laracasts/Integrated - Access level to Laravel\Lumen\Testing\TestCase::seeInDatabase() must be public (as in class Laracasts\Integrated\Emulator)

Hi all

I've implemented "laracasts/Integrated", then I changed the TestCase.php to:

<?php

use Laracasts\Integrated\Extensions\Lumen as IntegrationTest;

class TestCase extends IntegrationTest
{
    /**
     * Creates the application.
     *
     * @return \Laravel\Lumen\Application
     */
    public function createApplication()
    {
        return require __DIR__.'/../bootstrap/app.php';
    }
}

then, my personal AgencyControllerTest test Class is:

<?php
namespace Tests\App\Api\V1\Controllers;

use Laravel\Lumen\Testing\DatabaseTransactions;
use TestCase;

class AgencyControllerTest extends TestCase
{
    /** @test **/
    public function index_status_code_should_be_200()
    {
        $this->visit('/agencies')->seeStatusCode(200);
    }
}

?>

but running phpunit I receive:

$ phpunit

Fatal error: Access level to Laravel\Lumen\Testing\TestCase::seeInDatabase() must be public (as in class Laracasts\Integrated\Emulator) in /Users/valentino/Desktop/gitwork/group__cat/flytsunamiws/vendor/laracasts/integrated/src/Extensions/Lumen.php on line 10


  [Symfony\Component\Debug\Exception\FatalErrorException]
  Access level to Laravel\Lumen\Testing\TestCase::seeInDatabase() must be public (as in class Laracasts\Integrated\Emulator)
$

Any idea?

The Lumen.php Class is:

<?php

namespace Laracasts\Integrated\Extensions;

use Laracasts\Integrated\Extensions\Traits\LaravelTestCase;
use Laravel\Lumen\Testing\TestCase;
use Laracasts\Integrated\Emulator;

abstract class Lumen extends TestCase implements Emulator
{
    use LaravelTestCase;
}

that extend TesCase.phpwhich contains:

protected function seeInDatabase($table, array $data, $onConnection = null)

that implement Emulator.php which contains:

public function seeInDatabase($table, array $data);

Is this normal?

Thank you for help.