portal/app/tests/Unit/External/BalanceReadingAliveTest.php

<?php

declare(strict_types=1);
use App\Services\External\BalanceReading;
use Tests\TestCase;

uses(TestCase::class);

it('alive: ok=true, баланс null, ошибки нет', function () {
    $r = BalanceReading::alive('aitunnel');
    expect($r->serviceKey)->toBe('aitunnel');
    expect($r->ok)->toBeTrue();
    expect($r->balance)->toBeNull();
    expect($r->error)->toBeNull();
    expect($r->currency)->toBe('RUB');
});