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package cidranger
import (
"encoding/json"
"io/ioutil"
"math/rand"
"net"
"testing"
"time"
"github.com/stretchr/testify/assert"
rnet "github.com/yl2chen/cidranger/net"
)
/*
******************************************************************
Test Contains/ContainingNetworks against basic brute force ranger.
******************************************************************
*/
func TestContainsAgainstBaseIPv4(t *testing.T) {
testContainsAgainstBase(t, 100000, randIPv4Gen)
}
func TestContainingNetworksAgaistBaseIPv4(t *testing.T) {
testContainingNetworksAgainstBase(t, 100000, randIPv4Gen)
}
func TestCoveredNetworksAgainstBaseIPv4(t *testing.T) {
testCoversNetworksAgainstBase(t, 100000, randomIPNetGenFactory(ipV4AWSRangesIPNets))
}
// IPv6 spans an extremely large address space (2^128), randomly generated IPs
// will often fall outside of the test ranges (AWS public CIDR blocks), so it
// it more meaningful for testing to run from a curated list of IPv6 IPs.
func TestContainsAgaistBaseIPv6(t *testing.T) {
testContainsAgainstBase(t, 100000, curatedAWSIPv6Gen)
}
func TestContainingNetworksAgaistBaseIPv6(t *testing.T) {
testContainingNetworksAgainstBase(t, 100000, curatedAWSIPv6Gen)
}
func TestCoveredNetworksAgainstBaseIPv6(t *testing.T) {
testCoversNetworksAgainstBase(t, 100000, randomIPNetGenFactory(ipV6AWSRangesIPNets))
}
func testContainsAgainstBase(t *testing.T, iterations int, ipGen ipGenerator) {
if testing.Short() {
t.Skip("Skipping memory test in `-short` mode")
}
rangers := []Ranger{NewPCTrieRanger()}
baseRanger := newBruteRanger()
for _, ranger := range rangers {
configureRangerWithAWSRanges(t, ranger)
}
configureRangerWithAWSRanges(t, baseRanger)
for i := 0; i < iterations; i++ {
nn := ipGen()
expected, err := baseRanger.Contains(nn.ToIP())
assert.NoError(t, err)
for _, ranger := range rangers {
actual, err := ranger.Contains(nn.ToIP())
assert.NoError(t, err)
assert.Equal(t, expected, actual)
}
}
}
func testContainingNetworksAgainstBase(t *testing.T, iterations int, ipGen ipGenerator) {
if testing.Short() {
t.Skip("Skipping memory test in `-short` mode")
}
rangers := []Ranger{NewPCTrieRanger()}
baseRanger := newBruteRanger()
for _, ranger := range rangers {
configureRangerWithAWSRanges(t, ranger)
}
configureRangerWithAWSRanges(t, baseRanger)
for i := 0; i < iterations; i++ {
nn := ipGen()
expected, err := baseRanger.ContainingNetworks(nn.ToIP())
assert.NoError(t, err)
for _, ranger := range rangers {
actual, err := ranger.ContainingNetworks(nn.ToIP())
assert.NoError(t, err)
assert.Equal(t, len(expected), len(actual))
for _, network := range actual {
assert.Contains(t, expected, network)
}
}
}
}
func testCoversNetworksAgainstBase(t *testing.T, iterations int, netGen networkGenerator) {
if testing.Short() {
t.Skip("Skipping memory test in `-short` mode")
}
rangers := []Ranger{NewPCTrieRanger()}
baseRanger := newBruteRanger()
for _, ranger := range rangers {
configureRangerWithAWSRanges(t, ranger)
}
configureRangerWithAWSRanges(t, baseRanger)
for i := 0; i < iterations; i++ {
network := netGen()
expected, err := baseRanger.CoveredNetworks(network.IPNet)
assert.NoError(t, err)
for _, ranger := range rangers {
actual, err := ranger.CoveredNetworks(network.IPNet)
assert.NoError(t, err)
assert.Equal(t, len(expected), len(actual))
for _, network := range actual {
assert.Contains(t, expected, network)
}
}
}
}
/*
******************************************************************
Benchmarks.
******************************************************************
*/
func BenchmarkPCTrieHitIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("52.95.110.1"), NewPCTrieRanger())
}
func BenchmarkBruteRangerHitIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("52.95.110.1"), newBruteRanger())
}
func BenchmarkPCTrieHitIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("2620:107:300f::36b7:ff81"), NewPCTrieRanger())
}
func BenchmarkBruteRangerHitIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("2620:107:300f::36b7:ff81"), newBruteRanger())
}
func BenchmarkPCTrieMissIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("123.123.123.123"), NewPCTrieRanger())
}
func BenchmarkBruteRangerMissIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("123.123.123.123"), newBruteRanger())
}
func BenchmarkPCTrieHMissIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("2620::ffff"), NewPCTrieRanger())
}
func BenchmarkBruteRangerMissIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainsUsingAWSRanges(b, net.ParseIP("2620::ffff"), newBruteRanger())
}
func BenchmarkPCTrieHitContainingNetworksIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("52.95.110.1"), NewPCTrieRanger())
}
func BenchmarkBruteRangerHitContainingNetworksIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("52.95.110.1"), newBruteRanger())
}
func BenchmarkPCTrieHitContainingNetworksIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("2620:107:300f::36b7:ff81"), NewPCTrieRanger())
}
func BenchmarkBruteRangerHitContainingNetworksIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("2620:107:300f::36b7:ff81"), newBruteRanger())
}
func BenchmarkPCTrieMissContainingNetworksIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("123.123.123.123"), NewPCTrieRanger())
}
func BenchmarkBruteRangerMissContainingNetworksIPv4UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("123.123.123.123"), newBruteRanger())
}
func BenchmarkPCTrieHMissContainingNetworksIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("2620::ffff"), NewPCTrieRanger())
}
func BenchmarkBruteRangerMissContainingNetworksIPv6UsingAWSRanges(b *testing.B) {
benchmarkContainingNetworksUsingAWSRanges(b, net.ParseIP("2620::ffff"), newBruteRanger())
}
func benchmarkContainsUsingAWSRanges(tb testing.TB, nn net.IP, ranger Ranger) {
configureRangerWithAWSRanges(tb, ranger)
for n := 0; n < tb.(*testing.B).N; n++ {
ranger.Contains(nn)
}
}
func benchmarkContainingNetworksUsingAWSRanges(tb testing.TB, nn net.IP, ranger Ranger) {
configureRangerWithAWSRanges(tb, ranger)
for n := 0; n < tb.(*testing.B).N; n++ {
ranger.ContainingNetworks(nn)
}
}
/*
******************************************************************
Helper methods and initialization.
******************************************************************
*/
type ipGenerator func() rnet.NetworkNumber
func randIPv4Gen() rnet.NetworkNumber {
return rnet.NetworkNumber{rand.Uint32()}
}
func randIPv6Gen() rnet.NetworkNumber {
return rnet.NetworkNumber{rand.Uint32(), rand.Uint32(), rand.Uint32(), rand.Uint32()}
}
func curatedAWSIPv6Gen() rnet.NetworkNumber {
randIdx := rand.Intn(len(ipV6AWSRangesIPNets))
// Randomly generate an IP somewhat near the range.
network := ipV6AWSRangesIPNets[randIdx]
nn := rnet.NewNetworkNumber(network.IP)
ones, bits := network.Mask.Size()
zeros := bits - ones
nnPartIdx := zeros / rnet.BitsPerUint32
nn[nnPartIdx] = rand.Uint32()
return nn
}
type networkGenerator func() rnet.Network
func randomIPNetGenFactory(pool []*net.IPNet) networkGenerator {
return func() rnet.Network {
return rnet.NewNetwork(*pool[rand.Intn(len(pool))])
}
}
type AWSRanges struct {
Prefixes []Prefix `json:"prefixes"`
IPv6Prefixes []IPv6Prefix `json:"ipv6_prefixes"`
}
type Prefix struct {
IPPrefix string `json:"ip_prefix"`
Region string `json:"region"`
Service string `json:"service"`
}
type IPv6Prefix struct {
IPPrefix string `json:"ipv6_prefix"`
Region string `json:"region"`
Service string `json:"service"`
}
var awsRanges *AWSRanges
var ipV4AWSRangesIPNets []*net.IPNet
var ipV6AWSRangesIPNets []*net.IPNet
func loadAWSRanges() *AWSRanges {
file, err := ioutil.ReadFile("./testdata/aws_ip_ranges.json")
if err != nil {
panic(err)
}
var ranges AWSRanges
err = json.Unmarshal(file, &ranges)
if err != nil {
panic(err)
}
return &ranges
}
func configureRangerWithAWSRanges(tb testing.TB, ranger Ranger) {
for _, prefix := range awsRanges.Prefixes {
_, network, err := net.ParseCIDR(prefix.IPPrefix)
assert.NoError(tb, err)
ranger.Insert(NewBasicRangerEntry(*network))
}
for _, prefix := range awsRanges.IPv6Prefixes {
_, network, err := net.ParseCIDR(prefix.IPPrefix)
assert.NoError(tb, err)
ranger.Insert(NewBasicRangerEntry(*network))
}
}
func init() {
awsRanges = loadAWSRanges()
for _, prefix := range awsRanges.IPv6Prefixes {
_, network, _ := net.ParseCIDR(prefix.IPPrefix)
ipV6AWSRangesIPNets = append(ipV6AWSRangesIPNets, network)
}
for _, prefix := range awsRanges.Prefixes {
_, network, _ := net.ParseCIDR(prefix.IPPrefix)
ipV4AWSRangesIPNets = append(ipV4AWSRangesIPNets, network)
}
rand.Seed(time.Now().Unix())
}
|
