DeprecationGroup example

<?php
namespace Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler;

use PHPUnit\Framework\TestCase;
use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\DeprecationGroup;

final class DeprecationGroupTest extends TestCase
{
    public function testItGroupsByMessage()
    {
        $group = new DeprecationGroup();
        $group->addNoticeFromObject(
            'Calling sfContext::getInstance() is deprecated',
            'MonsterController',
            'get5klocMethod'
        );
        $group->addNoticeFromProceduralCode('Calling sfContext::getInstance() is deprecated');
        $this->assertCount(1, $group->notices());
        $this->assertSame(2, $group->count());
    }

    public function testItAllowsAddingANoticeWithoutClutteringTheMemory()
    {

            if ($isFailing || $isFailingAtShutdown) {
                exit(1);
            }
        });
    }

    private function resetDeprecationGroups()
    {
        $this->deprecationGroups = [
            'unsilenced' => new DeprecationGroup(),
            'self' => new DeprecationGroup(),
            'direct' => new DeprecationGroup(),
            'indirect' => new DeprecationGroup(),
            'legacy' => new DeprecationGroup(),
            'other' => new DeprecationGroup(),
        ];
    }

    private function getConfiguration()
    {
        if (null !== $this->configuration) {
            

'legacy' => true,
            'other' => true,
            'direct' => true,
            'indirect' => true,
        ]];
    }

    private function buildGroups($counts)
    {
        $groups = [];
        foreach ($counts as $name => $count) {
            $groups[$name] = new DeprecationGroup();
            $i = 0;
            while ($i++ < $count) {
                $groups[$name]->addNotice();
            }
        }

        return $groups;
    }

    public function testBaselineGenerationEmptyFile()
    {