<?php

use App\Services\LocaleGuard;
use Tests\TestCase;

uses(TestCase::class);

it('normalizes supported locales', function () {
    expect(LocaleGuard::normalize('DE'))->toBe('de');
    expect(LocaleGuard::normalize('en'))->toBe('en');
    expect(LocaleGuard::normalize('FR'))->toBe('fr');
});

it('returns null for unsupported or invalid locale strings', function () {
    expect(LocaleGuard::normalize('-1 or 5*5=25 --'))->toBeNull();
    expect(LocaleGuard::normalize('xx'))->toBeNull();
    expect(LocaleGuard::normalize(null))->toBeNull();
    expect(LocaleGuard::normalize(''))->toBeNull();
});