在单元测试中验证Autofac注册

Question

我正在向我的Container注册许多类型，实现各种接口。

在一些编程方式中，我想要一个单元测试来检查所有解析是否成功，这意味着在注册中没有循环或缺失依赖关系。

我尝试添加像这样：

 [TestMethod] 
     public void Resolve_CanResolveAllTypes() 
     { 
      foreach (var registration in _container.ComponentRegistry.Registrations) 
      { 
       var instance = _container.Resolve(registration.Activator.LimitType); 
       Assert.IsNotNull(instance); 
      } 
     } 

但它在第一次运行失败的解决Autofac.Core.Lifetime.LifetimeScope，虽然我接受ILifetimeScope作为参数的方法，并得到它就好了我的应用程序启动时。

Answer 1

下面的代码终于为我工作：

private IContainer _container; 

[TestMethod] 
public void Resolve_CanResolveAllTypes() 
{ 
    foreach (var componentRegistration in _container.ComponentRegistry.Registrations) 
    { 
     foreach (var registrationService in componentRegistration.Services) 
     { 
      var registeredTargetType = registrationService.Description; 
      var type = GetType(registeredTargetType); 
      if (type == null) 
      { 
       Assert.Fail($"Failed to parse type '{registeredTargetType}'"); 
      } 
      var instance = _container.Resolve(type); 
      Assert.IsNotNull(instance); 
      Assert.IsInstanceOfType(instance, componentRegistration.Activator.LimitType); 
     } 
    } 
} 

private static Type GetType(string typeName) 
{ 
    var type = Type.GetType(typeName); 
    if (type != null) 
    { 
     return type; 
    } 
    foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies()) 
    { 
     type = assembly.GetType(typeName); 
     if (type != null) 
     { 
      return type; 
     } 
    } 
    return null; 
} 

GetType从https://stackoverflow.com/a/11811046/1236401