c# - 使用反射执行审计

Question

我想执行审计作为单元测试的一部分，使用反射来验证一些假设，基本伪代码如下:

1. 对于给定程序集中的每个类，找到 Controller 类(ASP.NET MVC2)。

2. 对于这个类中的每个 Action ，找到任何装饰有给定的属性(让我们称之为目标属性)

3. 为每一个方法装饰具有感兴趣的属性，确保至少其中之一action 方法的参数实现给定的接口(interface)(让我们称之为ITarget).

我将如何执行此类检查？ (欢迎使用 C# 或 VB.NET 回答)

编辑:

我在这里发布执行此检查的最终代码(已翻译为 VB.NET):

    Dim ass As Assembly = Assembly.GetAssembly(GetType(Web.WebConfiguratorMarker))

    Dim methodsToCheck = ass.GetTypes().
                         Where(Function(t) t.IsSubclassOf(GetType(Controller))).
                         SelectMany(Function(t) t.GetMethods()).
                         Where(Function(m) m.GetCustomAttributes(GetType(AutoValidateJsonModelAttribute), False).Length > 0).
                         Where(Function(m) m.ReturnType Is GetType(ActionResult)).ToArray()

    For Each method In methodsToCheck

        Dim implementsIValidatable As Boolean = False

        For Each param In method.GetParameters()
            If GetType(IValidatable).IsAssignableFrom(param.ParameterType) Then
                implementsIValidatable = True
                Exit For
            End If
        Next

        Assert.True(implementsIValidatable, String.Format("Controller of type [{0}] has an action [{1}] that is decorated with <AutoValidateJsonModel()> but does not have a IValidatable instance as a param", method.DeclaringType, method.Name))

    Next

Answer 1

var assembly = System.Reflection.Assembly.GetExecutingAssembly();

var methods = assembly.GetTypes()
              .Where(t => t is System.Web.Mvc.Controller)
              .SelectMany(t => t.GetMethods())
              .Where(m => m.ReturnType is ActionResult)
              .Where(m => m.GetCustomAttributes(typeof(TargetAttribute), false).Length > 0)
              .ToArray();

bool implementsITarget = false;

foreach(method in methods)
{
    foreach(param in method.GetParameters())
    {
        if(param.ParameterType is ITarget) 
        {
            implementsITarget = true;
            break;
        }
    }
    Assert.True(implementsITarget , String.Format("Controller {0} has action {1} that does not implement ITarget but is decorated with TargetAttribute", method.DeclaringType, method.Name) );
    implementsITarget = false;
}