Move integration tests to separate directory

Again, we do all of this to prepare for creating "real" test suites for
each type of tests.

tests/integration/api/Controller/CreateTokenControllerTest.php

@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\integration\api\Controller;
+
+use Flarum\Api\Controller\CreateTokenController;
+use Flarum\Http\AccessToken;
+
+class CreateTokenControllerTest extends ApiControllerTestCase
+{
+    protected $controller = CreateTokenController::class;
+
+    /**
+     * @test
+     */
+    public function user_generates_token()
+    {
+        $user = $this->getNormalUser();
+
+        $response = $this->call($this->controller, null, [], [
+            'identification' => $user->username,
+            'password' => $this->userAttributes['password']
+        ]);
+
+        $data = json_decode($response->getBody()->getContents(), true);
+
+        $this->assertEquals($user->id, $data['userId']);
+
+        $token = $data['token'];
+
+        $this->assertEquals($user->id, AccessToken::findOrFail($token)->user_id);
+    }
+}