added unit tests

composer.json

@@ -19,5 +19,13 @@
         "slim/twig-view": "^3.3",
         "php-di/php-di": "^6.4",
         "ext-pdo": "*"
+    },
+    "require-dev" : {
+        "phpunit/phpunit": "^9.6"
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\Projet\\": "tests/"
+        }
     }
 }