ProblemNormalizer example

use Symfony\Component\Serializer\Serializer;
use Symfony\Component\Validator\ConstraintViolation;
use Symfony\Component\Validator\ConstraintViolationList;
use Symfony\Component\Validator\Exception\ValidationFailedException;

class ProblemNormalizerTest extends TestCase
{
    private ProblemNormalizer $normalizer;

    protected function setUp(): void
    {
        $this->normalizer = new ProblemNormalizer(false);
    }

    public function testSupportNormalization()
    {
        $this->assertTrue($this->normalizer->supportsNormalization(FlattenException::createFromThrowable(new \Exception())));
        $this->assertFalse($this->normalizer->supportsNormalization(new \Exception()));
        $this->assertFalse($this->normalizer->supportsNormalization(new \stdClass()));
    }

    public function testNormalize()
    {
        

public function testDefaultContent()
    {
        $errorRenderer = new SerializerErrorRenderer(new Serializer(), 'html');

        self::assertStringContainsString('<h2>The server returned a "500 Internal Server Error".</h2>', $errorRenderer->render(new \RuntimeException())->getAsString());
    }

    public function testSerializerContent()
    {
        $exception = new \RuntimeException('Foo');
        $errorRenderer = new SerializerErrorRenderer(
            new Serializer([new ProblemNormalizer()], [new JsonEncoder()]),
            fn () => 'json'
        );

        $this->assertSame('{"type":"https:\/\/tools.ietf.org\/html\/rfc2616#section-10","title":"An error occurred","status":500,"detail":"Internal Server Error"}', $errorRenderer->render($exception)->getAsString());
    }
}