如何在NUnit测试用例中使用HttpContext AuthenticateAsync方法？

using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Http;
using Moq;
using NUnit.Framework;
using System.Security.Claims;
using System.Threading.Tasks;

[TestFixture]
public class MyTestClass
{
    [Test]
    public async Task MyTestMethod()
    {
        // 创建一个模拟的HttpContext对象
        var httpContextMock = new Mock<HttpContext>();

        // 创建一个模拟的AuthenticationScheme对象
        var authenticationScheme = new AuthenticationScheme("TestScheme", "TestDisplayName", typeof(TestHandler));

        // 创建一个模拟的ClaimsPrincipal对象
        var claimsPrincipal = new ClaimsPrincipal(new ClaimsIdentity(new Claim[] { new Claim(ClaimTypes.Name, "TestUser") }, authenticationScheme.Name));

        // 设置HttpContext的User属性为模拟的ClaimsPrincipal对象
        httpContextMock.SetupGet(c => c.User).Returns(claimsPrincipal);

        // 创建一个模拟的AuthenticationHandler对象
        var authenticationHandlerMock = new Mock<AuthenticationHandler<TestOptions>>();

        // 设置AuthenticationHandler的AuthenticateAsync方法返回模拟的AuthenticateResult对象
        authenticationHandlerMock
            .Setup(h => h.AuthenticateAsync())
            .ReturnsAsync(AuthenticateResult.Success(new AuthenticationTicket(claimsPrincipal, authenticationScheme.Name)));

        // 创建一个模拟的AuthenticationSchemeProvider对象
        var authenticationSchemeProviderMock = new Mock<IAuthenticationSchemeProvider>();

        // 设置AuthenticationSchemeProvider的GetSchemeAsync方法返回模拟的AuthenticationScheme对象
        authenticationSchemeProviderMock
            .Setup(p => p.GetSchemeAsync(authenticationScheme.Name))
            .ReturnsAsync(authenticationScheme);

        // 创建一个模拟的HttpContextAccessor对象
        var httpContextAccessorMock = new Mock<IHttpContextAccessor>();

        // 设置HttpContextAccessor的HttpContext属性为模拟的HttpContext对象
        httpContextAccessorMock.SetupGet(a => a.HttpContext).Returns(httpContextMock.Object);

        // 创建被测试的类的实例，将模拟的对象传入构造函数
        var myClass = new MyClass(authenticationHandlerMock.Object, authenticationSchemeProviderMock.Object, httpContextAccessorMock.Object);

        // 调用被测试的方法
        var result = await myClass.MyMethod();

        // 断言结果是否符合预期
        Assert.AreEqual("TestUser", result);
    }
}

// 被测试的类
public class MyClass
{
    private readonly AuthenticationHandler<TestOptions> _authenticationHandler;
    private readonly IAuthenticationSchemeProvider _authenticationSchemeProvider;
    private readonly IHttpContextAccessor _httpContextAccessor;

    public MyClass(AuthenticationHandler<TestOptions> authenticationHandler, IAuthenticationSchemeProvider authenticationSchemeProvider, IHttpContextAccessor httpContextAccessor)
    {
        _authenticationHandler = authenticationHandler;
        _authenticationSchemeProvider = authenticationSchemeProvider;
        _httpContextAccessor = httpContextAccessor;
    }

    public async Task<string> MyMethod()
    {
        // 获取HttpContext对象
        var httpContext = _httpContextAccessor.HttpContext;

        // 获取AuthenticationScheme对象
        var authenticationScheme = await _authenticationSchemeProvider.GetSchemeAsync("TestScheme");

        // 使用AuthenticationHandler的AuthenticateAsync方法进行身份验证
        var result = await _authenticationHandler.AuthenticateAsync(httpContext, authenticationScheme.Name);

        // 获取用户信息
        var user = result.Principal.Identity.Name;

        return user;
    }
}

// 自定义的AuthenticationHandler和TestOptions类，用于模拟身份验证过程
public class TestHandler : AuthenticationHandler<TestOptions>
{
    public TestHandler(IOptionsMonitor<TestOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock)
        : base(options, logger, encoder, clock)
    {
    }

    protected override Task<AuthenticateResult> HandleAuthenticateAsync()
    {
        return Task.FromResult(AuthenticateResult.NoResult());
    }
}

public class TestOptions : AuthenticationSchemeOptions
{
}