try unit test creating csv -not working

tests/UnitTest.php

@@ -0,0 +1,23 @@
+<?php
+
+use Tests\TestCase;
+use App\Http\Controllers\GiteaApiController;
+use Laravel\Lumen\Testing\DatabaseMigrations;
+use Laravel\Lumen\Testing\DatabaseTransactions;
+
+class UnitTest extends TestCase
+{
+    public function test_export_endpoint_works_for_logged_in_users()
+    {
+        $res = $this->post('/export', array(
+            'token' => getenv('GITEA_TOKEN'),
+            'from_month' => '10',
+            'from_year' => '2023',
+            'to_month' => '12',
+            'to_year' => '2023'
+        ));
+
+        $res->assertResponseOk();
+        //dd($res);
+    }
+}