/**
  * @dataProvider passwordProvider
  * @covers el_api_v1\passwordHash::unique_salt
  * @todo   Implement testUnique_salt22RandomCharacters().
  */
 public function testUnique_saltHas22RandomCharacters()
 {
     $uniqueSalt = $this->object->unique_salt();
     $format = '%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c';
     $this->assertStringMatchesFormat($format, $uniqueSalt);
 }