diff --git a/composer.json b/composer.json
index a3fa6d04c..ba9b487c0 100755
--- a/composer.json
+++ b/composer.json
@@ -67,6 +67,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.53",
+        "phpunit/phpunit": "^11.5",
         "rector/rector": "^1.0"
     },
     "autoload": {
diff --git a/tests/GeneratorTest.php b/tests/GeneratorTest.php
new file mode 100644
index 000000000..a5d41eae8
--- /dev/null
+++ b/tests/GeneratorTest.php
@@ -0,0 +1,70 @@
+<?php
+
+use Util\Generator;
+
+class GeneratorTest extends \PHPUnit\Framework\TestCase
+{
+    public function testNumbersWithPrefix()
+    {
+        $this->test(null, '|TEST');
+    }
+
+    public function testNumbersWithSuffix()
+    {
+        $this->test('|TEST');
+    }
+
+    public function testCommonNumbers()
+    {
+        $this->test();
+    }
+
+    public function testDates()
+    {
+        $this->test('/YYYY');
+        $this->test('/yy');
+
+        $this->test(null, 'YYYY-');
+        $this->test(null, 'yy-');
+    }
+
+    protected function test($prefix = null, $suffix = null)
+    {
+        $date = date('Y-m-d H:i:s');
+        $info = Generator::dateToPattern($date);
+
+        // Individuazione valori relativi a suffisso e prefisso
+        $prefix_value = Generator::complete($prefix, $info);
+        $suffix_value = Generator::complete($suffix, $info);
+
+        $step = 3;
+
+        // Pattern di base con numero di caratteri incrementale
+        $pattern = $prefix.'#'.$suffix;
+
+        $previous = null;
+        for ($i = 0; $i < 10000; $i = $i + $step) {
+            $value = $prefix_value.$this->pad($i + 1, $length).$suffix_value;
+            $this->assertEquals($value, Generator::generate($pattern, $previous, $step, $info));
+
+            $previous = $value;
+        }
+
+        // Pattern con padding
+        $length = 5;
+        $pattern = $prefix.str_repeat('#', $length).$suffix;
+
+        $previous = null;
+        for ($i = 0; $i < 10000; $i = $i + $step) {
+            $value = $prefix_value.$this->pad($i + 1, $length).$suffix_value;
+            $this->assertEquals($value, Generator::generate($pattern, $previous, $step, $info));
+
+            $previous = $value;
+        }
+    }
+
+    protected function pad($number, $length)
+    {
+        return str_pad($number, $length, '0', STR_PAD_LEFT);
+    }
+}
\ No newline at end of file
diff --git a/tests/_bootstrap.php b/tests/_bootstrap.php
new file mode 100644
index 000000000..cbcb837df
--- /dev/null
+++ b/tests/_bootstrap.php
@@ -0,0 +1,10 @@
+<?php
+
+use Codeception\Util\Autoload;
+
+// Caricamento delle dipendenze e delle librerie del progetto
+$namespaces = require_once __DIR__.'/../config/namespaces.php';
+foreach ($namespaces as $path => $namespace) {
+    Autoload::addNamespace($namespace.'\\', __DIR__.'/../'.$path.'/custom/src');
+    Autoload::addNamespace($namespace.'\\', __DIR__.'/../'.$path.'/src');
+}
\ No newline at end of file