✨ (EtuUTTApiTestCase) Added createUser method

Added createUser method. The methods takes 4 parameters : $firstName, $lastName, $login and $role. Role is not mendatory. If not provided, it is defaulted
to 'ROLE_USER'. It creates a user according to the parameters, put it in the database, and flush the data. In the future, if necessary, it could be useful
to add a parameter to ask if we want to flush the database, because it could maybe be slow if we need to do that a lot.

Author: Teddy Roncin

tests/EtuUTTApiTestCase.php

@@ -19,13 +19,7 @@ protected function setUp(): void
     {
         $this->em = $this->getContainer()->get('doctrine')->getManager();
         (new ORMPurger($this->em))->purge();
-        $this->user = new User();
-        $this->user->setFirstName('test');
-        $this->user->setLastName('test');
-        $this->user->setLogin('test');
-        $this->user->addRole('ROLE_ADMIN');
-        $this->em->persist($this->user);
-        $this->em->flush();
+        $this->user = $this->createUser('test', 'test', 'test', 'ROLE_ADMIN');
     }
 
     protected function loadFixtures(Fixture... $fixtures)
@@ -39,4 +33,16 @@ protected function loadFixtures(Fixture... $fixtures)
         }
     }
 
+    protected function createUser(string $firstName, string $lastName, string $login, ?string $role = 'ROLE_USER') : User
+    {
+        $user = new User();
+        $user->setFirstName($firstName);
+        $user->setLastName($lastName);
+        $user->setLogin($login);
+        $user->addRole($role);
+        $this->em->persist($user);
+        $this->em->flush();
+        return $user;
+    }
+
 }