Add user avatar and profile feature, consolidate Auth and UserManagement features (#257)

web/backend/Features/Features.Users.Tests/Queries/GetUserByIdHandlerTests.cs

@@ -0,0 +1,45 @@
+using Domain.Entities;
+using Domain.Exceptions;
+using Features.Auth.Queries.GetUserById;
+using Features.Auth.Repository;
+using FluentAssertions;
+using Moq;
+
+namespace Features.Auth.Tests.Queries;
+
+public class GetUserByIdHandlerTests
+{
+    private readonly GetUserByIdHandler _handler;
+    private readonly Mock<IUserListRepository> _repoMock = new();
+
+    public GetUserByIdHandlerTests()
+    {
+        _handler = new GetUserByIdHandler(_repoMock.Object);
+    }
+
+    [Fact]
+    public async Task Handle_ReturnsUser_WhenFound()
+    {
+        UserAccount user = new() { UserAccountId = Guid.NewGuid(), Username = "test" };
+        _repoMock.Setup(r => r.GetByIdAsync(user.UserAccountId)).ReturnsAsync(user);
+
+        UserAccount result = await _handler.Handle(
+            new GetUserByIdQuery(user.UserAccountId),
+            CancellationToken.None
+        );
+
+        result.Should().Be(user);
+    }
+
+    [Fact]
+    public async Task Handle_Throws_WhenNotFound()
+    {
+        Guid id = Guid.NewGuid();
+        _repoMock.Setup(r => r.GetByIdAsync(id)).ReturnsAsync((UserAccount?)null);
+
+        Func<Task<UserAccount>> act = async () =>
+            await _handler.Handle(new GetUserByIdQuery(id), CancellationToken.None);
+
+        await act.Should().ThrowAsync<NotFoundException>();
+    }
+}