我需要一个用于单元测试的HttpContext模拟对象，但我遇到了困难。
我正在编写一个使用SessionIdManager以编程方式更改sessionId的方法。而SessionIdManager需要HttpContext而不是HttpContextBase。
但是我找不到任何关于如何创建HttpContext模拟对象的示例。所有现有的示例仅适用于创建HttpContextBase。
我尝试过以下方法，但它们都没有奏效。
HttpContext httpContext = Mock<HttpContext>();
HttpContext httpContext = (HttpContext)GetMockHttpContextBase();
public HttpContextBase GetMockHttpContextBase()
{
var context = new Mock<HttpContextBase>();
var request = new Mock<HttpRequestBase>();
var response = new Mock<HttpResponseBase>();
var session = new Mock<HttpSessionStateBase>();
var application = new Mock<HttpApplication>();
var httpContext = new Mock<HttpContext>();
var server = new Mock<HttpServerUtilityBase>();
var user = new Mock<IPrincipal>();
var identity = new Mock<IIdentity>();
var urlHelper = new Mock<UrlHelper>();
var routes = new RouteCollection();
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);
application.Setup(x => x.Context).Returns(httpContext.Object);
context.Setup(ctx => ctx.ApplicationInstance).Returns(application.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://tempuri.org"));
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;
}