How to test data using PHP unit and Symfony Command - php

Question

I'm trying to write a test class that tests when data is updated using the command in Symfony. But I don't know how to write a functional test. I need to know, which functions to write in the class UpdateTrackedContainerCommandTest, so that data was updated. In the documentation from Symfony I have not found any examples of it. Please, is there someone, who can give me some advice? I much appreciate any help.
Here is a command class in Symfony, that updates data through the command console:
#[AsCommand(
name: 'app:update-data',
description: 'Updating data',
hidden: false
)]
class UpdateDataCommand extends Command
{
private $repository;
private $apiService;
private $dbManager;
public function __construct(
Repository $repository,
ApiService $apiService,
DbManager $dbManager
) {
$this->repository = $repository;
$this->apiService = $apiService;
$this->dbManager = $dbManager;
parent::__construct();
}
protected function configure(): void
{
$this
->setHelp('This command allows you to update data...')
->setDescription('Updating data');
}
protected function execute(InputInterface $input, OutputInterface $output): int
{
$repositoryData = $this->repository->findAll();
$isUpdatedData = false;
foreach ($repositoryData as $dataRow) {
$apiData = $this->apiService->getApiData($dataRow->getReference())['result'] ?? null;
if ($apiData) {
foreach ($apiData['result'] as $key => $row) {
if ($row['id'] == $dataRow['id']) {
$dataRow[$key] = $row[$key];
$this->dbManager->persist($dataRow);
$isUpdatedData = true;
}
}
}
}
if ($isUpdatedData) {
$this->dbManager->flush();
}
return Command::SUCCESS;
}
}
Here is a test class in Symfony, that tests with PHP unit, that data was updated as expected:
class UpdateTrackedContainerCommandTest extends KernelTestCase
{
public function testExecute(): CommandTester
{
$kernel = self::bootKernel();
$application = new Application($kernel);
$command = $application->find('app:update-tracked-container');
$commandTester = new CommandTester($command);
$commandTester->execute([]);
$commandTester->assertCommandIsSuccessful();
return $commandTester;
}
}