user service
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113
internal/user/service/service.go
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113
internal/user/service/service.go
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package service
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import (
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"context"
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"errors"
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"log/slog"
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"gitea.michaelthomson.dev/mthomson/habits/internal/user/repository"
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"github.com/gofrs/uuid/v5"
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)
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var (
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ErrNotFound error = errors.New("user cannot be found")
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)
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type User struct {
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Id uuid.UUID
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Email string
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HashedPassword string
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}
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func NewUser(id uuid.UUID, email string, hashedPassword string) User {
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return User{Id: id, Email: email, HashedPassword: hashedPassword}
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}
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func UserFromUserRow(userRow repository.UserRow) User {
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return User{Id: userRow.Id, Email: userRow.Email, HashedPassword: userRow.HashedPassword}
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}
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func UserRowFromUser(user User) repository.UserRow {
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return repository.UserRow{Id: user.Id, Email: user.Email, HashedPassword: user.HashedPassword}
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}
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func (t User) Equal(user User) bool {
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return t.Id == user.Id && t.Email == user.Email && t.HashedPassword == user.HashedPassword
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}
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type UserRepository interface {
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Create(ctx context.Context, user repository.UserRow) (repository.UserRow, error)
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GetById(ctx context.Context, id uuid.UUID) (repository.UserRow, error)
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Update(ctx context.Context, user repository.UserRow) error
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Delete(ctx context.Context, id uuid.UUID) error
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}
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type UserService struct {
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logger *slog.Logger
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repo UserRepository
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}
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func NewUserService(logger *slog.Logger, userRepo UserRepository) *UserService {
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return &UserService{
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logger: logger,
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repo: userRepo,
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}
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}
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func (s *UserService) GetUser(ctx context.Context, id uuid.UUID) (User, error) {
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user, err := s.repo.GetById(ctx, id)
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if err != nil {
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if err == repository.ErrNotFound {
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return User{}, ErrNotFound
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}
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s.logger.ErrorContext(ctx, err.Error())
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return User{}, err
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}
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return UserFromUserRow(user), err
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}
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func (s *UserService) CreateUser(ctx context.Context, user User) (User, error) {
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userRow := UserRowFromUser(user)
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newUserRow, err := s.repo.Create(ctx, userRow)
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if err != nil {
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s.logger.ErrorContext(ctx, err.Error())
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return User{}, err
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}
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return UserFromUserRow(newUserRow), err
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}
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func (s *UserService) DeleteUser(ctx context.Context, id uuid.UUID) error {
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err := s.repo.Delete(ctx, id)
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if err == repository.ErrNotFound {
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return ErrNotFound
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}
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if err != nil {
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s.logger.ErrorContext(ctx, err.Error())
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}
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return err
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}
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func (s *UserService) UpdateUser(ctx context.Context, user User) error {
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userRow := UserRowFromUser(user)
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err := s.repo.Update(ctx, userRow)
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if err == repository.ErrNotFound {
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return ErrNotFound
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}
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if err != nil {
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s.logger.ErrorContext(ctx, err.Error())
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}
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return err
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}
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155
internal/user/service/service_test.go
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155
internal/user/service/service_test.go
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package service_test
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import (
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"context"
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"log/slog"
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"testing"
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"gitea.michaelthomson.dev/mthomson/habits/internal/test"
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"gitea.michaelthomson.dev/mthomson/habits/internal/user/repository"
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"gitea.michaelthomson.dev/mthomson/habits/internal/user/service"
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"github.com/gofrs/uuid/v5"
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)
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func TestCreateUser(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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logger := slog.Default()
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tdb := test.NewTestDatabase(t)
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defer tdb.TearDown()
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r := repository.NewUserRepository(logger, tdb.Db)
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userService := service.NewUserService(logger, r)
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t.Run("Create user", func(t *testing.T) {
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uuid := NewUUID(t)
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user := service.NewUser(uuid, "test@test.com", "supersecurehash")
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_, err := userService.CreateUser(ctx, user)
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AssertNoError(t, err)
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})
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}
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func TestGetUser(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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logger := slog.Default()
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tdb := test.NewTestDatabase(t)
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defer tdb.TearDown()
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r := repository.NewUserRepository(logger, tdb.Db)
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uuid := NewUUID(t)
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row := repository.UserRow{Id: uuid, Email: "test@test.com", HashedPassword: "supersecurehash"}
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_, err := r.Create(ctx, row)
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AssertNoError(t, err);
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userService := service.NewUserService(logger, r)
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t.Run("Get exisiting user", func(t *testing.T) {
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_, err := userService.GetUser(ctx, uuid)
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AssertNoError(t, err)
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})
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t.Run("Get non-existant user", func(t *testing.T) {
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_, err := userService.GetUser(ctx, NewUUID(t))
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AssertErrors(t, err, service.ErrNotFound)
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})
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}
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func TestDeleteUser(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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logger := slog.Default()
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tdb := test.NewTestDatabase(t)
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defer tdb.TearDown()
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r := repository.NewUserRepository(logger, tdb.Db)
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uuid := NewUUID(t)
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row := repository.UserRow{Id: uuid, Email: "test@test.com", HashedPassword: "supersecurehash"}
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_, err := r.Create(ctx, row)
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AssertNoError(t, err);
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userService := service.NewUserService(logger, r)
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t.Run("Delete exisiting user", func(t *testing.T) {
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err := userService.DeleteUser(ctx, uuid)
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AssertNoError(t, err)
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})
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t.Run("Delete non-existant user", func(t *testing.T) {
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err := userService.DeleteUser(ctx, uuid)
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AssertErrors(t, err, service.ErrNotFound)
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})
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}
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func TestUpdateUser(t *testing.T) {
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t.Parallel()
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ctx := context.Background()
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logger := slog.Default()
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tdb := test.NewTestDatabase(t)
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defer tdb.TearDown()
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r := repository.NewUserRepository(logger, tdb.Db)
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uuid := NewUUID(t)
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row := repository.UserRow{Id: uuid, Email: "test@test.com", HashedPassword: "supersecurehash"}
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_, err := r.Create(ctx, row)
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AssertNoError(t, err);
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userService := service.NewUserService(logger, r)
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t.Run("Update exisiting user", func(t *testing.T) {
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user := service.User{uuid, "new@email.com", "supersecurehash"}
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err := userService.UpdateUser(ctx, user)
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AssertNoError(t, err)
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newUser, err := userService.GetUser(ctx, uuid)
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AssertNoError(t, err)
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AssertUsers(t, newUser, user)
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})
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t.Run("Update non-existant user", func(t *testing.T) {
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user := service.User{NewUUID(t), "new@email.com", "supersecurehash"}
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err := userService.UpdateUser(ctx, user)
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AssertErrors(t, err, service.ErrNotFound)
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})
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}
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func AssertErrors(t testing.TB, got, want error) {
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t.Helper()
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if got != want {
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t.Errorf("got error: %v, want error: %v", want, got)
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}
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}
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func AssertNoError(t testing.TB, err error) {
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t.Helper()
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if err != nil {
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t.Errorf("expected no error, got %v", err)
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}
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}
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func AssertUsers(t testing.TB, got, want service.User) {
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if !got.Equal(want) {
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t.Errorf("got %+v want %+v", got, want)
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}
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}
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func NewUUID(t testing.TB) uuid.UUID {
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t.Helper()
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uuid, err := uuid.NewV4()
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if err != nil {
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t.Errorf("error generation uuid: %v", err)
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}
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return uuid
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}
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