如何对HttpContext.SignInAsync（）进行单元测试？ [英] How to unit test HttpContext.SignInAsync()?

问题描述

SignInAsync（）源代码

我在单元测试中遇到了一些问题。

I ran into some problems with unit testing.

1. DefaultHttpContext.RequestServices 为空


2. 我尝试创建 AuthenticationService 对象，但我不知道要传递什么参数

1. DefaultHttpContext.RequestServices is null
2. I tried to create the AuthenticationService object, but I do not know what parameters to pass

我该怎么办？如何对 HttpContext.SignInAsync（）进行单元测试？

What should I do? How to unit test HttpContext.SignInAsync()?

被测方法

public async Task<IActionResult> Login(LoginViewModel vm, [FromQuery]string returnUrl)
{
    if (ModelState.IsValid)
    {
        var user = await context.Users.FirstOrDefaultAsync(u => u.UserName == vm.UserName && u.Password == vm.Password);
        if (user != null)
        {
            var claims = new List<Claim>
            {
                new Claim(ClaimTypes.Name, user.UserName)
            };
            var identity = new ClaimsIdentity(claims, "HappyDog");

            // here
            await HttpContext.SignInAsync(new ClaimsPrincipal(identity));
            return Redirect(returnUrl ?? Url.Action("Index", "Goods"));
        }
    }
    return View(vm);
}

到目前为止我一直在尝试。

What I have tried so far.

[TestMethod]
public async Task LoginTest()
{
    using (var context = new HappyDogContext(_happyDogOptions))
    {
        await context.Users.AddAsync(new User { Id = 1, UserName = "test", Password = "password", FacePicture = "FacePicture" });
        await context.SaveChangesAsync();

        var controller = new UserController(svc, null)
        {
            ControllerContext = new ControllerContext
            {
                HttpContext = new DefaultHttpContext
                {
                    // How mock RequestServices?
                    // RequestServices = new AuthenticationService()?
                }
            }
        };
        var vm = new LoginViewModel { UserName = "test", Password = "password" };
        var result = await controller.Login(vm, null) as RedirectResult;
        Assert.AreEqual("/Goods", result.Url);
    }
}

推荐答案

HttpContext.SignInAsync 是使用 RequestServices 的扩展方法，这是 IServiceProvider 。那是您必须嘲笑的东西。

HttpContext.SignInAsync is an extension method that uses RequestServices, which is IServiceProvider. That is what you must mock.

context.RequestServices
    .GetRequiredService<IAuthenticationService>()
    .SignInAsync(context, scheme, principal, properties);

您可以通过创建派生自使用接口的类来手动创建假/模拟文件，也可以使用诸如 Moq

You can either create a fake/mock manually by creating classes that derive from the used interfaces or use a mocking framework like Moq

//...code removed for brevity

var authServiceMock = new Mock<IAuthenticationService>();
authServiceMock
    .Setup(_ => _.SignInAsync(It.IsAny<HttpContext>(), It.IsAny<string>(), It.IsAny<ClaimsPrincipal>(), It.IsAny<AuthenticationProperties>()))
    .Returns(Task.FromResult((object)null));

var serviceProviderMock = new Mock<IServiceProvider>();
serviceProviderMock
    .Setup(_ => _.GetService(typeof(IAuthenticationService)))
    .Returns(authServiceMock.Object);

var controller = new UserController(svc, null) {
    ControllerContext = new ControllerContext {
        HttpContext = new DefaultHttpContext {
            // How mock RequestServices?
            RequestServices = serviceProviderMock.Object
        }
    }
};

//...code removed for brevity

轻松嘲笑 HttpContext 以及其他依赖项。

You could just as easily mocked the HttpContext as well like the other dependencies.

您可以在此处阅读如何使用Moq他们的快速入门

You can read up on how to use Moq here at their Quick start

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