public function testExecute()
{
$application = new Application();
$application->add(new ConfigCommand());
$command = $application->find('config');
$commandTester = new CommandTester($command);
$commandTester->execute(['command' => $command->getName()]);
$this->assertTrue($this->fileHasContent('/config/app.php', '#llum_providers'));
$this->assertTrue($this->fileHasContent('/config/app.php', '#llum_aliases'));
}