在单元测试中验证 Autofac 注册

Question

我正在为我的 注册多种类型Container，实现各种接口。

以某种编程方式，我想要一个单元测试来检查所有解析是否成功，这意味着注册中没有循环或丢失的依赖项。

我试图添加这样的东西：

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

但是它在第一次运行时失败了Autofac.Core.Lifetime.LifetimeScope，尽管我有一些方法可以接受ILifetimeScope作为参数并在我的应用程序启动时得到它。

Answer 1

以下代码最终对我有用：

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借自/sf/answers/826773251/