测试定制AuthorizationAttribute时的NullReferenceException抛出 [英] NullReferenceException thrown when testing custom AuthorizationAttribute

查看：280 发布时间：2016/6/28 21:46:41 c# asp.net-mvc unit-testing nunit moq

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问题描述

我在拍摄一看：

How做我做一个单元测试来测试检查请求头的方法？

我想测试我写了一个自定义的AuthorizeAttribute。

我已经尝试了许多不同的事情来得到它的工作。这是我目前的尝试。

  [AttributeUsage（AttributeTargets.All，的AllowMultiple = FALSE，继承= TRUE）]
公共类ConfigurableAuthorizeAttribute：AuthorizeAttribute
{
    私人记录器记录=新的记录器（System.Reflection.MethodBase.GetCurrentMethod（）DeclaringType）;
    私人IRoleHelper roleHelper;    公共ConfigurableAuthorizeAttribute（）
    {
        roleHelper =新ADRoleHelper（）;
    }    公共ConfigurableAuthorizeAttribute（IRoleHelper roleHelper）
    {
        this.roleHelper = roleHelper;
    }    保护覆盖布尔AuthorizeCore（HttpContextBase的HttpContext）
    {
        如果（！httpContext.User.Identity.IsAuthenticated）
        {
            返回false;
        }        如果（this.roleHelper.IsUserInRole（this.Roles，HttpContext.Current.User.Identity.Name））
        {
            返回true;
        }        返回false;
    }    保护覆盖无效HandleUnauthorizedRequest（AuthorizationContext filterContext）
    {
        base.HandleUnauthorizedRequest（filterContext）;
        filterContext.Result =新RedirectResult（〜/家/未经授权）;
    }
}

  [测试]
公共无效unauthenticated_user_not_allowed_to_access_resource（）
{
    VAR用户=新的模拟＆LT;＆的IPrincipal GT;（）;
    user.Setup（U =＆GT; u.Identity.IsAuthenticated）.Returns（假）;    VAR authContext =新的模拟＆LT; AuthorizationContext＆GT;（）;
    authContext.Setup（AC =＆GT; ac.HttpContext.User）.Returns（user.Object）;    VAR configAtt =新ConfigurableAuthorizeAttribute（）;
    configAtt.OnAuthorization（authContext.Object）;    authContext.Verify（AC =＆GT; ac.Result == It.Is＆LT; RedirectResult＆GT;（R = GT; r.Url ==））;
}

不管我做什么，我总是得到一个System.NullReferenceException当我运行测试。它似乎永远不会让过去的OnAuthorization电话。堆栈跟踪如下：

结果消息：System.NullReferenceException：对象引用未
  设置为一个对象的一个实例。结果堆栈跟踪：在
  System.Web.Mvc.OutputCacheAttribute.GetChildActionFilterFinishCallback（ControllerContext
  controllerContext）在
  System.Web.Mvc.AuthorizeAttribute.OnAuthorization（AuthorizationContext
  filterContext）在
  ... ConfigurableAuthorizeAttributeTests.unauthenticated_user_not_allowed_to_access_resource（）
  在... ConfigurableAuthorizeAttributeTests.cs：行
  29

没有任何人有关于如何解决这个问题？任何想法

修改

我找到了解决办法。我还需要嘲笑ControllerDescriptor并确保HttpContextBase.Items返回一个新的字典。

工作code：

  VAR背景=新的模拟＆LT; HttpContextBase＆GT;（）;
context.Setup（C =＆GT; c.Items）.Returns（新词典＆下;对象时，对象＆gt;（））;
context.Setup（C =＆GT; c.User.Identity.IsAuthenticated）.Returns（假）;
VAR控制器=新的模拟＆LT; ControllerBase＆GT;（）;VAR actionDescriptor =新的模拟＆LT; ActionDescriptor＆GT;（）;
actionDescriptor.Setup（A =＆GT; a.ActionName）.Returns（「指数」）;
VAR controllerDescriptor =新的模拟＆LT; ControllerDescriptor＆GT;（）;
actionDescriptor.Setup（一个= GT; a.ControllerDescriptor）.Returns（controllerDescriptor.Object）;VAR controllerContext =新的ControllerContext（context.Object，新的RouteData（），controller.Object）;
VAR filterContext =新AuthorizationContext（controllerContext，actionDescriptor.Object）;
VAR ATT =新ConfigurableAuthorizeAttribute（）;att.OnAuthorization（filterContext）;Assert.That（filterContext.Result，Is.InstanceOf＆所述; RedirectResult＆GT;（））;
Assert.That（（（RedirectResult）filterContext.Result）的.url，Is.EqualTo（〜/家/未经授权））;

解决方案

我找到了解决办法。我还需要嘲笑ControllerDescriptor并确保HttpContextBase.Items返回一个新的字典。

工作code：

  VAR背景=新的模拟＆LT; HttpContextBase＆GT;（）;
context.Setup（C =＆GT; c.Items）.Returns（新词典＆下;对象时，对象＆gt;（））;
context.Setup（C =＆GT; c.User.Identity.IsAuthenticated）.Returns（假）;
VAR控制器=新的模拟＆LT; ControllerBase＆GT;（）;VAR actionDescriptor =新的模拟＆LT; ActionDescriptor＆GT;（）;
actionDescriptor.Setup（A =＆GT; a.ActionName）.Returns（「指数」）;
VAR controllerDescriptor =新的模拟＆LT; ControllerDescriptor＆GT;（）;
actionDescriptor.Setup（一个= GT; a.ControllerDescriptor）.Returns（controllerDescriptor.Object）;VAR controllerContext =新的ControllerContext（context.Object，新的RouteData（），controller.Object）;
VAR filterContext =新AuthorizationContext（controllerContext，actionDescriptor.Object）;
VAR ATT =新ConfigurableAuthorizeAttribute（）;att.OnAuthorization（filterContext）;Assert.That（filterContext.Result，Is.InstanceOf＆所述; RedirectResult＆GT;（））;
Assert.That（（（RedirectResult）filterContext.Result）的.url，Is.EqualTo（〜/家/未经授权））;

I have taken a look at:

I am trying to test a custom AuthorizeAttribute that I wrote.

I have tried many different things to get it to work. This is my current attempt.

[AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = true)]
public class ConfigurableAuthorizeAttribute : AuthorizeAttribute
{
    private Logger log = new Logger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
    private IRoleHelper roleHelper;

    public ConfigurableAuthorizeAttribute()            
    {
        roleHelper = new ADRoleHelper();
    }

    public ConfigurableAuthorizeAttribute(IRoleHelper roleHelper)            
    {
        this.roleHelper = roleHelper;
    }

    protected override bool AuthorizeCore(HttpContextBase httpContext)
    {
        if (!httpContext.User.Identity.IsAuthenticated)
        {
            return false;
        }

        if (this.roleHelper.IsUserInRole(this.Roles, HttpContext.Current.User.Identity.Name))
        {
            return true;
        }

        return false;
    }

    protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        base.HandleUnauthorizedRequest(filterContext);
        filterContext.Result = new RedirectResult("~/home/Unauthorized");            
    }


}

[Test]
public void unauthenticated_user_not_allowed_to_access_resource()
{
    var user = new Mock<IPrincipal>();
    user.Setup(u => u.Identity.IsAuthenticated).Returns(false);

    var authContext = new Mock<AuthorizationContext>();
    authContext.Setup(ac => ac.HttpContext.User).Returns(user.Object);

    var configAtt = new ConfigurableAuthorizeAttribute();
    configAtt.OnAuthorization(authContext.Object);

    authContext.Verify(ac => ac.Result == It.Is<RedirectResult>(r => r.Url == ""));
}

No matter what I do I always get a System.NullReferenceException when I run the test. It never seems to get past the OnAuthorization call. The stack trace is as follows:

Result Message: System.NullReferenceException : Object reference not set to an instance of an object. Result StackTrace: at System.Web.Mvc.OutputCacheAttribute.GetChildActionFilterFinishCallback(ControllerContext controllerContext) at System.Web.Mvc.AuthorizeAttribute.OnAuthorization(AuthorizationContext filterContext) at ...ConfigurableAuthorizeAttributeTests.unauthenticated_user_not_allowed_to_access_resource() in ...ConfigurableAuthorizeAttributeTests.cs:line 29

Does anybody have any ideas on how to solve this problem?

Edit

I found the solution. I also needed to mock ControllerDescriptor and make sure that HttpContextBase.Items returned a new Dictionary.

Working code:

var context = new Mock<HttpContextBase>();
context.Setup(c => c.Items).Returns(new Dictionary<object, object>());
context.Setup(c => c.User.Identity.IsAuthenticated).Returns(false);
var controller = new Mock<ControllerBase>();

var actionDescriptor = new Mock<ActionDescriptor>();
actionDescriptor.Setup(a => a.ActionName).Returns("Index");
var controllerDescriptor = new Mock<ControllerDescriptor>();            
actionDescriptor.Setup(a => a.ControllerDescriptor).Returns(controllerDescriptor.Object);

var controllerContext = new ControllerContext(context.Object, new RouteData(), controller.Object);
var filterContext = new AuthorizationContext(controllerContext, actionDescriptor.Object);
var att = new ConfigurableAuthorizeAttribute();

att.OnAuthorization(filterContext);

Assert.That(filterContext.Result, Is.InstanceOf<RedirectResult>());
Assert.That(((RedirectResult)filterContext.Result).Url, Is.EqualTo("~/home/Unauthorized"));

解决方案

I found the solution. I also needed to mock ControllerDescriptor and make sure that HttpContextBase.Items returned a new Dictionary.

Working code:

var context = new Mock<HttpContextBase>();
context.Setup(c => c.Items).Returns(new Dictionary<object, object>());
context.Setup(c => c.User.Identity.IsAuthenticated).Returns(false);
var controller = new Mock<ControllerBase>();

var actionDescriptor = new Mock<ActionDescriptor>();
actionDescriptor.Setup(a => a.ActionName).Returns("Index");
var controllerDescriptor = new Mock<ControllerDescriptor>();            
actionDescriptor.Setup(a => a.ControllerDescriptor).Returns(controllerDescriptor.Object);

var controllerContext = new ControllerContext(context.Object, new RouteData(), controller.Object);
var filterContext = new AuthorizationContext(controllerContext, actionDescriptor.Object);
var att = new ConfigurableAuthorizeAttribute();

att.OnAuthorization(filterContext);

Assert.That(filterContext.Result, Is.InstanceOf<RedirectResult>());
Assert.That(((RedirectResult)filterContext.Result).Url, Is.EqualTo("~/home/Unauthorized"));

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测试定制AuthorizationAttribute时的NullReferenceException抛出 [英] NullReferenceException thrown when testing custom AuthorizationAttribute

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测试定制AuthorizationAttribute时的NullReferenceException抛出 [英] NullReferenceException thrown when testing custom AuthorizationAttribute

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