如何模拟 httpcontext 使其在单元测试中不为 null？

我正在编写一个单元测试，控制器方法抛出异常，因为 HttpContext / ControllerContext 为 null。我不需要断言 HttpContext 中的任何内容，只需要它不为 NULL 即可。我做了研究，我相信最小起订量就是答案。但我见过的所有样本并没有给我带来多大帮助。我不需要做任何花哨的事情，只需模拟 httpcontext 即可。给我指明正确的方向！

从以下位置得到这两个函数here在课堂上；

public static class HttpContextFactory
    {
        public static void SetFakeAuthenticatedControllerContext(this Controller controller)
        {

            var httpContext = FakeAuthenticatedHttpContext();
            ControllerContext context =
            new ControllerContext(
            new RequestContext(httpContext,
            new RouteData()), controller);
            controller.ControllerContext = context;

        }


        private static HttpContextBase FakeAuthenticatedHttpContext()
        {
            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>();

            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("a.ali174");

            return context.Object;
        }


    }

从单元测试中我这样称呼它们；

 HttpContextFactory.SetFakeAuthenticatedControllerContext(controller);

确保你有Moq安装在您的测试项目中：

Install-Package Moq