PHPUnit and extended class

Hello, I am testing PHPunit with CI4.

I run a test on HTTP testing (to test routes), so my classe extends "FeatureTestCase"

And when I run my test, PHPUNIT says : 

Code:

1) Warning

No tests found in class "CodeIgniter\Test\FeatureTestCase".

This is my test class :

PHP Code:

<?php

namespace App;

use CodeIgniter\Test\FeatureTestCase;

class TestUrlExists extends FeatureTestCase
{
    public function setUp(): void
    {
        parent::setUp();
    }

    public function tearDown(): void
    {
        parent::tearDown();
    }

    public function testHome(){
        
        $result = $this->call('get', '/');        
        $this->assertTrue($result->isOK());

    }

    public function testContact(){        
        $result = $this->call('get', '/contact');        
        $this->assertTrue($result->isOK());
    }

} 


I just want to "exclude" the parent class from the code coverage, but I search everywhere, I didn't find. I think it's more touchy because it's not a file but a namespace...

Please, how can I exclude the framework's class from my test ?

Thanks