MemoryDataCollector example

namespace Symfony\Component\HttpKernel\Tests\DataCollector;

use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\DataCollector\MemoryDataCollector;

class MemoryDataCollectorTest extends TestCase
{
    public function testCollect()
    {
        $collector = new MemoryDataCollector();
        $collector->collect(new Request(), new Response());

        $this->assertIsInt($collector->getMemory());
        $this->assertIsInt($collector->getMemoryLimit());
        $this->assertSame('memory', $collector->getName());
    }

    /** @dataProvider getBytesConversionTestData */
    public function testBytesConversion($limit, $bytes)
    {
        $collector = new MemoryDataCollector();