如何使用

Question

伊夫测试FormsAuthentication在asp.net的MVC 2.0应用进行的有以下方法接口：

Public Interface IAuthenticationService 
    Sub SetAuthentication(ByVal username As String) 
    Sub Logout() 
    Function IsLoggedIn() As Boolean 
End Interface 

我的实现是这样的：

Public Class Authentication 
    Implements IAuthenticationService 
    Public Sub Logout() Implements IAuthenticationService.Logout 
     FormsAuthentication.SignOut() 
     LoggedIn = False 
    End Sub 

    Public Sub SetAuthentication(ByVal username As String) Implements IAuthenticationService.SetAuthentication 
     FormsAuthentication.SetAuthCookie(username, True) 
     LoggedIn = True 
    End Sub 

    Public Function IsLoggedIn() As Boolean Implements IAuthenticationService.IsLoggedIn 
     If LoggedIn Then Return True 
     Return False 
    End Function 

    Private _isLoggedIn As Boolean = false 
    Public Property LoggedIn() As Boolean 
     Get 
      Return _isLoggedIn 
     End Get 
     Set(ByVal value As Boolean) 
      _isLoggedIn = value 
     End Set 
    End Property 
End Class 

在我的控制器类，我拥有这台对我的FormsAuthentication票证一个动作：

Public Function Login(ByVal username As String, ByVal password As String) As ActionResult 

     _authenticationService.SetAuthentication(username) 
     Return View() 
    End Function 

我的问题是如何测试我的FormsA认证服务类上的认证。我使用Xunit/Moq写我的测试。当我调用我的操作时，我得到一个“System.NullReferenceException：对象引用未设置为对象的实例”，它告诉我FormsAuthentication对象为Null，因此我无法设置身份验证票证。 什么是解决这个问题的最佳解决方案。我会很高兴看到一些代码示例或参考资料，以便我可以获得一些启示。特别是如果该解决方案是嘲讽......

Answer 1

创建围绕FormsAuthentication类像这样的包装类...

Public Interface IFormsAuthentication 
    Sub SignIn(ByVal userName As String, ByVal createPersistentCookie As Bool) 
    Sub SignOut() 
End Interface 


Public Class FormsAuthenticationWrapper Implements IFormsAuthentication 

    Public Sub SignIn(ByVal userName As String, ByVal createPersistentCookie As Bool) Implements IFormsAuthentication.SignIn 
     FormsAuthentication.SetAuthCookie(userName, createPersistentCookie); 
    End Sub 

    Public Sub SignOut() Implements IFormsAuthentication.SignOut 
     FormsAuthentication.SignOut() 
    End Sub 

End Class 

然后，您可以在您的验证类通过IFormsAuthentication作为扶养（通过构造）。这将允许您在编写单元测试时模拟IFormsAuthentication调用。 :-)