Psr18Client example

class Psr18ClientTest extends TestCase
{
    public static function setUpBeforeClass(): void
    {
        TestHttpServer::start();
    }

    public function testSendRequest()
    {
        $factory = new Psr17Factory();
        $client = new Psr18Client(new NativeHttpClient(), $factory, $factory);

        $response = $client->sendRequest($factory->createRequest('GET', 'http://localhost:8057'));

        $this->assertSame(200, $response->getStatusCode());
        $this->assertSame('application/json', $response->getHeaderLine('content-type'));

        $body = json_decode((string) $response->getBody(), true);

        $this->assertSame('HTTP/1.1', $body['SERVER_PROTOCOL']);
    }