private function validSpreadsheetFormat()
 {
     $message = "Esta planilha contem um formato inválido de acordo com os padrões definidos.";
     if (!$this->validator->spreadsheetHasAValidFormat()) {
         throw new WrongFormatException($message);
     }
 }
 /**
  * @test
  */
 public function invalidSpreadsheet()
 {
     $this->assertFalse($this->validator->spreadsheetHasAValidFormat());
 }