public function testToInternal()
 {
     $this->assertEquals('абв', $this->object->toInternal(iconv(self::INTERNAL_ENCODING, self::MORPHY_ENCODING, 'АБВ')));
 }
 /**
  * @param string $string
  * @return string
  */
 private function toInternalEncoding($string)
 {
     return $this->encoding_converter->toInternal($string);
 }