<?php

declare(strict_types=1);

use App\Support\SupplierIdentifier;
use Tests\TestCase;

uses(TestCase::class);

it('extracts root domain from subdomain', function (): void {
    expect(SupplierIdentifier::extractRootDomain('krasnoyarsk.carmoney.ru'))->toBe('carmoney.ru');
    expect(SupplierIdentifier::extractRootDomain('client.carmoney.ru'))->toBe('carmoney.ru');
    expect(SupplierIdentifier::extractRootDomain('next.vashinvestor.ru'))->toBe('vashinvestor.ru');
    expect(SupplierIdentifier::extractRootDomain('cabinet.caranga.ru'))->toBe('caranga.ru');
});

it('returns null for already-root domain', function (): void {
    expect(SupplierIdentifier::extractRootDomain('carmoney.ru'))->toBeNull();
    expect(SupplierIdentifier::extractRootDomain('заложитьптс.рф'))->toBeNull();
});

it('returns null for non-domain identifiers', function (): void {
    expect(SupplierIdentifier::extractRootDomain('7800XXXXXXX'))->toBeNull();
    expect(SupplierIdentifier::extractRootDomain(''))->toBeNull();
    expect(SupplierIdentifier::extractRootDomain('   '))->toBeNull();
    expect(SupplierIdentifier::extractRootDomain('TINKOFF'))->toBeNull();
});