Add a test for registering a user.

app/src/Bootstrap.php

@@ -4,15 +4,24 @@ namespace Slovocast;
 
 use Slim\App;
 use Slim\Factory\AppFactory;
+
 use League\Config\Configuration;
+
 use DI\Container;
 use DI\ContainerBuilder;
+
 use Slim\Views\Twig;
 use Slim\Views\TwigMiddleware;
+
 use Slovocast\Routes;
 use Slovocast\Configuration\SiteInformationSchema;
 use Slovocast\Configuration\DatabaseConnectionSchema;
 
+use Psr\Log\LoggerInterface;
+use Monolog\Logger;
+use Monolog\Handler\StreamHandler;
+use Monolog\Level;
+
 class Bootstrap
 {
     /**
@@ -58,6 +67,13 @@ class Bootstrap
             'flash' => function () {
                 $messages = [];
                 return new \Slim\Flash\Messages($messages);
+            },
+            LoggerInterface::class => function() {
+                $logger = new Logger();
+                $logger->pushHandler(
+                    new StreamHandler(__DIR__ . '/var/logs', Level::Warning)
+                );
+                return $logger;
             }
         ]);
 
@@ -108,6 +124,7 @@ class Bootstrap
                 session_start();
             }
 
+            /** @var $this ContainerInterface */
             $this->get('flash')->__construct($_SESSION);
 
             return $next->handle($req);

app/tests/Controller/User/RegisterUserActionTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Slovocast\Tests\Controller\User;
+
+use Slovocast\Tests\TestCase;
+
+class RegisterUserActionTest extends TestCase
+{
+    public function testSuccessfulRegistration(): void
+    {
+
+    }
+
+    public function testFailingRegistration(): void
+    {
+
+    }
+}