BlankValidator example

namespace Symfony\Component\Validator\Tests\Constraints;

use Symfony\Component\Validator\Constraints\Blank;
use Symfony\Component\Validator\Constraints\BlankValidator;
use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;

class BlankValidatorTest extends ConstraintValidatorTestCase
{
    protected function createValidator(): BlankValidator
    {
        return new BlankValidator();
    }

    public function testNullIsValid()
    {
        $this->validator->validate(null, new Blank());

        $this->assertNoViolation();
    }

    public function testBlankIsValid()
    {
        
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