User Service API Project Overview Architecture & Implementation Core Components Domain: User entity with UUID and Name Ports: Repository interface definitions Service: Business logic implementation Tests: Mock-based testing with testify Code Structure // Domain type User struct { ID string Name string } // Ports type UserRepository interface { Save(user User) error Get(id string) (User, error) } // Service type UserService struct { repo UserRepository } func (s *UserService) CreateUser(name string) (User, error) func (s *UserService) GetUser(id string) (User, error) // Mock Repository type MockUserRepository struct { mock.Mock } // Test Cases func TestUserService_CreateUser(t *testing.T) func TestUserService_GetUser(t *testing.T)