkerDataBuffer);

        var wasCalled = false;
        _physiologyDataRouter.MarkerDataReceived += (e) => wasCalled = true;
        NUnit.Framework.Assert.IsTrue(wasCalled);

错误:

系统InvalidOperationException:无效调用、使用了最后一个调用或未进行任何调用(确保调用的是虚拟(C#)/Overridable(VB)方法)。