}

// GetVersion returns the version string.
func (runner *runner) GetVersion() (string, error) {
	return getIPSetVersionString(runner.exec)
}

// getIPSetVersionString runs "ipset --version" to get the version string
// in the form of "X.Y", i.e "6.19"
func getIPSetVersionString(exec utilexec.Interface) (string, error) {
	cmd := exec.Command(IPSetCmd, "--version")
	cmd.SetStdin(bytes.NewReader([]byte{}))

		fexec := &fakeexec.FakeExec{
			CommandScript: []fakeexec.FakeCommandAction{
				func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
			},
		}

		gotVersion, err := getIPSetVersionString(fexec)
		if (err != nil) != testCases[i].Err {
			t.Errorf("Expected error: %v, Got error: %v", testCases[i].Err, err)
		}
		if err == nil {
			if testCases[i].Expect != gotVersion {