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ipset_test.go
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package netaddr
import (
"math/big"
"math/rand"
"net"
"testing"
"github.com/stretchr/testify/assert"
)
var (
Eights = net.ParseIP("8.8.8.8").To4()
Nines = net.ParseIP("9.9.9.9").To4()
Ten24, _ = ParseNet("10.0.0.0/24")
Ten24128, _ = ParseNet("10.0.0.128/25")
Ten24Router = net.ParseIP("10.0.0.1").To4()
Ten24Broadcast = net.ParseIP("10.0.0.255").To4()
V6Net1, _ = ParseNet("2001:db8:1234:abcd::/64")
V6Net2, _ = ParseNet("2001:db8:abcd:1234::/64")
V6Net1Router = net.ParseIP("2001:db8:1234:abcd::1")
V6NetSize = big.NewInt(0).Lsh(big.NewInt(1), 64) // 2**64 or 18446744073709551616
)
func TestNetDifference(t *testing.T) {
diff := netDifference(Ten24, Ten24128)
cidr, _ := ParseNet("10.0.0.0/25")
assert.Equal(t, []*net.IPNet{cidr}, diff)
cidr, _ = ParseNet("10.0.0.120/29")
diff = netDifference(Ten24, cidr)
cidr1, _ := ParseNet("10.0.0.128/25")
cidr2, _ := ParseNet("10.0.0.0/26")
cidr3, _ := ParseNet("10.0.0.64/27")
cidr4, _ := ParseNet("10.0.0.96/28")
cidr5, _ := ParseNet("10.0.0.112/29")
assert.Equal(t, []*net.IPNet{cidr1, cidr2, cidr3, cidr4, cidr5}, diff)
}
func TestIPSetInit(t *testing.T) {
set := IPSet{}
assert.Equal(t, big.NewInt(0), set.tree.size())
}
func TestIPSetContains(t *testing.T) {
set := IPSet{}
assert.Equal(t, big.NewInt(0), set.tree.size())
assert.False(t, set.Contains(Eights))
assert.False(t, set.Contains(Nines))
}
func TestIPSetInsert(t *testing.T) {
set := IPSet{}
set.Insert(Nines)
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, big.NewInt(1), set.tree.size())
assert.True(t, set.Contains(Nines))
assert.False(t, set.Contains(Eights))
set.Insert(Eights)
assert.Equal(t, 2, set.tree.numNodes())
assert.True(t, set.Contains(Eights))
}
func TestIPSetInsertNetwork(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24)
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, big.NewInt(256), set.tree.size())
assert.True(t, set.ContainsNet(Ten24))
assert.True(t, set.ContainsNet(Ten24128))
assert.False(t, set.Contains(Nines))
assert.False(t, set.Contains(Eights))
}
func TestIPSetInsertMixed(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24)
assert.Equal(t, 1, set.tree.numNodes())
set.Insert(Eights)
set.Insert(Nines)
set.Insert(Ten24Router)
assert.Equal(t, 3, set.tree.numNodes())
assert.Equal(t, big.NewInt(258), set.tree.size())
assert.True(t, set.ContainsNet(Ten24))
assert.True(t, set.ContainsNet(Ten24128))
assert.True(t, set.Contains(Ten24Router))
assert.True(t, set.Contains(Eights))
assert.True(t, set.Contains(Nines))
}
func TestIPSetInsertSequential(t *testing.T) {
set := IPSet{}
set.Insert(net.ParseIP("192.168.1.0").To4())
assert.Equal(t, 1, set.tree.numNodes())
set.Insert(net.ParseIP("192.168.1.1").To4())
assert.Equal(t, 1, set.tree.numNodes())
set.Insert(net.ParseIP("192.168.1.2").To4())
assert.Equal(t, 2, set.tree.numNodes())
set.Insert(net.ParseIP("192.168.1.3").To4())
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, big.NewInt(4), set.tree.size())
cidr, _ := ParseNet("192.168.1.0/30")
assert.True(t, set.ContainsNet(cidr))
cidr, _ = ParseNet("192.168.1.4/31")
set.InsertNet(cidr)
assert.Equal(t, 2, set.tree.numNodes())
assert.True(t, set.ContainsNet(cidr))
cidr, _ = ParseNet("192.168.1.6/31")
set.InsertNet(cidr)
assert.Equal(t, 1, set.tree.numNodes())
assert.True(t, set.ContainsNet(cidr))
cidr, _ = ParseNet("192.168.1.6/31")
set.InsertNet(cidr)
assert.Equal(t, 1, set.tree.numNodes())
assert.True(t, set.ContainsNet(cidr))
cidr, _ = ParseNet("192.168.0.240/29")
set.InsertNet(cidr)
assert.Equal(t, 2, set.tree.numNodes())
assert.True(t, set.ContainsNet(cidr))
cidr, _ = ParseNet("192.168.0.248/29")
set.InsertNet(cidr)
assert.Equal(t, 2, set.tree.numNodes())
assert.True(t, set.ContainsNet(cidr))
}
func TestIPSetRemove(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24)
assert.Equal(t, 1, set.tree.numNodes())
set.RemoveNet(Ten24128)
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, big.NewInt(128), set.tree.size())
assert.False(t, set.ContainsNet(Ten24))
assert.False(t, set.ContainsNet(Ten24128))
cidr, _ := ParseNet("10.0.0.0/25")
assert.True(t, set.ContainsNet(cidr))
set.Remove(Ten24Router)
assert.Equal(t, big.NewInt(127), set.tree.size())
assert.Equal(t, 7, set.tree.numNodes())
}
func TestIPSetRemoveNetworkBroadcast(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24)
assert.Equal(t, 1, set.tree.numNodes())
set.Remove(Ten24.IP)
set.Remove(Ten24Broadcast)
assert.Equal(t, big.NewInt(254), set.tree.size())
assert.Equal(t, 14, set.tree.numNodes())
assert.False(t, set.ContainsNet(Ten24))
assert.False(t, set.ContainsNet(Ten24128))
assert.False(t, set.Contains(Ten24Broadcast))
assert.False(t, set.Contains(Ten24.IP))
cidr, _ := ParseNet("10.0.0.128/26")
assert.True(t, set.ContainsNet(cidr))
assert.True(t, set.Contains(Ten24Router))
set.Remove(Ten24Router)
assert.Equal(t, big.NewInt(253), set.tree.size())
assert.Equal(t, 13, set.tree.numNodes())
}
func TestIPSetRemoveAll(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24)
cidr1, _ := ParseNet("192.168.0.0/25")
set.InsertNet(cidr1)
assert.Equal(t, 2, set.tree.numNodes())
cidr2, _ := ParseNet("0.0.0.0/0")
set.RemoveNet(cidr2)
assert.Equal(t, 0, set.tree.numNodes())
assert.False(t, set.ContainsNet(Ten24))
assert.False(t, set.ContainsNet(Ten24128))
assert.False(t, set.ContainsNet(cidr1))
}
func TestIPSetInsertOverlapping(t *testing.T) {
set := IPSet{}
set.InsertNet(Ten24128)
assert.False(t, set.ContainsNet(Ten24))
assert.Equal(t, 1, set.tree.numNodes())
set.InsertNet(Ten24)
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, big.NewInt(256), set.tree.size())
assert.True(t, set.ContainsNet(Ten24))
assert.True(t, set.Contains(Ten24Router))
assert.False(t, set.Contains(Eights))
assert.False(t, set.Contains(Nines))
}
func TestIPSetUnion(t *testing.T) {
set1, set2 := &IPSet{}, &IPSet{}
set1.InsertNet(Ten24)
cidr, _ := ParseNet("192.168.0.248/29")
set2.InsertNet(cidr)
set := set1.Union(set2)
assert.True(t, set.ContainsNet(Ten24))
assert.True(t, set.ContainsNet(cidr))
}
func TestIPSetDifference(t *testing.T) {
set1, set2 := &IPSet{}, &IPSet{}
set1.InsertNet(Ten24)
cidr, _ := ParseNet("192.168.0.248/29")
set2.InsertNet(cidr)
set := set1.Difference(set2)
assert.True(t, set.ContainsNet(Ten24))
assert.False(t, set.ContainsNet(cidr))
}
func TestIntersectionAinB1(t *testing.T) {
case1 := []string{"10.0.16.0/20", "10.5.8.0/24", "10.23.224.0/23"}
case2 := []string{"10.0.20.0/30", "10.5.8.0/29", "10.23.224.0/27"}
output := []string{"10.23.224.0/27", "10.0.20.0/30", "10.5.8.0/29"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB2(t *testing.T) {
case1 := []string{"10.10.0.0/30", "10.5.8.0/29", "10.23.224.0/27"}
case2 := []string{"10.10.0.0/20", "10.5.8.0/24", "10.23.224.0/23"}
output := []string{"10.10.0.0/30", "10.5.8.0/29", "10.23.224.0/27"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB3(t *testing.T) {
case1 := []string{"10.0.5.0/24", "10.5.8.0/29", "10.23.224.0/27"}
case2 := []string{"10.6.0.0/24", "10.9.9.0/29", "10.23.6.0/23"}
output := []string{}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB4(t *testing.T) {
case1 := []string{"10.23.6.0/24", "10.5.8.0/29", "10.23.224.0/27"}
case2 := []string{"10.6.0.0/24", "10.9.9.0/29", "10.23.6.0/29"}
output := []string{"10.23.6.0/29"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB5(t *testing.T) {
case1 := []string{"2001:db8:0:23::/96", "2001:db8:0:20::/96", "2001:db8:0:15::/96"}
case2 := []string{"2001:db8:0:23::/64", "2001:db8:0:20::/64", "2001:db8:0:15::/64"}
output := []string{"2001:db8:0:23::/96", "2001:db8:0:20::/96", "2001:db8:0:15::/96"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB6(t *testing.T) {
case1 := []string{"2001:db8:0:23::/64", "2001:db8:0:20::/64", "2001:db8:0:15::/64"}
case2 := []string{"2001:db8:0:23::/96", "2001:db8:0:20::/96", "2001:db8:0:15::/96"}
output := []string{"2001:db8:0:15::/96", "2001:db8:0:20::/96", "2001:db8:0:23::/96"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB7(t *testing.T) {
case1 := []string{"2001:db8:0:23::/64", "2001:db8:0:20::/64", "2001:db8:0:15::/64"}
case2 := []string{"2001:db8:0:14::/96", "2001:db8:0:10::/96", "2001:db8:0:8::/96"}
output := []string{}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB8(t *testing.T) {
case1 := []string{"2001:db8:0:23::/64", "2001:db8:0:20::/64", "172.16.1.0/24"}
case2 := []string{"2001:db9:0:14::/96", "2001:db9:0:10::/96", "172.16.1.0/28"}
output := []string{"172.16.1.0/28"}
testIntersection(t, case1, case2, output)
}
func TestIntersectionAinB9(t *testing.T) {
case1 := []string{"10.5.8.0/29"}
case2 := []string{"10.10.0.0/20", "10.5.8.0/24", "10.23.224.0/23"}
output := []string{"10.5.8.0/29"}
testIntersection(t, case1, case2, output)
}
func testIntersection(t *testing.T, input1 []string, input2 []string, output []string) {
set1, set2, interSect := &IPSet{}, &IPSet{}, &IPSet{}
for i := 0; i < len(input1); i++ {
cidr, _ := ParseNet(input1[i])
set1.InsertNet(cidr)
}
for j := 0; j < len(input2); j++ {
cidr, _ := ParseNet(input2[j])
set2.InsertNet(cidr)
}
for k := 0; k < len(output); k++ {
cidr, _ := ParseNet(output[k])
interSect.InsertNet(cidr)
}
set := set1.Intersection(set2)
s1 := set.String()
intSect := interSect.String()
if !assert.Equal(t, intSect, s1) {
t.Logf("\nEXPECTED: %s\nACTUAL: %s\n", intSect, s1)
}
}
func TestIPSetInsertV6(t *testing.T) {
set := IPSet{}
set.InsertNet(V6Net1)
assert.Equal(t, 1, set.tree.numNodes())
set.Insert(V6Net1Router)
assert.Equal(t, 1, set.tree.numNodes())
assert.Equal(t, V6NetSize, set.tree.size())
assert.True(t, set.ContainsNet(V6Net1))
assert.False(t, set.ContainsNet(V6Net2))
assert.False(t, set.Contains(Ten24Router))
assert.True(t, set.Contains(V6Net1Router))
assert.False(t, set.Contains(Eights))
assert.False(t, set.Contains(Nines))
set.InsertNet(V6Net2)
assert.Equal(t, 2, set.tree.numNodes())
assert.True(t, set.ContainsNet(V6Net1))
assert.True(t, set.ContainsNet(V6Net2))
assert.Equal(t, big.NewInt(0).Mul(big.NewInt(2), V6NetSize), set.tree.size())
}
func TestIPSetAllocateDeallocate(t *testing.T) {
rand.Seed(29)
set := IPSet{}
bigNet, _ := ParseNet("15.1.0.0/16")
set.InsertNet(bigNet)
ips := set.GetIPs(0)
assert.Equal(t, 65536, len(ips))
assert.Equal(t, big.NewInt(65536), set.tree.size())
allocated := &IPSet{}
for i := 0; i != 16384; i++ {
allocated.Insert(ips[rand.Intn(65536)])
}
assert.Equal(t, big.NewInt(14500), allocated.tree.size())
ips = allocated.GetIPs(0)
assert.Equal(t, 14500, len(ips))
for _, ip := range ips {
assert.True(t, set.Contains(ip))
}
available := set.Difference(allocated)
assert.Equal(t, big.NewInt(51036), available.tree.size())
ips = available.GetIPs(0)
for _, ip := range ips {
assert.True(t, set.Contains(ip))
assert.False(t, allocated.Contains(ip))
}
assert.Equal(t, 51036, len(ips))
}