Move the response array logic into classes.

SourceQuery/Rcon/RconInterface.php

@@ -17,12 +17,9 @@ namespace xPaw\SourceQuery\Rcon;
 
 use xPaw\SourceQuery\Exception\AuthenticationException;
 use xPaw\SourceQuery\Exception\InvalidPacketException;
-use xPaw\SourceQuery\Socket\SocketInterface;
 
 interface RconInterface
 {
-    public function __construct(SocketInterface $socket);
-
     /**
      * Open.
      */

SourceQuery/Rcon/TestableRcon.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @author Pavel Djundik
+ *
+ * @see https://xpaw.me
+ * @see https://github.com/xPaw/PHP-Source-Query
+ *
+ * @license GNU Lesser General Public License, version 2.1
+ *
+ * @internal
+ */
+
+namespace xPaw\SourceQuery\Rcon;
+
+use xPaw\SourceQuery\Buffer;
+
+final class TestableRcon extends AbstractRcon
+{
+    public function open(): void
+    {
+    }
+
+    public function close(): void
+    {
+    }
+
+    public function authorize(string $password): void
+    {
+    }
+
+    public function command(string $command): string
+    {
+        return '';
+    }
+
+    protected function read(): Buffer
+    {
+        return new Buffer();
+    }
+
+    protected function write(?int $header, string $string = ''): bool
+    {
+        return true;
+    }
+}