diff --git a/phinx.php b/phinx.php
index 0349f87..b83924f 100644
--- a/phinx.php
+++ b/phinx.php
@@ -1,35 +1,36 @@
-<?php declare(strict_types=1);
+<?php
 
-require_once __DIR__ . '/vendor/autoload.php';
+declare(strict_types=1);
+
+require_once __DIR__.'/vendor/autoload.php';
 
 $dotenv = Dotenv\Dotenv::create(__DIR__);
 $dotenv->load();
 
-$settings = require __DIR__ . '/src/settings.php';
+$settings = require __DIR__.'/src/settings.php';
 $app = new \Slim\App($settings);
 // Set up dependencies
-require __DIR__ . '/src/dependencies.php';
+require __DIR__.'/src/dependencies.php';
 
 $db = $container['settings']['database'];
 
 return [
     'paths' => [
         'migrations' => 'src/Migrations',
-        'seeds' => 'src/Seeds',
+        'seeds'      => 'src/Seeds',
     ],
     'environments' => [
         'default' => [
             'adapter' => $db['driver'],
-            'host' => $db['host'],
-            'name' => $db['database'],
-            'user' => $db['username'],
-            'pass' => $db['password'],
+            'host'    => $db['host'],
+            'name'    => $db['database'],
+            'user'    => $db['username'],
+            'pass'    => $db['password'],
         ],
         'default_migration_table' => 'migrations',
     ],
     'migration_base_class' => "App\Migrations\Migration",
-    'templates' => [
+    'templates'            => [
         'file' => 'src/Migrations/Migration.template.php.dist',
     ],
 ];
-
diff --git a/src/Http/Controller/AuthController.php b/src/Http/Controller/AuthController.php
index 7ba2195..bbe8378 100644
--- a/src/Http/Controller/AuthController.php
+++ b/src/Http/Controller/AuthController.php
@@ -1,10 +1,12 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Http\Controller;
 
+use App\Http\Validators\Validator as ValidatorRule;
 use App\Repository\AuthRepository;
 use Awurth\SlimValidation\Validator;
-use App\Http\Validators\Validator as ValidatorRule;
 use Slim\Http\Request;
 use Slim\Http\Response;
 
@@ -23,7 +25,7 @@ final class AuthController
     /**
      * HomeController constructor.
      *
-     * @param Validator $validator
+     * @param Validator      $validator
      * @param AuthRepository $repository
      */
     public function __construct(Validator $validator, AuthRepository $repository)
@@ -35,7 +37,7 @@ public function __construct(Validator $validator, AuthRepository $repository)
     /**
      * Get access token.
      *
-     * @param Request $request
+     * @param Request  $request
      * @param Response $response
      *
      * @return Response
@@ -45,35 +47,34 @@ public function token(Request $request, Response $response)
         $validator = $this->validator->validate(
             $request,
             [
-                'email' => ValidatorRule::notEmpty(),
+                'email'    => ValidatorRule::notEmpty(),
                 'password' => ValidatorRule::notEmpty(),
             ]
         );
 
-        if($validator->isValid()) {
+        if ($validator->isValid()) {
             $token = $this->repository->login(
                 $request->getParsedBodyParam('email'),
                 $request->getParsedBodyParam('password')
             );
 
-            if(!empty($token)) {
+            if (!empty($token)) {
                 return $response->withStatus(200)->withJson([
                     'status' => 'Success',
-                    'token' => $token,
+                    'token'  => $token,
                 ]);
             }
 
             return $response->withStatus(401)->withJson([
-                'status' => 'Authentication error',
+                'status'  => 'Authentication error',
                 'message' => 'User not found',
             ]);
-
         }
 
         return $response->withStatus(400)->withJson(
             [
                 'status' => 'Validation Error',
-                'data' => $validator->getErrors()
+                'data'   => $validator->getErrors(),
             ]
         );
     }
diff --git a/src/Http/Validators/Validator.php b/src/Http/Validators/Validator.php
index 2603fdf..4d63fc7 100644
--- a/src/Http/Validators/Validator.php
+++ b/src/Http/Validators/Validator.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Http\Validators;
 
@@ -6,5 +8,4 @@
 
 class Validator extends Respect
 {
-
 }
diff --git a/src/Migrations/20190402135252_create_user_table.php b/src/Migrations/20190402135252_create_user_table.php
index fa7bab9..4670d95 100644
--- a/src/Migrations/20190402135252_create_user_table.php
+++ b/src/Migrations/20190402135252_create_user_table.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 use App\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
diff --git a/src/Migrations/Migration.php b/src/Migrations/Migration.php
index 1eac5eb..d529c0c 100644
--- a/src/Migrations/Migration.php
+++ b/src/Migrations/Migration.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Migrations;
 
@@ -10,6 +12,7 @@ class Migration extends AbstractMigration
 {
     /** @var Schema */
     private $schema;
+
     /**
      * Create a schema builder instance.
      */
@@ -17,6 +20,7 @@ public function init()
     {
         $this->schema = (new Capsule())->schema();
     }
+
     /**
      * Get the schema builder instance.
      *
diff --git a/src/Models/Translation.php b/src/Models/Translation.php
index 67be196..93bdc8a 100644
--- a/src/Models/Translation.php
+++ b/src/Models/Translation.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Models;
 
@@ -46,7 +48,7 @@ final class Translation implements \JsonSerializable
      *
      * @return $this
      */
-    public function setSourceText(string $text): Translation
+    public function setSourceText(string $text): self
     {
         $this->sourceText = $text;
 
@@ -70,7 +72,7 @@ public function getSourceText(): string
      *
      * @return Translation
      */
-    public function setTargetText(string $text): Translation
+    public function setTargetText(string $text): self
     {
         $this->targetText = $text;
 
@@ -94,7 +96,7 @@ public function getTargetText(): string
      *
      * @return Translation
      */
-    public function setSourceLanguage(string $language): Translation
+    public function setSourceLanguage(string $language): self
     {
         $this->sourceLanguage = strtolower($language);
 
@@ -118,7 +120,7 @@ public function getSourceLanguage(): string
      *
      * @return Translation
      */
-    public function setTargetLanguage(string $language): Translation
+    public function setTargetLanguage(string $language): self
     {
         $this->targetLanguage = strtolower($language);
 
@@ -142,7 +144,7 @@ public function getTargetLanguage(): string
      *
      * @return Translation
      */
-    public function setLoadedFromCache(bool $flag): Translation
+    public function setLoadedFromCache(bool $flag): self
     {
         $this->loadedFromCache = $flag;
 
@@ -168,9 +170,9 @@ public function jsonSerialize(): array
     {
         return
             [
-                'source_text' => $this->getSourceText(),
+                'source_text'     => $this->getSourceText(),
                 'source_language' => $this->getSourceLanguage(),
-                'target_text' => $this->getTargetText(),
+                'target_text'     => $this->getTargetText(),
                 'target_language' => $this->getTargetLanguage(),
             ];
     }
diff --git a/src/Repository/AuthRepository.php b/src/Repository/AuthRepository.php
index d55381a..26387fc 100644
--- a/src/Repository/AuthRepository.php
+++ b/src/Repository/AuthRepository.php
@@ -1,10 +1,12 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Repository;
 
-use Psr\Container\ContainerInterface;
 use Firebase\JWT\JWT;
 use Illuminate\Database\Query\Builder;
+use Psr\Container\ContainerInterface;
 
 final class AuthRepository
 {
@@ -43,12 +45,12 @@ public function login(string $email, string $password): string
 
         $users = $this->userTable->where('email', '=', $email);
 
-        if($users->exists()) {
+        if ($users->exists()) {
             $user = $users->get()->first();
-            
-            if($user && password_verify($password, $user->password)) {
+
+            if ($user && password_verify($password, $user->password)) {
                 $token = JWT::encode([
-                    'id' => $user->id,
+                    'id'    => $user->id,
                     'email' => $user->email,
                 ], $this->settings['secret']);
             }
diff --git a/src/Repository/TranslateRepository.php b/src/Repository/TranslateRepository.php
index 051ec34..a3037ed 100644
--- a/src/Repository/TranslateRepository.php
+++ b/src/Repository/TranslateRepository.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 namespace App\Repository;
 
@@ -6,10 +8,10 @@
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\GuzzleException;
 use Monolog\Logger;
+use Predis\Client as RedisClient;
 use Predis\Response\Status;
 use Psr\Container\ContainerInterface;
 use Psr\Http\Message\ResponseInterface;
-use Predis\Client as RedisClient;
 use Tightenco\Collect\Support\Collection;
 
 final class TranslateRepository
@@ -17,7 +19,7 @@ final class TranslateRepository
     const TRANSLATION_DIVIDER = ':';
 
     /**
-     * Configuration settings
+     * Configuration settings.
      *
      * @var array
      */
@@ -42,9 +44,9 @@ final class TranslateRepository
      * TranslateRepository constructor.
      *
      * @param ContainerInterface $container
-     * @param Client $httpClient
-     * @param array $settings
-     * @param Logger $logger
+     * @param Client             $httpClient
+     * @param array              $settings
+     * @param Logger             $logger
      */
     public function __construct(ContainerInterface $container, Client $httpClient, array $settings, Logger $logger)
     {
@@ -74,14 +76,13 @@ public function edit(string $sourceText, string $sourceLang, string $targetLang,
                     ->setTargetText($targetText);
 
         $saved = $this->saveToCache($translation);
-        if($saved) {
+        if ($saved) {
             return $translation;
         }
 
         return false;
     }
 
-
     /**
      * Delete translation.
      *
@@ -95,10 +96,10 @@ public function delete(string $sourceText, string $sourceLang, string $targetLan
     {
         return (bool) $this->cache->del([
             $sourceLang
-            . self::TRANSLATION_DIVIDER
-            . $sourceText
-            . self::TRANSLATION_DIVIDER
-            . $targetLang
+            .self::TRANSLATION_DIVIDER
+            .$sourceText
+            .self::TRANSLATION_DIVIDER
+            .$targetLang,
         ]);
     }
 
@@ -113,7 +114,7 @@ public function getAllTranslations(): Collection
         $translationCollection = (new Collection($allKeys))->map(function ($item) {
             return $this->getFromCache($item);
         });
- 
+
         return $translationCollection;
     }
 
@@ -131,12 +132,12 @@ public function translate(string $text, string $targetLang, string $sourceLang =
         $translation = new Translation();
 
         try {
-            if($this->existsInCache($text, $sourceLang, $targetLang)) {
+            if ($this->existsInCache($text, $sourceLang, $targetLang)) {
                 return $this->getFromCache($sourceLang
-                                           . self::TRANSLATION_DIVIDER
-                                           . $text
-                                           . self::TRANSLATION_DIVIDER
-                                           . $targetLang);
+                                           .self::TRANSLATION_DIVIDER
+                                           .$text
+                                           .self::TRANSLATION_DIVIDER
+                                           .$targetLang);
             }
 
             // Process DeepL response
@@ -155,7 +156,6 @@ public function translate(string $text, string $targetLang, string $sourceLang =
             $this->saveToCache($translation);
 
             return $translation;
-
         } catch (GuzzleException $e) {
             $this->logger->warning($e->getMessage());
         }
@@ -170,22 +170,23 @@ public function translate(string $text, string $targetLang, string $sourceLang =
      * @param string $text
      * @param string $sourceLang
      *
-     * @return ResponseInterface
      * @throws \GuzzleHttp\Exception\GuzzleException
+     *
+     * @return ResponseInterface
      */
     protected function deeplTranslate(string $targetLang, string $text, string $sourceLang = ''): ResponseInterface
     {
         return $this->httpClient->request(
             'GET',
-            '/' . $this->settings['api_version'] . '/translate',
+            '/'.$this->settings['api_version'].'/translate',
             [
             'query' => [
-                'auth_key' => $this->settings['api_token'],
+                'auth_key'            => $this->settings['api_token'],
                 'preserve_formatting' => 1,
-                'text' => $text,
-                'source_lang' => $sourceLang,
-                'target_lang' => $targetLang,
-            ]
+                'text'                => $text,
+                'source_lang'         => $sourceLang,
+                'target_lang'         => $targetLang,
+            ],
             ]
         );
     }
@@ -203,10 +204,10 @@ private function existsInCache(string $text, string $sourceLanguage, string $tar
     {
         return (bool) $this->cache->exists(
             $sourceLanguage
-            . self::TRANSLATION_DIVIDER
-            . $text
-            . self::TRANSLATION_DIVIDER
-            . $targetLanguage
+            .self::TRANSLATION_DIVIDER
+            .$text
+            .self::TRANSLATION_DIVIDER
+            .$targetLanguage
         );
     }
 
@@ -220,10 +221,10 @@ private function existsInCache(string $text, string $sourceLanguage, string $tar
     private function saveToCache(Translation $translation): bool
     {
         $key = $translation->getSourceLanguage()
-               . self::TRANSLATION_DIVIDER
-               . $translation->getSourceText()
-               . self::TRANSLATION_DIVIDER
-               . $translation->getTargetLanguage();
+               .self::TRANSLATION_DIVIDER
+               .$translation->getSourceText()
+               .self::TRANSLATION_DIVIDER
+               .$translation->getTargetLanguage();
 
         /** @var Status $response */
         $response = $this->cache->set($key, $translation->getTargetText());
diff --git a/src/dependencies.php b/src/dependencies.php
index b8c9e6a..c709fd1 100644
--- a/src/dependencies.php
+++ b/src/dependencies.php
@@ -1,14 +1,16 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
-use App\Http\Controller\TranslateController;
 use App\Http\Controller\AuthController;
+use App\Http\Controller\TranslateController;
 use Psr\Container\ContainerInterface;
 
 $container = $app->getContainer();
 
 // Database
 $container['database'] = function (ContainerInterface $c) {
-    $capsule = new \Illuminate\Database\Capsule\Manager;
+    $capsule = new \Illuminate\Database\Capsule\Manager();
     $capsule->addConnection($c->get('settings')['database']);
     $capsule->setAsGlobal();
 
@@ -19,9 +21,9 @@
 // Redis cache
 $container['cache'] = function (ContainerInterface $c) {
     $config = [
-        'schema' => $c->get('settings')['redis']['schema'],
-        'host' => $c->get('settings')['redis']['host'],
-        'port' => $c->get('settings')['redis']['port'],
+        'schema'   => $c->get('settings')['redis']['schema'],
+        'host'     => $c->get('settings')['redis']['host'],
+        'port'     => $c->get('settings')['redis']['port'],
         'database' => $c->get('settings')['redis']['database'],
     ];
 
@@ -34,6 +36,7 @@
     $logger = new Monolog\Logger($settings['name']);
     $logger->pushProcessor(new Monolog\Processor\UidProcessor());
     $logger->pushHandler(new Monolog\Handler\StreamHandler($settings['path'], $settings['level']));
+
     return $logger;
 };
 
@@ -45,8 +48,8 @@
 // Controller
 $container[TranslateController::class] = function (ContainerInterface $c): TranslateController {
     $logger = $c->get('logger');
-    $cache = $c->get("cache");
-    $validator = $c->get("validator");
+    $cache = $c->get('cache');
+    $validator = $c->get('validator');
 
     $guzzle = new \GuzzleHttp\Client(
         [
@@ -55,22 +58,21 @@
     );
 
     $settings = $c->get('settings')['deepl'];
-    
+
     $repository = new \App\Repository\TranslateRepository($c, $guzzle, $settings, $logger);
 
     return new TranslateController($validator, $repository);
 };
 
 $container[AuthController::class] = function (ContainerInterface $c): AuthController {
-    $validator = $c->get("validator");
+    $validator = $c->get('validator');
     $repository = new \App\Repository\AuthRepository($c);
 
     return new AuthController($validator, $repository);
 };
 
 // If not on production, show errors (remove Slim error handlers)
-if($container['settings']['displayErrorDetails'] === true) {
+if ($container['settings']['displayErrorDetails'] === true) {
     unset($container['phpErrorHandler']);
     unset($container['errorHandler']);
 }
-
diff --git a/src/middleware.php b/src/middleware.php
index a3bc18f..65c2ce8 100644
--- a/src/middleware.php
+++ b/src/middleware.php
@@ -1,31 +1,35 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 $app->add(new Tuupola\Middleware\CorsMiddleware([
-    "origin" => ["*"],
-    "methods" => ["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
-    "headers.allow" => ["Authorization", "If-Match", "If-Unmodified-Since", "Content-Type", "Accept"],
-    "headers.expose" => ["Etag"],
-    "credentials" => true,
-    "cache" => 86400,
-    "error" => function (\Slim\Http\Response $response, array $arguments) {
-        $data["status"] = "Forbidden";
-        $data["message"] = $arguments["message"];
+    'origin'         => ['*'],
+    'methods'        => ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'],
+    'headers.allow'  => ['Authorization', 'If-Match', 'If-Unmodified-Since', 'Content-Type', 'Accept'],
+    'headers.expose' => ['Etag'],
+    'credentials'    => true,
+    'cache'          => 86400,
+    'error'          => function (\Slim\Http\Response $response, array $arguments) {
+        $data['status'] = 'Forbidden';
+        $data['message'] = $arguments['message'];
+
         return $response
             ->withStatus(403)
-            ->withHeader("Content-Type", "application/json")
+            ->withHeader('Content-Type', 'application/json')
             ->write(json_encode($data, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
-    }
+    },
 ]));
 
 $app->add(new Tuupola\Middleware\JwtAuthentication([
-    "path" => "/api",
-    "secret" => $_ENV['APP_API_SECRET'],
-    "error" => function (\Slim\Http\Response $response, array $arguments) {
-        $data["status"] = "Authentication error";
-        $data["message"] = $arguments["message"];
+    'path'   => '/api',
+    'secret' => $_ENV['APP_API_SECRET'],
+    'error'  => function (\Slim\Http\Response $response, array $arguments) {
+        $data['status'] = 'Authentication error';
+        $data['message'] = $arguments['message'];
+
         return $response
             ->withStatus(401)
-            ->withHeader("Content-Type", "application/json")
+            ->withHeader('Content-Type', 'application/json')
             ->write(json_encode($data, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
-    }
+    },
 ]));
diff --git a/src/routes.php b/src/routes.php
index 0977807..e2f2d97 100644
--- a/src/routes.php
+++ b/src/routes.php
@@ -1,24 +1,25 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 // Get JWT token
-$app->post('/auth/token', \App\Http\Controller\AuthController::class . ':token')->setName('auth.token');
+$app->post('/auth/token', \App\Http\Controller\AuthController::class.':token')->setName('auth.token');
 
 $app->group('/api/v1', function () {
     // Translate text
     $this->get(
         '/translate/text/{text}/target-lang/{target-lang}[/source-lang/{source-lang}]',
-        \App\Http\Controller\TranslateController::class . ':translate'
+        \App\Http\Controller\TranslateController::class.':translate'
     )->setName('translate');
 
     // Get all cached translations
-    $this->get('/translation', \App\Http\Controller\TranslateController::class . ':translations')
+    $this->get('/translation', \App\Http\Controller\TranslateController::class.':translations')
          ->setName('translation.index');
 
     // Update translation
-    $this->patch('/translation', \App\Http\Controller\TranslateController::class . ':edit')
+    $this->patch('/translation', \App\Http\Controller\TranslateController::class.':edit')
          ->setName('translation.edit');
     // Delete translation
-    $this->delete('/translation', \App\Http\Controller\TranslateController::class . ':delete')
+    $this->delete('/translation', \App\Http\Controller\TranslateController::class.':delete')
          ->setName('translation.delete');
 });
-
diff --git a/src/settings.php b/src/settings.php
index 82c030a..d4591da 100644
--- a/src/settings.php
+++ b/src/settings.php
@@ -1,10 +1,12 @@
-<?php declare(strict_types = 1);
+<?php
+
+declare(strict_types=1);
 
 return [
     'settings' => [
         'determineRouteBeforeAppMiddleware' => false,
-        'displayErrorDetails' => $_ENV['APP_ENV'] === 'production' ? false : true,
-        'addContentLengthHeader' => false, // Allow the web server to send the content-length header
+        'displayErrorDetails'               => $_ENV['APP_ENV'] === 'production' ? false : true,
+        'addContentLengthHeader'            => false, // Allow the web server to send the content-length header
 
         // JWT (Json Web Tokens)
         'jwt' => [
@@ -13,11 +15,11 @@
 
         // Database
         'database' => [
-            'driver' => $_ENV['DB_DRIVER'] ?? 'mysql',
-            'host' => $_ENV['DB_HOST'] ?? 'localhost',
-            'database' => $_ENV['DB_NAME'] ?? 'trnsltr',
-            'username' => $_ENV['DB_USER'] ?? 'trnsltr',
-            'password' => $_ENV['DB_PASSWORD'] ?? '',
+            'driver'    => $_ENV['DB_DRIVER'] ?? 'mysql',
+            'host'      => $_ENV['DB_HOST'] ?? 'localhost',
+            'database'  => $_ENV['DB_NAME'] ?? 'trnsltr',
+            'username'  => $_ENV['DB_USER'] ?? 'trnsltr',
+            'password'  => $_ENV['DB_PASSWORD'] ?? '',
             'charset'   => 'utf8',
             'collation' => 'utf8_unicode_ci',
             'prefix'    => $_ENV['DB_PREFIX'] ?? '',
@@ -25,24 +27,24 @@
 
         // Redis cache
         'redis' => [
-            'schema' => 'tcp',
-            'host' => $_ENV['REDIS_HOST'] ?? '127.0.0.1',
-            'port' => $_ENV['REDIS_PORT'] ?? 6379,
+            'schema'   => 'tcp',
+            'host'     => $_ENV['REDIS_HOST'] ?? '127.0.0.1',
+            'port'     => $_ENV['REDIS_PORT'] ?? 6379,
             'database' => $_ENV['REDIS_DATABASE'] ?? 0,
         ],
 
         // Monolog settings
         'logger' => [
-            'name' => 'slim-app',
-            'path' => isset($_ENV['docker']) ? 'php://stdout' : __DIR__ . '/../logs/app.log',
+            'name'  => 'slim-app',
+            'path'  => isset($_ENV['docker']) ? 'php://stdout' : __DIR__.'/../logs/app.log',
             'level' => \Monolog\Logger::DEBUG,
         ],
 
         // DeepL translator
         'deepl' => [
-            'api_host' => $_ENV['DEEPL_API_HOST'] ?? 'https://api.deepl.com',
-            'api_token' => $_ENV['DEEPL_API_TOKEN'],
+            'api_host'    => $_ENV['DEEPL_API_HOST'] ?? 'https://api.deepl.com',
+            'api_token'   => $_ENV['DEEPL_API_TOKEN'],
             'api_version' => 'v2',
-        ]
+        ],
     ],
 ];
diff --git a/tests/BaseTestCase.php b/tests/BaseTestCase.php
index 29132f0..b9899a1 100644
--- a/tests/BaseTestCase.php
+++ b/tests/BaseTestCase.php
@@ -57,36 +57,36 @@ protected function tearDown()
      */
     protected function createApplication(): void
     {
-        $dotenv = Dotenv::create(__DIR__ . '/..');
+        $dotenv = Dotenv::create(__DIR__.'/..');
         $dotenv->load();
 
         // Use the application settings
-        $settings = require __DIR__ . '/../src/settings.php';
+        $settings = require __DIR__.'/../src/settings.php';
         // Instantiate the application
         $this->app = $app = new App($settings);
         // Set up dependencies
-        require __DIR__ . '/../src/dependencies.php';
+        require __DIR__.'/../src/dependencies.php';
         // Register middleware
         if ($this->withMiddleware) {
-            require __DIR__ . '/../src/middleware.php';
+            require __DIR__.'/../src/middleware.php';
         }
         // Register routes
-        require __DIR__ . '/../src/routes.php';
+        require __DIR__.'/../src/routes.php';
     }
 
     /**
-     * Make a request to the Api
+     * Make a request to the Api.
      *
      * @param       $requestMethod
      * @param       $requestUri
-     * @param null $requestData
+     * @param null  $requestData
      * @param array $headers
+     * @param null  $token
      *
-     * @param null $token
-     *
-     * @return \Psr\Http\Message\ResponseInterface|\Slim\Http\Response
      * @throws \Slim\Exception\MethodNotAllowedException
      * @throws \Slim\Exception\NotFoundException
+     *
+     * @return \Psr\Http\Message\ResponseInterface|\Slim\Http\Response
      */
     public function request($requestMethod, $requestUri, $requestData = null, $headers = [], $token = null)
     {
@@ -94,17 +94,18 @@ public function request($requestMethod, $requestUri, $requestData = null, $heade
     }
 
     /**
-     * Process the application given a request method and URI
+     * Process the application given a request method and URI.
      *
-     * @param string $requestMethod the request method (e.g. GET, POST, etc.)
-     * @param string $requestUri the request URI
-     * @param array|object|null $requestData the request data
-     * @param array $headers
-     * @param null $token
+     * @param string            $requestMethod the request method (e.g. GET, POST, etc.)
+     * @param string            $requestUri    the request URI
+     * @param array|object|null $requestData   the request data
+     * @param array             $headers
+     * @param null              $token
      *
-     * @return \Psr\Http\Message\ResponseInterface|\Slim\Http\Response
      * @throws \Slim\Exception\MethodNotAllowedException
      * @throws \Slim\Exception\NotFoundException
+     *
+     * @return \Psr\Http\Message\ResponseInterface|\Slim\Http\Response
      */
     public function runApp($requestMethod, $requestUri, $requestData = null, $headers = [], $token = null)
     {
@@ -131,15 +132,14 @@ public function runApp($requestMethod, $requestUri, $requestData = null, $header
         }
 
         // Add token, if exists
-        if($token !== null) {
-            $request = $request->withHeader('Authorization', 'Bearer ' . $token);
+        if ($token !== null) {
+            $request = $request->withHeader('Authorization', 'Bearer '.$token);
         }
 
         // Set up a response object
         $response = new Response();
-        
+
         // Process the application and Return the response
         return $this->app->process($request, $response);
     }
-
 }
diff --git a/tests/Feature/AuthTest.php b/tests/Feature/AuthTest.php
index 14f1f30..3b9ceb1 100644
--- a/tests/Feature/AuthTest.php
+++ b/tests/Feature/AuthTest.php
@@ -1,9 +1,9 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Tests\Feature;
 
-use App\Models\User;
-use App\Repository\AuthRepository;
 use Tests\BaseTestCase;
 
 final class AuthTest extends BaseTestCase
@@ -11,7 +11,7 @@ final class AuthTest extends BaseTestCase
     public function test_auth_validation_error()
     {
         $response = $this->request('POST', '/auth/token');
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(400, $response->getStatusCode());
         $this->assertEquals('Validation Error', $body['status']);
@@ -20,10 +20,10 @@ public function test_auth_validation_error()
     public function test_auth_unauthorized()
     {
         $response = $this->request('POST', '/auth/token', [
-            'email' => 'john.doe@example.com',
-            'password' => 'test123'
+            'email'    => 'john.doe@example.com',
+            'password' => 'test123',
         ]);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(401, $response->getStatusCode());
         $this->assertEquals('Authentication error', $body['status']);
diff --git a/tests/Feature/TranslateTest.php b/tests/Feature/TranslateTest.php
index 46c2182..4242b36 100644
--- a/tests/Feature/TranslateTest.php
+++ b/tests/Feature/TranslateTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Tests\Feature;
 
@@ -11,7 +13,7 @@ class TranslateTest extends BaseTestCase
     public function test_translate_success()
     {
         $response = $this->request('GET', '/api/v1/translate/text/hello/target-lang/de/source-lang/en', null, [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(200, $response->getStatusCode());
         $this->assertEquals('Success', $body['status']);
@@ -28,7 +30,7 @@ public function test_translate_fail_without_auth()
     public function test_translate_validation_error()
     {
         $response = $this->request('GET', '/api/v1/translate/text/hello/target-lang/e', null, [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(400, $response->getStatusCode());
         $this->assertEquals('Validation Error', $body['status']);
@@ -38,7 +40,7 @@ public function test_translate_validation_error()
     public function test_all_translations()
     {
         $response = $this->request('GET', '/api/v1/translation', null, [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(200, $response->getStatusCode());
         $this->assertEquals('Success', $body['status']);
@@ -59,7 +61,7 @@ public function test_edit_translation_success()
             'target_text' => 'kurz',
             'target_lang' => 'de',
         ], [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(200, $response->getStatusCode());
         $this->assertEquals('Success', $body['status']);
@@ -73,7 +75,7 @@ public function test_edit_translation_validation_error()
             'target_text' => 'kurz',
             'target_lang' => 'de',
         ], [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(400, $response->getStatusCode());
         $this->assertEquals('Validation Error', $body['status']);
@@ -101,17 +103,15 @@ public function test_delete_translation_success()
 
         $cache->set(
             $payload['source_lang']
-            . TranslateRepository::TRANSLATION_DIVIDER
-            . $payload['source_text']
-            . TranslateRepository::TRANSLATION_DIVIDER
-            . $payload['target_lang']
-            ,
+            .TranslateRepository::TRANSLATION_DIVIDER
+            .$payload['source_text']
+            .TranslateRepository::TRANSLATION_DIVIDER
+            .$payload['target_lang'],
             'Tasche'
         );
 
-    
         $response = $this->request('DELETE', '/api/v1/translation', $payload, [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(200, $response->getStatusCode());
         $this->assertEquals('Success', $body['status']);
@@ -124,7 +124,7 @@ public function test_delete_translation_validation_error()
             'source_lang' => 'en',
             'target_lang' => 'de',
         ], [], self::TOKEN);
-        $body = json_decode((string)$response->getBody(), true);
+        $body = json_decode((string) $response->getBody(), true);
 
         $this->assertEquals(400, $response->getStatusCode());
         $this->assertEquals('Validation Error', $body['status']);
@@ -136,5 +136,4 @@ public function test_delete_translation_fail_without_auth()
 
         $this->assertEquals(401, $response->getStatusCode());
     }
-
 }