我有一个web服务,我试图单元测试。在服务中,它从HttpContext中提取了几个值,如下所示:

 m_password = (string)HttpContext.Current.Session["CustomerId"];
 m_userID = (string)HttpContext.Current.Session["CustomerUrl"];

在单元测试中,我使用一个简单的工作请求创建上下文,如下所示:

SimpleWorkerRequest request = new SimpleWorkerRequest("", "", "", null, new StringWriter());
HttpContext context = new HttpContext(request);
HttpContext.Current = context;

然而,每当我试图设置HttpContext.Current.Session的值时

HttpContext.Current.Session["CustomerId"] = "customer1";
HttpContext.Current.Session["CustomerUrl"] = "customer1Url";

我得到空引用异常,说HttpContext.Current.Session是空的。

是否有方法在单元测试中初始化当前会话?


当前回答

我之前写过一些关于这方面的东西。

单元测试MVC3 .NET中的HttpContext.Current.Session

希望能有所帮助。

[TestInitialize]
public void TestSetup()
{
    // We need to setup the Current HTTP Context as follows:            
 
    // Step 1: Setup the HTTP Request
    var httpRequest = new HttpRequest("", "http://localhost/", "");
 
    // Step 2: Setup the HTTP Response
    var httpResponce = new HttpResponse(new StringWriter());
 
    // Step 3: Setup the Http Context
    var httpContext = new HttpContext(httpRequest, httpResponce);
    var sessionContainer = 
        new HttpSessionStateContainer("id", 
                                       new SessionStateItemCollection(),
                                       new HttpStaticObjectsCollection(), 
                                       10, 
                                       true,
                                       HttpCookieMode.AutoDetect,
                                       SessionStateMode.InProc, 
                                       false);
    httpContext.Items["AspSession"] = 
        typeof(HttpSessionState)
        .GetConstructor(
                            BindingFlags.NonPublic | BindingFlags.Instance,
                            null, 
                            CallingConventions.Standard,
                            new[] { typeof(HttpSessionStateContainer) },
                            null)
        .Invoke(new object[] { sessionContainer });
 
    // Step 4: Assign the Context
    HttpContext.Current = httpContext;
}

[TestMethod]
public void BasicTest_Push_Item_Into_Session()
{
    // Arrange
    var itemValue = "RandomItemValue";
    var itemKey = "RandomItemKey";
             
    // Act
    HttpContext.Current.Session.Add(itemKey, itemValue);
             
    // Assert
    Assert.AreEqual(HttpContext.Current.Session[itemKey], itemValue);
}

其他回答

你可以试试FakeHttpContext:

using (new FakeHttpContext())
{
   HttpContext.Current.Session["CustomerId"] = "customer1";       
}

试试这个方法。

public static HttpContext getCurrentSession()
  {
        HttpContext.Current = new HttpContext(new HttpRequest("", ConfigurationManager.AppSettings["UnitTestSessionURL"], ""), new HttpResponse(new System.IO.StringWriter()));
        System.Web.SessionState.SessionStateUtility.AddHttpSessionStateToContext(
        HttpContext.Current, new HttpSessionStateContainer("", new SessionStateItemCollection(), new HttpStaticObjectsCollection(), 20000, true,
        HttpCookieMode.UseCookies, SessionStateMode.InProc, false));
        return HttpContext.Current;
  }

如果您正在使用MVC框架,这应该可以工作。我使用Milox的FakeHttpContext并添加了一些额外的代码行。这个想法来自这个帖子:

http://codepaste.net/p269t8

这似乎在MVC 5中工作。我还没有尝试在早期版本的MVC。

HttpContext.Current = MockHttpContext.FakeHttpContext();

var wrapper = new HttpContextWrapper(HttpContext.Current);

MyController controller = new MyController();
controller.ControllerContext = new ControllerContext(wrapper, new RouteData(), controller);

string result = controller.MyMethod();

在asp.net Core / MVC 6 rc2中,你可以设置HttpContext

var SomeController controller = new SomeController();

controller.ControllerContext = new ControllerContext();
controller.ControllerContext.HttpContext = new DefaultHttpContext();
controller.HttpContext.Session = new DummySession();

Rc 1为

var SomeController controller = new SomeController();

controller.ActionContext = new ActionContext();
controller.ActionContext.HttpContext = new DefaultHttpContext();
controller.HttpContext.Session = new DummySession();

https://stackoverflow.com/a/34022964/516748

考虑使用Moq

new Mock<ISession>();

我们必须通过使用HttpContextManager来模拟HttpContext,并从我们的应用程序和单元测试中调用工厂

public class HttpContextManager 
{
    private static HttpContextBase m_context;
    public static HttpContextBase Current
    {
        get
        {
            if (m_context != null)
                return m_context;

            if (HttpContext.Current == null)
                throw new InvalidOperationException("HttpContext not available");

            return new HttpContextWrapper(HttpContext.Current);
        }
    }

    public static void SetCurrentContext(HttpContextBase context)
    {
        m_context = context;
    }
}

然后替换所有对HttpContext的调用。当前与HttpContextManager。当前和已获得相同的方法。然后在测试时,您还可以访问HttpContextManager并模拟您的期望

这是一个使用Moq的例子:

private HttpContextBase GetMockedHttpContext()
{
    var context = 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 = new Mock<IPrincipal>();
    var identity = new Mock<IIdentity>();
    var urlHelper = new Mock<UrlHelper>();

    var routes = new RouteCollection();
    MvcApplication.RegisterRoutes(routes);
    var requestContext = new Mock<RequestContext>();
    requestContext.Setup(x => x.HttpContext).Returns(context.Object);
    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.Setup(ctx => ctx.User).Returns(user.Object);
    user.Setup(ctx => ctx.Identity).Returns(identity.Object);
    identity.Setup(id => id.IsAuthenticated).Returns(true);
    identity.Setup(id => id.Name).Returns("test");
    request.Setup(req => req.Url).Returns(new Uri("http://www.google.com"));
    request.Setup(req => req.RequestContext).Returns(requestContext.Object);
    requestContext.Setup(x => x.RouteData).Returns(new RouteData());
    request.SetupGet(req => req.Headers).Returns(new NameValueCollection());

    return context.Object;
}

然后在单元测试中使用它,我在Test Init方法中调用它

HttpContextManager.SetCurrentContext(GetMockedHttpContext());

然后,您可以在上面的方法中添加来自Session的预期结果,您希望它可以用于您的web服务。