Fix the warnings on the test case.

app/composer.json

@@ -30,6 +30,6 @@
         }
     },
     "scripts": {
-        "test": "./vendor/bin/phpunit tests"
+        "test": "./vendor/bin/phpunit tests --display-warnings"
     }
 }

app/src/Controller/User/RegisterUserAction.php

@@ -29,12 +29,12 @@ class RegisterUserAction extends Controller
             'password' => $requestData['password'],
         ]);
 
-        try {
-            $this->userRepository->save($user);
+        $result = $this->userRepository->save($user);
+
+        if ($result) {
             return $this->render('user/success.twig');
-        } catch (\Exception $e) {
-            $response = $this->render('user/register.twig');
-            return $response->withStatus(400);
+        } else {
+            return $this->render('user/register.twig')->withStatus(400);
         }
         
     }

app/src/Domain/Entity/User.php

@@ -55,15 +55,15 @@ class User
     {
         $user = new self($props['email'], $props['password'], $props['name']);
 
-        if ($props['id']) {
+        if (array_key_exists('id', $props)) {
             $user->setId($props['id']);
         }
 
-        if ($props['createdAt']) {
+        if (array_key_exists('createdAt', $props)) {
             $user->setCreatedAt($props['createdAt']);
         }
 
-        if ($props['updatedAt']) {
+        if (array_key_exists('updatedAt', $props)) {
             $user->setUpdatedAt($props['updatedAt']);
         }
 

app/tests/Controller/User/RegisterUserActionTest.php

@@ -44,6 +44,26 @@ class RegisterUserActionTest extends TestCase
 
     public function testFailingRegistration(): void
     {
+        $user = $this->getUser();
+        $prophecy = $this->getProphet()
+                         ->prophesize(UserRepositoryInterface::class);
+        $prophecy->save($user)->willReturn(false);
 
+        $app = $this->getAppInstance();
+
+        /** @var $container \DI\Container */
+        $container = $app->getContainer();
+        $container->set(UserRepositoryInterface::class, $prophecy->reveal());
+
+        $request = $this->createRequest('POST', '/users/register')
+                        ->withParsedBody([
+                            'email' => 'dave@slovocast.com',
+                            'name' => 'Dave SH',
+                            'password' => 'hashed_password',
+                            'checked_password' => 'hashed_password'
+                        ]);
+
+        $response = $app->handle($request);
+        $this->assertEquals(400, $response->getStatusCode());
     }
 }