Mocking interfaces in unit tests

1- add a //go:generate directive above the interface:

//go:generate mockery --name Repository
type Repository interface {
	AdminExistByPhoneNumber(ctx context.Context, phoneNumber string) (bool, error)
	AdminExistByEmail(ctx context.Context, email string) (bool, error)
}

2- run go generate to create the mock files:

go generate ./...

3- use the generated mock types in your tests.

for more information visit: https://vektra.github.io/mockery/latest/