如何模拟Asp.net身份UserManager的CreateAsync方法

Question

我试图模拟UserStore的CreateAsync方法来拥有一个内存中的用户存储.

public void Can_Create_User()
{
    //Arrange
    var dummyUser = new ApplicationUser() { UserName = "PinkWarrior", Email = "PinkWarrior@PinkWarrior.com" };
    var mockStore = new Mock<IUserStore<ApplicationUser>>();

    var userManager = new UserManager<ApplicationUser>(mockStore.Object);
    mockStore.Setup(x => x.CreateAsync(dummyUser))
                .Returns(Task.FromResult(IdentityResult.Success));


    //Act
    Task<IdentityResult> tt = (Task<IdentityResult>)mockStore.Object.CreateAsync(dummyUser);
    var user = userManager.FindByName("PinkWarrior");

    //Assert
    Assert.AreEqual("PinkWarrior", user.UserName);
}

在user上面总是空的,因为我从来没有插入.所以我遇到的问题是如何使userManager(不是模拟器)从我的模拟商店返回用户？

这个答案有些相似,但在这里没有回答我的问题.

任何帮助非常感谢

Answer 1

您需要模拟对FindByNameAsync的调用,因为这是UserManager将调用的:

public void Can_Create_User()
{
    //Arrange
    var dummyUser = new ApplicationUser() { UserName = "PinkWarrior", Email = "PinkWarrior@PinkWarrior.com" };
    var mockStore = new Mock<IUserStore<ApplicationUser>>();

    var userManager = new UserManager<ApplicationUser>(mockStore.Object);
    mockStore.Setup(x => x.CreateAsync(dummyUser))
                .Returns(Task.FromResult(IdentityResult.Success));

    mockStore.Setup(x => x.FindByNameAsync(dummyUser.UserName))
                .Returns(Task.FromResult(dummyUser));


    //Act
    Task<IdentityResult> tt = (Task<IdentityResult>)mockStore.Object.CreateAsync(dummyUser);
    var user = userManager.FindByName("PinkWarrior");

    //Assert
    Assert.AreEqual("PinkWarrior", user.UserName);
}

但是,我相信通过这样的测试,您正在测试Microsoft.AspNet.Identity.UserManager而不是您的代码.你所证明的是UserManager以某种方式调用你的mockStore.

Microsoft.AspNet.Identity的源代码包含这些类型的测试.

Answer 2

MockHelper.cs从Identitygit repo中的测试检查类

身份GitHub回购链接或用于模拟的已解决问题

您应该在那里找到有关模拟的灵感，例如

  public static UserManager<TUser> TestUserManager<TUser>(IUserStore<TUser> store = null) where TUser : class
    {
        store = store ?? new Mock<IUserStore<TUser>>().Object;
        var options = new Mock<IOptions<IdentityOptions>>();
        var idOptions = new IdentityOptions();
        idOptions.Lockout.AllowedForNewUsers = false;
        options.Setup(o => o.Value).Returns(idOptions);
        var userValidators = new List<IUserValidator<TUser>>();
        var validator = new Mock<IUserValidator<TUser>>();
        userValidators.Add(validator.Object);
        var pwdValidators = new List<PasswordValidator<TUser>>();
        pwdValidators.Add(new PasswordValidator<TUser>());
        var userManager = new UserManager<TUser>(store, options.Object, new PasswordHasher<TUser>(),
            userValidators, pwdValidators, new UpperInvariantLookupNormalizer(),
            new IdentityErrorDescriber(), null,
            new Mock<ILogger<UserManager<TUser>>>().Object,
            null);
        validator.Setup(v => v.ValidateAsync(userManager, It.IsAny<TUser>()))
            .Returns(Task.FromResult(IdentityResult.Success)).Verifiable();
        return userManager;
    }

我用这种方法使用它：

       private UserController BuildCoontrollerWithDatabase()
    {
        DbContextOptionsBuilder dbContextOptionsBuilder = new DbContextOptionsBuilder();
        dbContextOptionsBuilder.UseInMemoryDatabase();

        ApplicationDbContext applicationDbContext = new ApplicationDbContext( dbContextOptionsBuilder.Options);

        var userStore = new UserStore<ApplicationUser>(applicationDbContext);

        UserManager<ApplicationUser>  userManager = TestUserManager<ApplicationUser>(userStore);

        return new UserController(userManager);


    }