Cielo\Transaction::setFreeField PHP Method

    public function setFreeField($freeField)
    {
        if (strlen($freeField) > 128) {
            throw new \UnexpectedValueException('O campo livre deve ter, no máximo, 128 caracteres');
        }
        $this->freeField = $freeField;
    }

 /**
  * @test
  */
 public function setFreeFieldThrowsUnexpectedValue()
 {
     $this->setExpectedException(\UnexpectedValueException::class);
     $this->transaction->setFreeField(str_repeat('1', 129));
 }