如何在Asp.Net MVC4中模拟HttpContext.User.Identity.Name_如何在ASP.NET WebApi中模拟类？_如何在ASP.NET MVC中模拟模型？ - 腾讯云开发者社区

如何在Asp.Net MVC4中模拟HttpContext.User.Identity.Name

在ASP.NET MVC 4中模拟HttpContext.User.Identity.Name通常是为了在测试环境中进行单元测试或集成测试，而不需要实际的HTTP请求。HttpContext.User.Identity.Name表示当前登录用户的用户名。

基础概念

HttpContext对象封装了与HTTP请求相关的信息，包括请求、响应、会话状态和用户身份验证信息。User.Identity属性提供了对当前请求的用户身份验证信息的访问，而Name属性则返回当前登录用户的用户名。

模拟方法

在ASP.NET MVC 4中，可以通过以下几种方法模拟HttpContext.User.Identity.Name：

1. 使用Moq库

Moq是一个流行的.NET模拟框架，可以用来创建HttpContext的模拟对象。

using Moq;
using System.Web;

public class MockHttpContext
{
    public static HttpContextBase CreateMockHttpContext(string username)
    {
        var mockIdentity = new Mock<IIdentity>();
        mockIdentity.SetupGet(x => x.Name).Returns(username);

        var mockPrincipal = new Mock<IPrincipal>();
        mockPrincipal.SetupGet(x => x.Identity).Returns(mockIdentity.Object);

        var mockHttpContext = new Mock<HttpContextBase>();
        mockHttpContext.SetupGet(x => x.User).Returns(mockPrincipal.Object);

        return mockHttpContext.Object;
    }
}

在测试中使用：

[TestClass]
public class UserControllerTests
{
    [TestMethod]
    public void TestGetUserName()
    {
        var mockHttpContext = MockHttpContext.CreateMockHttpContext("testUser");
        var controller = new UserController();
        controller.ControllerContext = new ControllerContext(mockHttpContext, new RouteData(), controller);

        var result = controller.GetUserName();

        Assert.AreEqual("testUser", result);
    }
}

2. 使用HttpContextWrapper

HttpContextWrapper是一个简单的包装器，可以用来替换HttpContext对象。

using System.Web;

public class HttpContextWrapper : HttpContextBase
{
    private readonly HttpContext _httpContext;

    public HttpContextWrapper(HttpContext httpContext)
    {
        _httpContext = httpContext;
    }

    public override IPrincipal User
    {
        get { return _httpContext.User; }
    }
}

在测试中使用：

[TestClass]
public class UserControllerTests
{
    [TestMethod]
    public void TestGetUserName()
    {
        var httpContext = new HttpContext(new HttpRequest("", "http://tempuri.org", ""), new HttpResponse(new StringWriter()));
        httpContext.User = new GenericPrincipal(new GenericIdentity("testUser"), new string[0]);

        var controller = new UserController();
        controller.ControllerContext = new ControllerContext(new HttpContextWrapper(httpContext), new RouteData(), controller);

        var result = controller.GetUserName();

        Assert.AreEqual("testUser", result);
    }
}