diff --git a/composer.json b/composer.json
index 7058a20..3784717 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,12 @@
         "files": [
             "src/DeltaCMS/Functions.php"
         ]
-    },
+	},
+	"autoload-dev": {
+		"psr-4": {
+			"Tests\\": "tests"
+		}
+	},
     "require": {
         "twig/twig": "^2.7",
         "psr/simple-cache": "^1.0",
diff --git a/public/index.php b/public/index.php
index 8c3ea70..4ce9b88 100644
--- a/public/index.php
+++ b/public/index.php
@@ -21,7 +21,7 @@ if (!$ap->isCacheEnabled()) {
     $cache->clear();
 }
 
-$caches = $cache->getMultiple(array(
+$caches = (array) $cache->getMultiple(array(
     'routes',
     'templates',
     'forms'
@@ -32,12 +32,20 @@ $cachesBool = $caches["routes"] === null || $caches['templates'] === null || $ca
 if (!$ap->isCacheEnabled() || $cachesBool) {
     $cache->clear();
     $modulesDIR = dirname(__DIR__) . "/src/Modules";
-    $modules = array_diff(scandir($modulesDIR), array('..', '.'));
+    $dirs = scandir($modulesDIR);
+    if ($dirs === false) {
+        throw new Exception("Modules folder seems is not readable, Exiting", 1);
+    }
+    $modules = array_diff($dirs, array('..', '.'));
     /** @var string $module */
     foreach ($modules as $module) {
         $moduleDIR = $modulesDIR . "/" . $module;
         if (is_dir($moduleDIR) && is_file($moduleDIR . "/" . strtolower($module) . ".json")) {
-            $json = json_decode(file_get_contents($moduleDIR . "/" . strtolower($module) . ".json"));
+            $fileContent = file_get_contents($moduleDIR . "/" . strtolower($module) . ".json");
+            if ($fileContent === false) {
+                throw new Exception($module . " couldn't be read, please check that the JSON file is readable", 1);
+            }
+            $json = json_decode($fileContent);
             if (isset($json->templateFolder)) {
                 $cache->set(
                     'templates',
@@ -69,7 +77,7 @@ if (!$ap->isCacheEnabled() || $cachesBool) {
             }
         }
     }
-    $caches = $cache->getMultiple(array(
+    $caches = (array) $cache->getMultiple(array(
         'routes',
         'templates',
         'forms'
@@ -94,12 +102,10 @@ foreach ($caches['routes'] as $key => $value) {
         $loader->loadClass($value->controller);
         $function = $value->function;
         // dump($function);
-        /** @var DeltaCMS\Classes\Controller $controller */
+        /** @var \DeltaCMS\Controller $controller */
         $controller = new $value->controller();
         // dd(new $routeArgs->controller());
-        if ($composants) {
-            $controller->setUrlArguments($composants);
-        }
+        $controller->setUrlArguments($composants);
         // if(isset($json->templateFolder)) $controller->loadTwig($json->templateFolder);
         echo $controller->$function();
         die;
diff --git a/src/DeltaCMS/Cache/FileCache.php b/src/DeltaCMS/Cache/FileCache.php
index f1b6fee..95c2295 100644
--- a/src/DeltaCMS/Cache/FileCache.php
+++ b/src/DeltaCMS/Cache/FileCache.php
@@ -2,6 +2,8 @@
 
 namespace DeltaCMS\Cache;
 
+use Exception;
+
 class FileCache extends AbstractCache
 {
     private $folder;
@@ -29,11 +31,16 @@ class FileCache extends AbstractCache
         }
         $file = $this->folder . DIRECTORY_SEPARATOR . $key;
         if (is_file($file)) {
-            $res = unserialize(file_get_contents($file));
-            if ($res["ttl"] > time() && $res['value'] !== null) {
-                return $res["value"];
+            $content = file_get_contents($file);
+            if ($content !== false) {
+                $res = unserialize($content);
+                if ($res["ttl"] > time() && $res['value'] !== null) {
+                    return $res["value"];
+                } else {
+                    $this->delete($key);
+                }
             } else {
-                $this->delete($key);
+                throw new Exception("Cache file couldn't be read", 1);
             }
         }
         return $default;
@@ -62,7 +69,11 @@ class FileCache extends AbstractCache
 
     public function clear()
     {
-        $keys = array_diff(scandir($this->folder), array("..", "."));
+        $files = scandir($this->folder);
+        if ($files === false) {
+            throw new Exception("couldn't clear cache, the folder seems unreadable", 1);
+        }
+        $keys = array_diff($files, array("..", "."));
         foreach ($keys as $key) {
             $this->delete($key);
         }
diff --git a/src/DeltaCMS/Controller.php b/src/DeltaCMS/Controller.php
index c142f0b..fe60890 100644
--- a/src/DeltaCMS/Controller.php
+++ b/src/DeltaCMS/Controller.php
@@ -8,7 +8,7 @@ class Controller
     protected $urlArguments = array();
     protected $moduleRoot = null;
 
-    /** @var \DeltaCMS\Cache\FileCache */
+    /** @var \Psr\SimpleCache\CacheInterface */
 
     protected $cache;
 
diff --git a/src/DeltaCMS/DeltaCMS.php b/src/DeltaCMS/DeltaCMS.php
index 0f1ba9f..6c93b1d 100644
--- a/src/DeltaCMS/DeltaCMS.php
+++ b/src/DeltaCMS/DeltaCMS.php
@@ -27,8 +27,6 @@ class DeltaCMS
     /**
      * Get actual DeltaCMS instance
      *
-     * @param array $settings
-     * Settings to set to the software
      *
      * @return DeltaCMS
      */
@@ -53,12 +51,8 @@ class DeltaCMS
         return isset($this->logger) ? $this->logger : $this->logger = new Logger(dirname($this->root));
     }
 
-    /** @var \Twig\Loader\FileSystemLoader $loader */
+    /** @var \Twig\Loader\FilesystemLoader $loader */
     private $loader;
-    // private function setLoader(FilesystemLoader $loader)
-    // {
-    //     $this->loader = $loader;
-    // }
 
     public function addLoaderFolder(string $path, string $prefix = "DeltaCMS")
     {
diff --git a/src/DeltaCMS/Enum.php b/src/DeltaCMS/Enum.php
index e52fff9..8803ac1 100644
--- a/src/DeltaCMS/Enum.php
+++ b/src/DeltaCMS/Enum.php
@@ -2,6 +2,8 @@
 
 namespace DeltaCMS;
 
+use ReflectionClass;
+
 abstract class Enum
 {
     /** @var null|array $constCacheArray */
diff --git a/src/DeltaCMS/Form.php b/src/DeltaCMS/Form.php
index e53b5bf..8dafad8 100644
--- a/src/DeltaCMS/Form.php
+++ b/src/DeltaCMS/Form.php
@@ -39,7 +39,7 @@ class Form
             $adder = "add" . ucfirst($name);
             $value = filter_input(INPUT_POST, $name);
             $field = $this->getField($settings->type);
-            $value = $field->processValue($value, $settings);
+            $value = $field->getValue();
             if (is_callable(array($entity, $setter))) {
                 $entity->$setter($value);
             } elseif (is_callable(array($entity, $adder))) {
@@ -86,7 +86,7 @@ class Form
             $form = $forms[$formname];
             $this->fields = $form->fields;
             // dd($this->fields);
-            if ($this->isSubmitting($this->fields)) {
+            if ($this->isSubmitting()) {
                 if ($entity !== null) {
                     $this->putFieldsInEntity(
                         $entity,
diff --git a/src/DeltaCMS/Form/ArrayInput.php b/src/DeltaCMS/Form/ArrayInput.php
index 46fc433..b37559f 100644
--- a/src/DeltaCMS/Form/ArrayInput.php
+++ b/src/DeltaCMS/Form/ArrayInput.php
@@ -7,6 +7,7 @@ class ArrayInput extends AbstractInput
 
     public function __construct()
     {
+        parent::__construct();
         $this->options = array(
             'elements' => array()
         );
diff --git a/src/DeltaCMS/Form/EntityInput.php b/src/DeltaCMS/Form/EntityInput.php
index 4dcabb1..942e8c6 100644
--- a/src/DeltaCMS/Form/EntityInput.php
+++ b/src/DeltaCMS/Form/EntityInput.php
@@ -8,6 +8,7 @@ class EntityInput extends AbstractInput
 {
     public function __construct()
     {
+        parent::__construct();
         $this->setOption("type", "text");
     }
 
diff --git a/src/DeltaCMS/Form/Input.php b/src/DeltaCMS/Form/Input.php
index 9491cae..1aa3a91 100644
--- a/src/DeltaCMS/Form/Input.php
+++ b/src/DeltaCMS/Form/Input.php
@@ -15,7 +15,7 @@ interface Input
     /**
      * get options that will be passed into the final object
      *
-     * @return void
+     * @return array
      */
     public function getAttributes(): array;
 
@@ -29,7 +29,7 @@ interface Input
     /**
      * get options that will be passed into the final object
      *
-     * @return void
+     * @return array
      */
     public function getOptions(): array;
 
diff --git a/src/DeltaCMS/Functions.php b/src/DeltaCMS/Functions.php
index cd22c51..815a353 100644
--- a/src/DeltaCMS/Functions.php
+++ b/src/DeltaCMS/Functions.php
@@ -1,4 +1,5 @@
 <?php
+use PHPUnit\Runner\Exception;
 
 function startsWith($haystack, $needle)
 {
@@ -11,7 +12,7 @@ function startsWith($haystack, $needle)
  * @param string $slug
  * @param object $options options->regex &| options->setting
  *
- * @return bool|array
+ * @return bool|stdClass
  */
 function slugEqualToURI($slug, $uri, $options)
 {
@@ -49,14 +50,17 @@ function slugEqualToURI($slug, $uri, $options)
 
 function jsonc_decode($filename, $assoc = false, $depth = 512, $options = 0)
 {
-    return json_decode(
-        preg_replace(
-            '![ \t]*//.*[ \t]*[\r\n]!',
-            '',
-            file_get_contents($filename)
-        ),
-        $assoc,
-        $depth,
-        $options
+    $fileContent = file_get_contents($filename);
+    if ($fileContent === false) {
+        throw new Exception("File" . $filename . " is not readable or not existing", 1);
+    }
+    $fileContent = preg_replace(
+        '![ \t]*//.*[ \t]*[\r\n]!',
+        '',
+        $fileContent
     );
+    if ($fileContent === null) {
+        throw new Exception("An error occured", 1);
+    }
+    return json_decode($fileContent, $assoc, $depth, $options);
 }
diff --git a/src/DeltaCMS/Logger.php b/src/DeltaCMS/Logger.php
index 83f9943..9a7d01d 100644
--- a/src/DeltaCMS/Logger.php
+++ b/src/DeltaCMS/Logger.php
@@ -5,6 +5,8 @@ namespace DeltaCMS;
 use Psr\Log\AbstractLogger;
 use Psr\Log\InvalidArgumentException;
 
+use Exception;
+
 class Logger extends AbstractLogger
 {
 
@@ -26,7 +28,11 @@ class Logger extends AbstractLogger
     public function __construct($file = "./logs.log")
     {
         if (!file_exists($file)) {
-            fclose(fopen($file, 'w'));
+            $ressource = fopen($file, 'w');
+            if ($ressource === false) {
+                throw new Exception("File at " . $file . " can't be created. exiting", 1);
+            }
+            fclose($ressource);
         }
         $this->file = $file;
     }
diff --git a/tests/LoggerTest.php b/tests/LoggerTest.php
index 7e75e69..61b17f6 100644
--- a/tests/LoggerTest.php
+++ b/tests/LoggerTest.php
@@ -1,9 +1,12 @@
 <?php
 
+namespace Tests;
+
 use PHPUnit\Framework\TestCase;
 use DeltaCMS\Cache\FileCache;
 use DeltaCMS\Logger;
 use Psr\Log\InvalidArgumentException;
+use Exception;
 
 final class LoggerTest extends TestCase
 {
diff --git a/tests/SessionCacheTest.php b/tests/SessionCacheTest.php
index c8213bb..40a18f5 100644
--- a/tests/SessionCacheTest.php
+++ b/tests/SessionCacheTest.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests;
+
 use PHPUnit\Framework\TestCase;
 use DeltaCMS\Cache\SessionCache;