asp.net-mvc – Moq Roles.AddUserToRole测试

我正在使用Moq和MvcContrib TestHelper类为ASP.NET MVC 1.0中的项目编写单元测试.我遇到了一个问题.

当我来到我的AccountController中的Roles.AddUserToRole时,我得到一个System.NotSupportedException. Roles类是静态的,Moq不能模拟静态类.

我能做什么？

您可以使用像DI(依赖注入)这样的模式.在您的情况下,我会将RoleProvider传递给AccountController,默认情况下它将是默认的RoleProvider,并且是测试中的模拟对象.就像是：

public class AccountController
{
    private MembershipProvider _provider;
    private RoleProvider roleProvider;

    public AccountController()
      : this(null, null)
    {
    }

    public AccountController(MembershipProvider provider, RoleProvider roleProvider)
    {
      _provider = provider ?? Membership.Provider;
      this.roleProvider = roleProvider ?? System.Web.Security.Roles.Provider;
    }
}

MVC运行时将调用默认构造函数,而构造函数又将使用默认角色提供程序初始化AccountController.在单元测试中,您可以直接调用重载的构造函数,并传递MockRoleProvider(或使用Moq为您创建)：

[Test]
public void AccountControllerTest()
{
    AccountController controller = new AccountController(new MockMembershipProvider(), new MockRoleProvider());
}

编辑：这是我如何模拟整个HttpContext,包括主要用户.
要获取HttpContext的Moq版本：

public static HttpContextBase GetHttpContext(IPrincipal principal)
{
  var httpContext = new Mock<HttpContextBase>();
  var request = new Mock<HttpRequestBase>();
  var response = new Mock<HttpResponseBase>();
  var session = new Mock<HttpSessionStateBase>();
  var server = new Mock<HttpServerUtilityBase>();
  var user = principal;


  httpContext.Setup(ctx => ctx.Request).Returns(request.Object);
  httpContext.Setup(ctx => ctx.Response).Returns(response.Object);
  httpContext.Setup(ctx => ctx.Session).Returns(session.Object);
  httpContext.Setup(ctx => ctx.Server).Returns(server.Object);
  httpContext.Setup(ctx => ctx.User).Returns(user);

  return httpContext.Object;
}

Principal的模拟实现：

public class MockPrincipal : IPrincipal
  {
    private IIdentity _identity;
    private readonly string[] _roles;

    public MockPrincipal(IIdentity identity, string[] roles)
    {
      _identity = identity;
      _roles = roles;
    }

    public IIdentity Identity
    {
      get { return _identity; }
      set { this._identity = value; }
    }

    public bool IsInRole(string role)
    {
      if (_roles == null)
        return false;
      return _roles.Contains(role);
    }
  }

MockIdentity：

public class MockIdentity : IIdentity
  {
    private readonly string _name;

    public MockIdentity(string userName)    {
      _name = userName;
    }

    public override string AuthenticationType
    {
      get { throw new System.NotImplementedException(); }
    }

    public override bool IsAuthenticated
    {
      get { return !String.IsNullOrEmpty(_name); }
    }

    public override string Name
    {
      get { return _name; }
    }
  }

神奇的召唤：

MockIdentity identity = new MockIdentity("JohnDoe");
var httpContext = MoqHelpers.GetHttpContext(new MockPrincipal(identity, null));

请注意,我编辑了上面的代码,省略了一些自定义的东西,但我很确定这应该仍然有效.