user

type CreateRequest ¶

type CreateRequest struct {
	Name  string
	Email string
	Role  string
}

type FakeRepository ¶

type FakeRepository struct {
	// contains filtered or unexported fields
}

FakeRepository is the in-memory repository for simulation. It accepts a *dstsim.Injector so faults are deterministic.

func NewFakeRepository(injector *dstsim.Injector) *FakeRepository

func (r *FakeRepository) Create(ctx context.Context, req CreateRequest) (*User, error)

func (r *FakeRepository) Delete(ctx context.Context, id int64) error

func (r *FakeRepository) FindAll(ctx context.Context, limit int) ([]User, error)

func (r *FakeRepository) FindByEmail(ctx context.Context, email string) (*User, error)

func (r *FakeRepository) FindByID(ctx context.Context, id int64) (*User, error)

func (r *FakeRepository) Snapshot() map[int64]User

func (r *FakeRepository) Update(ctx context.Context, id int64, req UpdateRequest) (*User, error)

type Repository ¶

type Repository interface {
	FindAll(ctx context.Context, limit int) ([]User, error)
	FindByID(ctx context.Context, id int64) (*User, error)
	FindByEmail(ctx context.Context, email string) (*User, error)
	Create(ctx context.Context, req CreateRequest) (*User, error)
	Update(ctx context.Context, id int64, req UpdateRequest) (*User, error)
	Delete(ctx context.Context, id int64) error
}

Repository is the interface the Service depends on. The real implementation talks to Postgres. The fake implementation uses an in-memory map.

type Service ¶

type Service struct {
	// contains filtered or unexported fields
}

Service contains the business logic for the user domain. It depends on Repository — never on a concrete implementation. This is the code that DST exercises.

func NewService(repo Repository) *Service

func (s *Service) Create(ctx context.Context, req CreateRequest) (*User, error)

func (s *Service) Delete(ctx context.Context, id int64) error

func (s *Service) GetAll(ctx context.Context) ([]User, error)

func (s *Service) GetByID(ctx context.Context, id int64) (*User, error)

func (s *Service) Update(ctx context.Context, id int64, req UpdateRequest) (*User, error)

type UpdateRequest ¶

type UpdateRequest struct {
	Name  string
	Email string
	Role  string
}

type User ¶

type User struct {
	ID        int64
	Name      string
	Email     string
	Role      string
	CreatedAt time.Time
	UpdatedAt time.Time
}