Guzzle\Clientをモッカブルにする

app/MetadataResolver/KomifloResolver.php

@@ -2,8 +2,20 @@
 
 namespace App\MetadataResolver;
 
+use GuzzleHttp\Client;
+
 class KomifloResolver implements Resolver
 {
+    /**
+     * @var Client
+     */
+    private $client;
+
+    public function __construct(Client $client)
+    {
+        $this->client = $client;
+    }
+
     public function resolve(string $url): Metadata
     {
         if (preg_match('~komiflo\.com(?:/#!)?/comics/(\\d+)~', $url, $matches) !== 1) {
@@ -11,8 +23,7 @@ class KomifloResolver implements Resolver
         }
         $id = $matches[1];
 
-        $client = new \GuzzleHttp\Client();
-        $res = $client->get('https://api.komiflo.com/content/id/' . $id);
+        $res = $this->client->get('https://api.komiflo.com/content/id/' . $id);
         if ($res->getStatusCode() === 200) {
             $json = json_decode($res->getBody()->getContents(), true);
             $metadata = new Metadata();