feat: improvements in structures

domain/usecase/user/interface.go

@@ -0,0 +1,15 @@
+package user
+
+import (
+	"github.com/eminetto/clean-architecture-go-v2/domain/entity"
+)
+
+//UseCase interface
+type UseCase interface {
+	GetUser(id entity.ID) (*entity.User, error)
+	SearchUsers(query string) ([]*entity.User, error)
+	ListUsers() ([]*entity.User, error)
+	CreateUser(e *entity.User) (entity.ID, error)
+	UpdateUser(e *entity.User) error
+	DeleteUser(id entity.ID) error
+}

domain/usecase/user/mock/user.go

@@ -0,0 +1,123 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: domain/usecase/user/interface.go
+
+// Package mock is a generated GoMock package.
+package mock
+
+import (
+	reflect "reflect"
+
+	entity "github.com/eminetto/clean-architecture-go-v2/domain/entity"
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockUseCase is a mock of UseCase interface
+type MockUseCase struct {
+	ctrl     *gomock.Controller
+	recorder *MockUseCaseMockRecorder
+}
+
+// MockUseCaseMockRecorder is the mock recorder for MockUseCase
+type MockUseCaseMockRecorder struct {
+	mock *MockUseCase
+}
+
+// NewMockUseCase creates a new mock instance
+func NewMockUseCase(ctrl *gomock.Controller) *MockUseCase {
+	mock := &MockUseCase{ctrl: ctrl}
+	mock.recorder = &MockUseCaseMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use
+func (m *MockUseCase) EXPECT() *MockUseCaseMockRecorder {
+	return m.recorder
+}
+
+// GetUser mocks base method
+func (m *MockUseCase) GetUser(id entity.ID) (*entity.User, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetUser", id)
+	ret0, _ := ret[0].(*entity.User)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetUser indicates an expected call of GetUser
+func (mr *MockUseCaseMockRecorder) GetUser(id interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetUser", reflect.TypeOf((*MockUseCase)(nil).GetUser), id)
+}
+
+// SearchUsers mocks base method
+func (m *MockUseCase) SearchUsers(query string) ([]*entity.User, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SearchUsers", query)
+	ret0, _ := ret[0].([]*entity.User)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// SearchUsers indicates an expected call of SearchUsers
+func (mr *MockUseCaseMockRecorder) SearchUsers(query interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SearchUsers", reflect.TypeOf((*MockUseCase)(nil).SearchUsers), query)
+}
+
+// ListUsers mocks base method
+func (m *MockUseCase) ListUsers() ([]*entity.User, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ListUsers")
+	ret0, _ := ret[0].([]*entity.User)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// ListUsers indicates an expected call of ListUsers
+func (mr *MockUseCaseMockRecorder) ListUsers() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ListUsers", reflect.TypeOf((*MockUseCase)(nil).ListUsers))
+}
+
+// CreateUser mocks base method
+func (m *MockUseCase) CreateUser(e *entity.User) (entity.ID, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "CreateUser", e)
+	ret0, _ := ret[0].(entity.ID)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// CreateUser indicates an expected call of CreateUser
+func (mr *MockUseCaseMockRecorder) CreateUser(e interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "CreateUser", reflect.TypeOf((*MockUseCase)(nil).CreateUser), e)
+}
+
+// UpdateUser mocks base method
+func (m *MockUseCase) UpdateUser(e *entity.User) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "UpdateUser", e)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// UpdateUser indicates an expected call of UpdateUser
+func (mr *MockUseCaseMockRecorder) UpdateUser(e interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "UpdateUser", reflect.TypeOf((*MockUseCase)(nil).UpdateUser), e)
+}
+
+// DeleteUser mocks base method
+func (m *MockUseCase) DeleteUser(id entity.ID) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "DeleteUser", id)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// DeleteUser indicates an expected call of DeleteUser
+func (mr *MockUseCaseMockRecorder) DeleteUser(id interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DeleteUser", reflect.TypeOf((*MockUseCase)(nil).DeleteUser), id)
+}

domain/usecase/user/service.go

@@ -0,0 +1,76 @@
+package user
+
+import (
+	"strings"
+	"time"
+
+	repo "github.com/eminetto/clean-architecture-go-v2/domain/repository/user"
+
+	"github.com/eminetto/clean-architecture-go-v2/domain"
+
+	"github.com/eminetto/clean-architecture-go-v2/pkg/password"
+
+	"github.com/eminetto/clean-architecture-go-v2/domain/entity"
+)
+
+//Service  interface
+type Service struct {
+	repo repo.Repository
+	pwd  password.Service
+}
+
+//NewService create new use case
+func NewService(r repo.Repository, pwd password.Service) *Service {
+	return &Service{
+		repo: r,
+		pwd:  pwd,
+	}
+}
+
+//Create an user
+func (s *Service) CreateUser(e *entity.User) (entity.ID, error) {
+	e.ID = entity.NewID()
+	e.CreatedAt = time.Now()
+	pwd, err := s.pwd.Generate(e.Password)
+	if err != nil {
+		return e.ID, err
+	}
+	e.Password = pwd
+	return s.repo.Create(e)
+}
+
+//Get an user
+func (s *Service) GetUser(id entity.ID) (*entity.User, error) {
+	return s.repo.Get(id)
+}
+
+//Search users
+func (s *Service) SearchUsers(query string) ([]*entity.User, error) {
+	return s.repo.Search(strings.ToLower(query))
+}
+
+//List users
+func (s *Service) ListUsers() ([]*entity.User, error) {
+	return s.repo.List()
+}
+
+//Delete an user
+func (s *Service) DeleteUser(id entity.ID) error {
+	u, err := s.GetUser(id)
+	if u == nil {
+		return domain.ErrNotFound
+	}
+	if err != nil {
+		return err
+	}
+	if len(u.Books) > 0 {
+		return domain.ErrCannotBeDeleted
+	}
+	return s.repo.Delete(id)
+}
+
+//Update an user
+func (s *Service) UpdateUser(e *entity.User) error {
+	e.UpdatedAt = time.Now()
+	return s.repo.Update(e)
+}

domain/usecase/user/service_test.go

@@ -0,0 +1,97 @@
+package user
+
+import (
+	"testing"
+
+	"github.com/eminetto/clean-architecture-go-v2/domain/repository/user"
+
+	"github.com/eminetto/clean-architecture-go-v2/pkg/password"
+
+	"github.com/eminetto/clean-architecture-go-v2/domain"
+	"github.com/eminetto/clean-architecture-go-v2/domain/entity"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_Create(t *testing.T) {
+	repo := user.NewInmemRepository()
+	m := NewService(repo, password.NewFakeService())
+	u := entity.NewFixtureUser()
+	id, err := m.CreateUser(u)
+	assert.Nil(t, err)
+	assert.Equal(t, u.ID, id)
+	assert.False(t, u.CreatedAt.IsZero())
+	assert.True(t, u.UpdatedAt.IsZero())
+}
+
+func Test_SearchAndFind(t *testing.T) {
+	repo := user.NewInmemRepository()
+	m := NewService(repo, password.NewFakeService())
+	u1 := entity.NewFixtureUser()
+	u2 := entity.NewFixtureUser()
+	u2.FirstName = "Lemmy"
+
+	uID, _ := m.CreateUser(u1)
+	_, _ = m.CreateUser(u2)
+
+	t.Run("search", func(t *testing.T) {
+		c, err := m.SearchUsers("ozzy")
+		assert.Nil(t, err)
+		assert.Equal(t, 1, len(c))
+		assert.Equal(t, "Osbourne", c[0].LastName)
+
+		c, err = m.SearchUsers("dio")
+		assert.Equal(t, domain.ErrNotFound, err)
+		assert.Nil(t, c)
+	})
+	t.Run("list all", func(t *testing.T) {
+		all, err := m.ListUsers()
+		assert.Nil(t, err)
+		assert.Equal(t, 2, len(all))
+	})
+
+	t.Run("get", func(t *testing.T) {
+		saved, err := m.GetUser(uID)
+		assert.Nil(t, err)
+		assert.Equal(t, u1.FirstName, saved.FirstName)
+	})
+}
+
+func Test_Update(t *testing.T) {
+	repo := user.NewInmemRepository()
+	m := NewService(repo, password.NewFakeService())
+	u := entity.NewFixtureUser()
+	id, err := m.CreateUser(u)
+	assert.Nil(t, err)
+	saved, _ := m.GetUser(id)
+	saved.FirstName = "Dio"
+	saved.Books = append(saved.Books, entity.NewID())
+	assert.Nil(t, m.UpdateUser(saved))
+	updated, err := m.GetUser(id)
+	assert.Nil(t, err)
+	assert.Equal(t, "Dio", updated.FirstName)
+	assert.False(t, u.UpdatedAt.IsZero())
+	assert.Equal(t, 1, len(updated.Books))
+}
+
+func TestDelete(t *testing.T) {
+	repo := user.NewInmemRepository()
+	m := NewService(repo, password.NewFakeService())
+	u1 := entity.NewFixtureUser()
+	u2 := entity.NewFixtureUser()
+	u2ID, _ := m.CreateUser(u2)
+
+	err := m.DeleteUser(u1.ID)
+	assert.Equal(t, domain.ErrNotFound, err)
+
+	err = m.DeleteUser(u2ID)
+	assert.Nil(t, err)
+	_, err = m.GetUser(u2ID)
+	assert.Equal(t, domain.ErrNotFound, err)
+
+	u3 := entity.NewFixtureUser()
+	u3.Books = []entity.ID{entity.NewID()}
+	_, _ = m.CreateUser(u3)
+	err = m.DeleteUser(u3.ID)
+	assert.Equal(t, domain.ErrCannotBeDeleted, err)
+}