add tests

tests/Helpers/Traits/MakeCliApplication.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Helpers\Traits;
+
+use Ahc\Cli\Application;
+
+trait MakeCliApplication
+{
+    protected function makeCliApp(): Application
+    {
+        $cliApp = new \Ahc\Cli\Application('test', '0.0.1', static fn () => true);
+        $cliApp->onException(static function (\Throwable $exception): void {
+            throw $exception;
+        });
+
+        return $cliApp;
+    }
+}