err = r.Snapshot(&dst)
	if err != nil {
		t.Fatal(err)
	}

	pr2, err := net.ParsePortRange(dst.Range)
	if err != nil {
		t.Fatal(err)
	}

	if pr.String() != pr2.String() {
		t.Fatalf("mismatched networks: %s : %s", pr, pr2)
	}

	otherPr, err := net.ParsePortRange("200-300")
	if err != nil {
		t.Fatal(err)
	}
	_, err = NewInMemory(*otherPr)
	if err != nil {

}

func TestRepair(t *testing.T) {
	clearMetrics()
	fakeClient := fake.NewSimpleClientset()
	registry := &mockRangeRegistry{
		item: &api.RangeAllocation{Range: "100-200"},
	}
	pr, _ := net.ParsePortRange(registry.item.Range)
	r := NewRepair(0, fakeClient.CoreV1(), fakeClient.EventsV1(), *pr, registry)

	if err := r.runOnce(); err != nil {
		t.Fatal(err)
	}

	return false
}

// parsePortRange parse the begin and end port from a raw string(format: a-b).  beginPort <= endPort
// in the return value.
func parsePortRange(portRange string) (beginPort int, endPort int, err error) {
	if len(portRange) == 0 {
		portRange = DefaultPortRange
	}

	})
}

// NewFromSnapshot allocates a PortAllocator and initializes it from a snapshot.
func NewFromSnapshot(snap *api.RangeAllocation) (*PortAllocator, error) {
	pr, err := net.ParsePortRange(snap.Range)
	if err != nil {
		return nil, err
	}
	r, err := NewInMemory(*pr)
	if err != nil {
		return nil, err
	}
	if err := r.Restore(*pr, snap.Data); err != nil {
		return nil, err
	}

				allErrs = append(allErrs, field.Invalid(newPath.Child("ClusterCIDR"), config.ClusterCIDR, "must be a valid CIDR block (e.g. 10.100.0.0/16 or fde4:8dba:82e1::/48)"))
			}
		}
	}

	if _, err := utilnet.ParsePortRange(config.PortRange); err != nil {
		allErrs = append(allErrs, field.Invalid(newPath.Child("PortRange"), config.PortRange, "must be a valid port range (e.g. 300-2000)"))
	}

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