45

我正在使用shanselmann 的 MvcMockHelper类使用 Moq 模拟一些 HttpContext 东西，但我遇到的问题是能够在我的 MVC 控制器中为我的模拟会话对象分配一些东西，然后能够在我的单元测试中读取相同的值以进行验证目的。

我的问题是如何将存储集合分配给模拟会话对象以允许诸如 session["UserName"] = "foo" 之类的代码保留“foo”值并使其在单元测试中可用。

4

7 回答 7

65

我从 Scott Hanselman 的MVCMockHelper开始，添加了一个小类并进行了如下所示的修改，以允许控制器正常使用 Session 和单元测试来验证控制器设置的值。

/// <summary>
/// A Class to allow simulation of SessionObject
/// </summary>
public class MockHttpSession : HttpSessionStateBase
{
    Dictionary<string, object> m_SessionStorage = new Dictionary<string, object>();

    public override object this[string name]
    {
        get { return m_SessionStorage[name]; }
        set { m_SessionStorage[name] = value; }
    }
}

//In the MVCMockHelpers I modified the FakeHttpContext() method as shown below
public static HttpContextBase FakeHttpContext()
{
    var context = new Mock<HttpContextBase>();
    var request = new Mock<HttpRequestBase>();
    var response = new Mock<HttpResponseBase>();
    var session = new MockHttpSession();
    var server = new Mock<HttpServerUtilityBase>();

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

    return context.Object;
}

//Now in the unit test i can do
AccountController acct = new AccountController();
acct.SetFakeControllerContext();
acct.SetBusinessObject(mockBO.Object);

RedirectResult results = (RedirectResult)acct.LogOn(userName, password, rememberMe, returnUrl);
Assert.AreEqual(returnUrl, results.Url);
Assert.AreEqual(userName, acct.Session["txtUserName"]);
Assert.IsNotNull(acct.Session["SessionGUID"]);

它并不完美，但足以用于测试。

于 2009-03-27T18:23:31.390 回答
39

这里使用 Moq 3.0.308.2 是我在单元测试中设置帐户控制器的示例：

    private AccountController GetAccountController ()
    {
      .. setup mocked services..

      var accountController = new AccountController (..mocked services..);

      var controllerContext = new Mock<ControllerContext> ();
      controllerContext.SetupGet(p => p.HttpContext.Session["test"]).Returns("Hello World");
      controllerContext.SetupGet(p => p.HttpContext.User.Identity.Name).Returns(_testEmail);
      controllerContext.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(true);
      controllerContext.SetupGet(p => p.HttpContext.Response.Cookies).Returns(new HttpCookieCollection ());

      controllerContext.Setup (p => p.HttpContext.Request.Form.Get ("ReturnUrl")).Returns ("sample-return-url");
      controllerContext.Setup (p => p.HttpContext.Request.Params.Get ("q")).Returns ("sample-search-term");

      accountController.ControllerContext = controllerContext.Object;

      return accountController;
    }

然后在您的控制器方法中，以下内容应返回“Hello World”

string test = Session["test"].ToString ();
于 2009-03-13T20:21:06.330 回答
3

我做了一个比@RonnBlack 发布的答案稍微复杂一点的 Mock

public class HttpSessionStateDictionary : HttpSessionStateBase
{
    private readonly NameValueCollection keyCollection = new NameValueCollection();

    private readonly Dictionary<string, object> _values = new Dictionary<string, object>();

    public override object this[string name]
    {
        get { return _values.ContainsKey(name) ? _values[name] : null; }
        set { _values[name] = value; keyCollection[name] = null;}
    }

    public override int CodePage
    {
        get { throw new NotImplementedException(); }
        set { throw new NotImplementedException(); }
    }

    public override HttpSessionStateBase Contents
    {
        get { throw new NotImplementedException(); }
    }

    public override HttpCookieMode CookieMode
    {
        get { throw new NotImplementedException(); }
    }

    public override int Count
    {
        get { return _values.Count; }
    }

     public override NameObjectCollectionBase.KeysCollection Keys
{
    get { return keyCollection.Keys; }
}

    public Dictionary<string, object> UnderlyingStore
    {
        get { return _values; }
    }

    public override void Abandon()
    {
        _values.Clear();
    }

    public override void Add(string name, object value)
    {
        _values.Add(name, value);
    }

    public override void Clear()
    {
        _values.Clear();
    }

    public override void CopyTo(Array array, int index)
    {
        throw new NotImplementedException();
    }

    public override bool Equals(object obj)
    {
        return _values.Equals(obj);
    }

    public override IEnumerator GetEnumerator()
    {
        return _values.GetEnumerator();
    }

    public override int GetHashCode()
    {
        return (_values != null ? _values.GetHashCode() : 0);
    }

    public override void Remove(string name)
    {
        _values.Remove(name);
    }

    public override void RemoveAll()
    {
        _values.Clear();
    }

    public override void RemoveAt(int index)
    {
        throw new NotImplementedException();
    }

    public override string ToString()
    {
        return _values.ToString();
    }

    public bool Equals(HttpSessionStateDictionary other)
    {
        if (ReferenceEquals(null, other)) return false;
        if (ReferenceEquals(this, other)) return true;
        return Equals(other._values, _values);
    }
}
于 2011-02-24T23:38:01.830 回答
2

我刚刚找到了一个很好的例子，说明 Oxite 团队如何伪造他们的 HttpSessionState 并在该伪造中维护一个 SessionStateItemCollection 集合。在我的情况下，这应该和最小起订量一样有效。

编辑：

此示例的 URL 是http://oxite.codeplex.com/sourcecontrol/changeset/view/33871?projectName=oxite#388065

于 2009-03-02T23:06:53.417 回答
0

我认为你可以对模拟设置一个期望，它应该返回一个特定的值。模拟不用作实际的赝品，而是您可以断言行为的东西。

听起来您实际上是在寻找一个适配器，您可以围绕会话进行包装，您可以在测试期间提供不同的实现，并且在运行时它会返回 HttpContext Session 项？

这有意义吗？

于 2009-02-11T14:37:39.207 回答
0

谢谢@RonnBlack 的解决方案！就我而言，我不断收到此异常，因为 Session.SessionID 为空：

System.NotImplementedException was unhandled by user code
  HResult=-2147467263
  Message=The method or operation is not implemented.
  Source=System.Web
  StackTrace:
       at System.Web.HttpSessionStateBase.get_SessionID()

Mock<HttpSessionStateBase>为了解决这个问题，我使用 Moq而不是他的 MockHttpSession以这种方式实现 @RonnBlack 的代码：

    private readonly MyController controller = new MyController();

    [TestFixtureSetUp]
    public void Init()
    {
        var session = new Mock<HttpSessionStateBase>();
        session.Setup(s => s.SessionID).Returns(Guid.NewGuid().ToString());
        var request = new Mock<HttpRequestBase>();
        var response = new Mock<HttpResponseBase>();
        var server = new Mock<HttpServerUtilityBase>();
        // Not working - IsAjaxRequest() is static extension method and cannot be mocked
        // request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */);
        // use this
        request.SetupGet(x => x.Headers).Returns(
            new System.Net.WebHeaderCollection
            {
                {"X-Requested-With", "XMLHttpRequest"}
            });

        var context = new Mock<HttpContextBase>();
        //context
        context.Setup(ctx => ctx.Request).Returns(request.Object);
        context.Setup(ctx => ctx.Response).Returns(response.Object);
        context.Setup(ctx => ctx.Session).Returns(session.Object);
        context.Setup(ctx => ctx.Server).Returns(server.Object);
        context.SetupGet(x => x.Request).Returns(request.Object);
        context.SetupGet(p => p.Request.Url).Returns(new Uri("http://www.mytesturl.com"));
        var queryString = new NameValueCollection { { "code", "codeValue" } };
        context.SetupGet(r => r.Request.QueryString).Returns(queryString);

        controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller);
    }

详情请见http://weblogs.asp.net/gunnarpeipman/using-moq-to-mock-asp-net-mvc-httpcontextbase

于 2015-08-06T17:09:31.393 回答
0

只是为了 Session 更简单的方法是在父类中创建 Session 对象并像这样使用它

    public class DalBl : IDalBl
{
    public dynamic Session
    {
        get { return HttpContext.Current.Session; }
    }
}

并在 unitTest

            var session = new  Dictionary<string, object>();
        var moq = new Moq.Mock<IDalBl>();
        moq.Setup(d => d.Session).Returns(session);
于 2019-04-25T17:15:53.567 回答