getConfigurationAsString example

use PHPUnit\Framework\TestCase;
use Symfony\Component\Config\Definition\Dumper\XmlReferenceDumper;
use Symfony\Component\Config\Tests\Fixtures\Configuration\ExampleConfiguration;

class XmlReferenceDumperTest extends TestCase
{
    public function testDumper()
    {
        $configuration = new ExampleConfiguration();

        $dumper = new XmlReferenceDumper();
        $this->assertEquals($this->getConfigurationAsString(), $dumper->dump($configuration));
    }

    public function testNamespaceDumper()
    {
        $configuration = new ExampleConfiguration();

        $dumper = new XmlReferenceDumper();
        $this->assertEquals(str_replace('http://example.org/schema/dic/acme_root', 'http://symfony.com/schema/dic/symfony', $this->getConfigurationAsString()), $dumper->dump($configuration, 'http://symfony.com/schema/dic/symfony'));
    }

    private function getConfigurationAsString()
    {

use Symfony\Component\Config\Definition\Dumper\YamlReferenceDumper;
use Symfony\Component\Config\Tests\Fixtures\Configuration\ExampleConfiguration;

class YamlReferenceDumperTest extends TestCase
{
    public function testDumper()
    {
        $configuration = new ExampleConfiguration();

        $dumper = new YamlReferenceDumper();

        $this->assertEquals($this->getConfigurationAsString(), $dumper->dump($configuration));
    }

    public static function provideDumpAtPath(): array
    {
        return [
            'Regular node' => ['scalar_true', <<<EOL scalar_true: true EOL
            ],
            'Array node' => ['array', <<<EOL # some info array: child1: ~ child2: ~ # this is a long # multi-line info text # which should be indented child3: ~ # Example: 'example setting'