package repository

import (
	"testing"
	"time"
)

func TestRegistrationIDPrefix(t *testing.T) {
	registrationDate := time.Date(2026, time.September, 7, 0, 0, 0, 0, time.UTC)

	if got, want := registrationIDPrefix(2, registrationDate), "MCU2609"; got != want {
		t.Fatalf("MCU prefix = %q; want %q", got, want)
	}
	if got, want := registrationIDPrefix(1, registrationDate), "P2609"; got != want {
		t.Fatalf("regular prefix = %q; want %q", got, want)
	}
}