kilo/pkg/mesh/ip_test.go
Lucas Servén Marín 2603cd50db
pkg/mesh: fix ip allocator helper
This commit fixes the ip allocator `newAllocator` to produce IP
addresses with the original network mask. This is makes more sense. The
original functionality can be reproduced by wrapping the produced IP
address with the `oneAddressCIDR` helper.

Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
2020-02-20 13:54:11 +01:00

130 lines
2.8 KiB
Go

// Copyright 2019 the Kilo authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mesh
import (
"net"
"testing"
)
func TestNewAllocator(t *testing.T) {
_, c1, err := net.ParseCIDR("10.1.0.0/16")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
a1 := newAllocator(*c1)
_, c2, err := net.ParseCIDR("10.1.0.0/32")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
a2 := newAllocator(*c2)
_, c3, err := net.ParseCIDR("10.1.0.0/31")
if err != nil {
t.Fatalf("failed to parse CIDR: %v", err)
}
a3 := newAllocator(*c3)
for _, tc := range []struct {
name string
a *allocator
next string
}{
{
name: "10.1.0.0/16 first",
a: a1,
next: "10.1.0.1/16",
},
{
name: "10.1.0.0/16 second",
a: a1,
next: "10.1.0.2/16",
},
{
name: "10.1.0.0/32",
a: a2,
next: "<nil>",
},
{
name: "10.1.0.0/31 first",
a: a3,
next: "10.1.0.1/31",
},
{
name: "10.1.0.0/31 second",
a: a3,
next: "<nil>",
},
} {
next := tc.a.next()
if next.String() != tc.next {
t.Errorf("test case %q: expected %s, got %s", tc.name, tc.next, next.String())
}
}
}
func TestSortIPs(t *testing.T) {
ip1 := oneAddressCIDR(net.ParseIP("10.0.0.1"))
ip2 := oneAddressCIDR(net.ParseIP("10.0.0.2"))
ip3 := oneAddressCIDR(net.ParseIP("192.168.0.1"))
ip4 := oneAddressCIDR(net.ParseIP("2001::7"))
ip5 := oneAddressCIDR(net.ParseIP("fd68:da49:09da:b27f::"))
for _, tc := range []struct {
name string
ips []*net.IPNet
out []*net.IPNet
}{
{
name: "single",
ips: []*net.IPNet{ip1},
out: []*net.IPNet{ip1},
},
{
name: "IPv4s",
ips: []*net.IPNet{ip2, ip3, ip1},
out: []*net.IPNet{ip1, ip2, ip3},
},
{
name: "IPv4 and IPv6",
ips: []*net.IPNet{ip4, ip1},
out: []*net.IPNet{ip1, ip4},
},
{
name: "IPv6s",
ips: []*net.IPNet{ip5, ip4},
out: []*net.IPNet{ip4, ip5},
},
{
name: "all",
ips: []*net.IPNet{ip3, ip4, ip2, ip5, ip1},
out: []*net.IPNet{ip1, ip2, ip3, ip4, ip5},
},
} {
sortIPs(tc.ips)
equal := true
if len(tc.ips) != len(tc.out) {
equal = false
} else {
for i := range tc.ips {
if !ipNetsEqual(tc.ips[i], tc.out[i]) {
equal = false
break
}
}
}
if !equal {
t.Errorf("test case %q: expected %s, got %s", tc.name, tc.out, tc.ips)
}
}
}