如何使Unity容器将参数传递给单例构造函数?

作为一个新手,我必须使用WebApi和统一容器:

UnityContainer container = new UnityContainer();
container.RegisterType<IConfigurationReader, ServiceFabricConfigurationReader>();
container.RegisterType<ISettingsManager, SettingsManager>(new SingletonLifetimeManager());
container.RegisterFactory<ICosmosDbClientFactory>(c =>
{
    IConfigurationReader configReader = c.Resolve<IConfigurationReader>();
    string primaryConnectionString = configReader.ReadConfig(ConfigurationReaderKeys.CosmosDbConnectionString);
    string dbName = configReader.ReadConfig(ConfigurationReaderKeys.CosmosDbDatabaseName);
    DocumentClient client1 = CosmosClientFactory.CreateClient(new DataStoreInfo(primaryConnectionString), retryPolicy);
    DocumentClient client2 = CosmosClientFactory.CreateClient(new DataStoreInfo(primaryConnectionString), retryPolicy);
    return new CosmosDbClientFactory(client1, client2, dbName);
});
config.DependencyResolver = new UnityResolver(container);
appBuilder.UseWebApi(config);

对于上面的依赖注入,我想再添加一个singleton,它当前使用以下代码来实例化自身:

IEventHubEventSender eventSender = new EventHubEventSender(
    new EventHubConfigReader(new DynamicResourceSyncer(configReader)),
    ServiceTypes.AnalyticsEventHub);

上面的代码已经在微服务的另一部分工作了,但是我想创建 eventSender 对象,因为这样我就可以在我尝试实现的API控制器单元测试中替换它。

container.RegisterType<IEventHubEventSender, EventHubEventSender>(new SingletonLifetimeManager());

1. new EventHubConfigReader(new DynamicResourceSyncer(configReader))
2. ServiceTypes.AnalyticsEventHub

如何让Unity将这些参数传递给singleton构造函数?