Fix test

Author: ecastro98

src/Mta.php

@@ -63,9 +63,10 @@ public function __construct(
     ) {
         $this->server = $server;
         $this->credential = $credential;
-        $this->resources = new Resources();
         $this->httpClient = $httpClient?? HttpClientDiscovery::find();
         $this->messageFactory = $messageFactory?? MessageFactoryDiscovery::find();
+
+        $this->resources = new Resources();
     }
 
     public function getResource(string $resourceName): MtaResource

tests/Functional/MtaTest.php

@@ -54,7 +54,8 @@ public function testItReturnResource()
     {
         $server = $this->createMock(Server::class);
         $credential = $this->createMock(Credential::class);
-        $mta = new Mta($server, $credential);
+        $client = new Client();
+        $mta = new Mta($server, $credential, $client);
 
         $this->assertInstanceOf(Resource::class, $mta->getResource('someResource'));
     }