Input validation return empty array

What? It work.
 

PHP Code:

  public function index(): string
    {
        $this->request->setGlobal('post', [
            'record'    => '1000',
            'record_id' => '1005',
            'region'    => '-1008',
        ]);
        $rules = [
            'record'    => 'alpha_numeric_punct',
            'record_id' => 'is_natural_no_zero',
            'region'    => 'is_natural_no_zero',
        ];

        $data = $this->request->getPost(array_keys($rules));

        if (! $this->validateData($data, $rules)) {
            $errors = $this->validator->getErrors();
        }

        $validData = $this->validator->getValidated();

        $data['validated'] = $validData;
        $data['errors'] = $errors ?? [];
        var_dump($data); exit;
    } 


Code:

array(5) {
  ["record"]=>
  string(4) "1000"
  ["record_id"]=>
  string(4) "1005"
  ["region"]=>
  string(5) "-1008"
  ["validated"]=>
  array(0) {
  }
  ["errors"]=>
  array(1) {
    ["region"]=>
    string(72) "The region field must only contain digits and must be greater than zero."
  }
}

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