gameauthapi/GameAuthApi.Tests/UserControllerTests.cs

using GameAuthApi.Controllers;
using GameAuthApi.Models;
using GameAuthApi.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;

public class UserControllerTests
{
    [Fact]
    public async Task GetAllUsers_ReturnsOk()
    {
        var users = new List<User>{ new User{ Username="u" } };
        var config = new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string,string>
            {
                {"MongoDB:ConnectionString","mongodb://localhost"},
                {"MongoDB:DatabaseName","test"}
            }).Build();
        var mockService = new Mock<UserService>(config);
        mockService.Setup(s => s.GetAllAsync()).ReturnsAsync(users);
        var controller = new UserController(mockService.Object);

        var result = await controller.GetAllUsers();

        var ok = Assert.IsType<OkObjectResult>(result);
        Assert.Equal(users, ok.Value);
    }

    [Fact]
    public async Task DeleteUser_NotFound()
    {
        var config = new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string,string>
            {
                {"MongoDB:ConnectionString","mongodb://localhost"},
                {"MongoDB:DatabaseName","test"}
            }).Build();
        var mockService = new Mock<UserService>(config);
        mockService.Setup(s => s.DeleteAsync("no")).ReturnsAsync(false);
        var controller = new UserController(mockService.Object);

        var result = await controller.DeleteUser("no");

        Assert.IsType<NotFoundObjectResult>(result);
    }

    [Fact]
    public async Task UpdateUser_NotFound()
    {
        var config = new ConfigurationBuilder()
            .AddInMemoryCollection(new Dictionary<string,string>
            {
                {"MongoDB:ConnectionString","mongodb://localhost"},
                {"MongoDB:DatabaseName","test"}
            }).Build();
        var mockService = new Mock<UserService>(config);
        mockService.Setup(s => s.GetByUsernameAsync("no")).ReturnsAsync((User)null);
        var controller = new UserController(mockService.Object);

        var result = await controller.UpdateUser("no", new UpdateUserRequest { Email="e", Role="USER" });

        Assert.IsType<NotFoundObjectResult>(result);
    }
}