use Symfony\Component\Intl\Util\IntlTestHelper;
use Symfony\Component\Validator\Constraints\Range;
use Symfony\Component\Validator\Constraints\RangeValidator;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;
class RangeValidatorTest extends ConstraintValidatorTestCase
{ protected function createValidator(): RangeValidator
{ return new RangeValidator();
} public function testNullIsValid() { $this->validator->
validate(null,
new Range(['min' => 10, 'max' => 20
]));
$this->
assertNoViolation();
} public static function getTenToTwenty() {