}

func TestMergeDNSOptions(t *testing.T) {
	testOptionValue := "3"

	testCases := []struct {
		desc                     string
		existingDNSConfigOptions []string
		dnsConfigOptions         []v1.PodDNSConfigOption
		expectedOptions          []string
	}{
		{
			desc:                     "Empty dnsConfigOptions",
			existingDNSConfigOptions: []string{"ndots:5", "debug"},
			dnsConfigOptions:         nil,

	return podDNSCluster, fmt.Errorf("invalid DNSPolicy=%v", dnsPolicy)
}

// mergeDNSOptions merges DNS options. If duplicated, entries given by PodDNSConfigOption will
// overwrite the existing ones.
func mergeDNSOptions(existingDNSConfigOptions []string, dnsConfigOptions []v1.PodDNSConfigOption) []string {
	optionsMap := make(map[string]string)
	for _, op := range existingDNSConfigOptions {
		if index := strings.Index(op, ":"); index != -1 {