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1<?php
2
3namespace Apie\Tests\ExchangeRate;
4
5use Apie\ExchangeRate\ExchangeRateService;
6use PHPUnit\Framework\Attributes\Test;
7use PHPUnit\Framework\TestCase;
8use Symfony\Component\HttpClient\MockHttpClient;
9use Symfony\Component\HttpClient\Response\MockResponse;
10
11class ExchangeRateServiceTest extends TestCase
12{
13    #[Test]
14    public function it_returns_the_rate_for_two_currencies(): void
15    {
16        $client = new MockHttpClient(function (string $method, string $url): MockResponse {
17            self::assertSame('GET', $method);
18            self::assertSame(
19                'https://api.frankfurter.app/latest?from=USD&to=EUR',
20                $url
21            );
22
23            return new MockResponse(json_encode(['rates' => ['EUR' => 0.92]]));
24        });
25
26        $service = new ExchangeRateService($client);
27
28        self::assertSame(0.92, $service->calculateConversionRate('usd', 'eur'));
29    }
30}