<?php

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;
use ReflectionClass;
use Services\CurrencyRate;
use Services\CurrencyRate\Client;
use System\Classes\Config;
use System\Classes\MyException;

class CurrencyRateTest extends TestCase
{
    protected function tearDown(): void
    {
        $ref  = new ReflectionClass(CurrencyRate::class);
        $prop = $ref->getProperty('_instances');
        $prop->setAccessible(true);
        $prop->setValue(null, []);

        $ref  = new ReflectionClass(Config::class);
        $prop = $ref->getProperty('config');
        $prop->setAccessible(true);
        $prop->setValue(null, null);
    }

    public function testDefaultConnectionReturnsClient(): void
    {
        $this->assertInstanceOf(Client::class, CurrencyRate::instance());
    }

    public function testInstanceIsCachedPerConnectionName(): void
    {
        $this->assertSame(CurrencyRate::instance('default'), CurrencyRate::instance('default'));
    }

    public function testUnknownConnectionNameThrows(): void
    {
        $this->expectException(MyException::class);
        CurrencyRate::instance('nonexistent');
    }
}