}
	}
	// check set type
	if err := validateIPSetType(set.SetType); err != nil {
		return err
	}
	// check port range for bitmap type set
	if set.SetType == BitmapPort {
		if err := validatePortRange(set.PortRange); err != nil {
			return err
		}
	}
	// check hash size value of ipset
	if set.HashSize <= 0 {
		return fmt.Errorf("invalid HashSize: %d", set.HashSize)
	}

		},
		{ // case[13]
			portRange: "-1--8",
			expectErr: true,
			desc:      "port number can not be negative value",
		},
	}
	for i := range testCases {
		err := validatePortRange(testCases[i].portRange)
		if err != nil {
			if !testCases[i].expectErr {
				t.Errorf("case [%d]: unexpected mismatch, expect error[%v], got error[%v], desc: %s", i, testCases[i].expectErr, err, testCases[i].desc)
			}