Question

我正在尝试使用webgrid对控制器进行单元测试

var grid = new WebGrid(ajaxUpdateContainerId: "container-grid",ajaxUpdateCallback: "setArrows",  canSort: true);

我总是收到此错误

System.ArgumentNullException: Value cannot be null.
Parameter name: httpContext

这是我的测试方法

    var mockContext = CreateMockContext();
    UserController target = new UserController();
    target.ControllerContext = new ControllerContext();
    target.ControllerContext.HttpContext = mockContext.Http.Object;
    Nullable<int> page = new Nullable<int>();
    string sort = "CreatedDate";
    string sortdir = "ASC";
    ActionResult actual;
    actual = target.Payments(page, sort, sortdir);
    Assert.IsNotNull(actual);

这是我的CreateMockContext方法

public UnitTestBase CreateMockContext()
        {
            this.RoutingRequestContext = new Mock<RequestContext>(MockBehavior.Loose);
            this.ActionExecuting = new Mock<ActionExecutingContext>(MockBehavior.Loose);
            this.Http = new Mock<HttpContextBase>(MockBehavior.Loose);
            this.Server = new Mock<HttpServerUtilityBase>(MockBehavior.Loose);
            this.Response = new Mock<HttpResponseBase>(MockBehavior.Loose);
            this.Request = new Mock<HttpRequestBase>(MockBehavior.Loose);
            this.Session = new Mock<HttpSessionStateBase>(MockBehavior.Loose);
            this.Cookies = new HttpCookieCollection();

            this.RoutingRequestContext.SetupGet(c => c.HttpContext).Returns(this.Http.Object);
            this.ActionExecuting.SetupGet(c => c.HttpContext).Returns(this.Http.Object);
            this.Http.SetupGet(c => c.Request).Returns(this.Request.Object);
            this.Http.SetupGet(c => c.Response).Returns(this.Response.Object);
            this.Http.SetupGet(c => c.Server).Returns(this.Server.Object);
            this.Http.SetupGet(c => c.Session).Returns(this.Session.Object);
            this.Http.SetupGet(p => p.User.Identity.Name).Returns("admin");
            this.Http.SetupGet(p => p.Request.IsAuthenticated).Returns(true);
            this.Request.Setup(c => c.Cookies).Returns(Cookies);
            return this;
        }

我可以测试其他控制器就好了。只有带webgrid的控制器失败。请帮忙。

Answer 1

您是否有理由在控制器中实例化WebGrid？似乎基于this MSDN article，您可以将WebGrid实例化移动到控制器的视图中，并从其逻辑中删除该依赖项。这肯定会使编写单元测试变得更加容易。

尝试使用webgrid对Controller进行单元测试时，HttpContext为null

1 个答案: