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|
package cidranger
import (
"net"
"testing"
"github.com/stretchr/testify/assert"
rnet "github.com/yl2chen/cidranger/net"
)
func TestPrefixTrieInsert(t *testing.T) {
cases := []struct {
version rnet.IPVersion
inserts []string
expectedNetworksInDepthOrder []string
name string
}{
{rnet.IPv4, []string{"192.168.0.1/24"}, []string{"192.168.0.1/24"}, "basic insert"},
{
rnet.IPv4,
[]string{"1.2.3.4/32", "1.2.3.5/32"},
[]string{"1.2.3.4/32", "1.2.3.5/32"},
"single ip IPv4 network insert",
},
{
rnet.IPv6,
[]string{"0::1/128", "0::2/128"},
[]string{"0::1/128", "0::2/128"},
"single ip IPv6 network insert",
},
{
rnet.IPv4,
[]string{"192.168.0.1/16", "192.168.0.1/24"},
[]string{"192.168.0.1/16", "192.168.0.1/24"},
"in order insert",
},
{
rnet.IPv4,
[]string{"192.168.0.1/32", "192.168.0.1/32"},
[]string{"192.168.0.1/32"},
"duplicate network insert",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.0.1/16"},
[]string{"192.168.0.1/16", "192.168.0.1/24"},
"reverse insert",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.1.1/24"},
[]string{"192.168.0.1/24", "192.168.1.1/24"},
"branch insert",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.1.1/24", "192.168.1.1/30"},
[]string{"192.168.0.1/24", "192.168.1.1/24", "192.168.1.1/30"},
"branch inserts",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version).(*prefixTrie)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
walk := trie.walkDepth()
for _, network := range tc.expectedNetworksInDepthOrder {
_, ipnet, _ := net.ParseCIDR(network)
expected := NewBasicRangerEntry(*ipnet)
actual := <-walk
assert.Equal(t, expected, actual)
}
// Ensure no unexpected elements in trie.
for network := range walk {
assert.Nil(t, network)
}
})
}
}
func TestPrefixTrieString(t *testing.T) {
inserts := []string{"192.168.0.1/24", "192.168.1.1/24", "192.168.1.1/30"}
trie := newPrefixTree(rnet.IPv4).(*prefixTrie)
for _, insert := range inserts {
_, network, _ := net.ParseCIDR(insert)
trie.Insert(NewBasicRangerEntry(*network))
}
expected := `0.0.0.0/0 (target_pos:31:has_entry:false)
| 1--> 192.168.0.0/23 (target_pos:8:has_entry:false)
| | 0--> 192.168.0.0/24 (target_pos:7:has_entry:true)
| | 1--> 192.168.1.0/24 (target_pos:7:has_entry:true)
| | | 0--> 192.168.1.0/30 (target_pos:1:has_entry:true)`
assert.Equal(t, expected, trie.String())
}
func TestPrefixTrieRemove(t *testing.T) {
cases := []struct {
version rnet.IPVersion
inserts []string
removes []string
expectedRemoves []string
expectedNetworksInDepthOrder []string
name string
}{
{
rnet.IPv4,
[]string{"192.168.0.1/24"},
[]string{"192.168.0.1/24"},
[]string{"192.168.0.1/24"},
[]string{},
"basic remove",
},
{
rnet.IPv4,
[]string{"1.2.3.4/32", "1.2.3.5/32"},
[]string{"1.2.3.5/32"},
[]string{"1.2.3.5/32"},
[]string{"1.2.3.4/32"},
"single ip IPv4 network remove",
},
{
rnet.IPv4,
[]string{"0::1/128", "0::2/128"},
[]string{"0::2/128"},
[]string{"0::2/128"},
[]string{"0::1/128"},
"single ip IPv6 network remove",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.0.1/25", "192.168.0.1/26"},
[]string{"192.168.0.1/25"},
[]string{"192.168.0.1/25"},
[]string{"192.168.0.1/24", "192.168.0.1/26"},
"remove path prefix",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.0.1/25", "192.168.0.64/26", "192.168.0.1/26"},
[]string{"192.168.0.1/25"},
[]string{"192.168.0.1/25"},
[]string{"192.168.0.1/24", "192.168.0.1/26", "192.168.0.64/26"},
"remove path prefix with more than 1 children",
},
{
rnet.IPv4,
[]string{"192.168.0.1/24", "192.168.0.1/25"},
[]string{"192.168.0.1/26"},
[]string{""},
[]string{"192.168.0.1/24", "192.168.0.1/25"},
"remove non existent",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version).(*prefixTrie)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
for i, remove := range tc.removes {
_, network, _ := net.ParseCIDR(remove)
removed, err := trie.Remove(*network)
assert.NoError(t, err)
if str := tc.expectedRemoves[i]; str != "" {
_, ipnet, _ := net.ParseCIDR(str)
expected := NewBasicRangerEntry(*ipnet)
assert.Equal(t, expected, removed)
} else {
assert.Nil(t, removed)
}
}
walk := trie.walkDepth()
for _, network := range tc.expectedNetworksInDepthOrder {
_, ipnet, _ := net.ParseCIDR(network)
expected := NewBasicRangerEntry(*ipnet)
actual := <-walk
assert.Equal(t, expected, actual)
}
// Ensure no unexpected elements in trie.
for network := range walk {
assert.Nil(t, network)
}
})
}
}
func TestToReplicateIssue(t *testing.T) {
cases := []struct {
version rnet.IPVersion
inserts []string
ip net.IP
networks []string
name string
}{
{
rnet.IPv4,
[]string{"192.168.0.1/32"},
net.ParseIP("192.168.0.1"),
[]string{"192.168.0.1/32"},
"basic containing network for /32 mask",
},
{
rnet.IPv6,
[]string{"a::1/128"},
net.ParseIP("a::1"),
[]string{"a::1/128"},
"basic containing network for /128 mask",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
expectedEntries := []RangerEntry{}
for _, network := range tc.networks {
_, net, _ := net.ParseCIDR(network)
expectedEntries = append(expectedEntries, NewBasicRangerEntry(*net))
}
contains, err := trie.Contains(tc.ip)
assert.NoError(t, err)
assert.True(t, contains)
networks, err := trie.ContainingNetworks(tc.ip)
assert.NoError(t, err)
assert.Equal(t, expectedEntries, networks)
})
}
}
type expectedIPRange struct {
start net.IP
end net.IP
}
func TestPrefixTrieContains(t *testing.T) {
cases := []struct {
version rnet.IPVersion
inserts []string
expectedIPs []expectedIPRange
name string
}{
{
rnet.IPv4,
[]string{"192.168.0.0/24"},
[]expectedIPRange{
{net.ParseIP("192.168.0.0"), net.ParseIP("192.168.1.0")},
},
"basic contains",
},
{
rnet.IPv4,
[]string{"192.168.0.0/24", "128.168.0.0/24"},
[]expectedIPRange{
{net.ParseIP("192.168.0.0"), net.ParseIP("192.168.1.0")},
{net.ParseIP("128.168.0.0"), net.ParseIP("128.168.1.0")},
},
"multiple ranges contains",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
for _, expectedIPRange := range tc.expectedIPs {
var contains bool
var err error
start := expectedIPRange.start
for ; !expectedIPRange.end.Equal(start); start = rnet.NextIP(start) {
contains, err = trie.Contains(start)
assert.NoError(t, err)
assert.True(t, contains)
}
// Check out of bounds ips on both ends
contains, err = trie.Contains(rnet.PreviousIP(expectedIPRange.start))
assert.NoError(t, err)
assert.False(t, contains)
contains, err = trie.Contains(rnet.NextIP(expectedIPRange.end))
assert.NoError(t, err)
assert.False(t, contains)
}
})
}
}
func TestPrefixTrieContainingNetworks(t *testing.T) {
cases := []struct {
version rnet.IPVersion
inserts []string
ip net.IP
networks []string
name string
}{
{
rnet.IPv4,
[]string{"192.168.0.0/24"},
net.ParseIP("192.168.0.1"),
[]string{"192.168.0.0/24"},
"basic containing networks",
},
{
rnet.IPv4,
[]string{"192.168.0.0/24", "192.168.0.0/25"},
net.ParseIP("192.168.0.1"),
[]string{"192.168.0.0/24", "192.168.0.0/25"},
"inclusive networks",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
expectedEntries := []RangerEntry{}
for _, network := range tc.networks {
_, net, _ := net.ParseCIDR(network)
expectedEntries = append(expectedEntries, NewBasicRangerEntry(*net))
}
networks, err := trie.ContainingNetworks(tc.ip)
assert.NoError(t, err)
assert.Equal(t, expectedEntries, networks)
})
}
}
type coveredNetworkTest struct {
version rnet.IPVersion
inserts []string
search string
networks []string
name string
}
var coveredNetworkTests = []coveredNetworkTest{
{
rnet.IPv4,
[]string{"192.168.0.0/24"},
"192.168.0.0/16",
[]string{"192.168.0.0/24"},
"basic covered networks",
},
{
rnet.IPv4,
[]string{"192.168.0.0/24"},
"10.1.0.0/16",
nil,
"nothing",
},
{
rnet.IPv4,
[]string{"192.168.0.0/24", "192.168.0.0/25"},
"192.168.0.0/16",
[]string{"192.168.0.0/24", "192.168.0.0/25"},
"multiple networks",
},
{
rnet.IPv4,
[]string{"192.168.0.0/24", "192.168.0.0/25", "192.168.0.1/32"},
"192.168.0.0/16",
[]string{"192.168.0.0/24", "192.168.0.0/25", "192.168.0.1/32"},
"multiple networks 2",
},
{
rnet.IPv4,
[]string{"192.168.1.1/32"},
"192.168.0.0/16",
[]string{"192.168.1.1/32"},
"leaf",
},
{
rnet.IPv4,
[]string{"0.0.0.0/0", "192.168.1.1/32"},
"192.168.0.0/16",
[]string{"192.168.1.1/32"},
"leaf with root",
},
{
rnet.IPv4,
[]string{
"0.0.0.0/0", "192.168.0.0/24", "192.168.1.1/32",
"10.1.0.0/16", "10.1.1.0/24",
},
"192.168.0.0/16",
[]string{"192.168.0.0/24", "192.168.1.1/32"},
"path not taken",
},
{
rnet.IPv4,
[]string{
"192.168.0.0/15",
},
"192.168.0.0/16",
nil,
"only masks different",
},
}
func TestPrefixTrieCoveredNetworks(t *testing.T) {
for _, tc := range coveredNetworkTests {
t.Run(tc.name, func(t *testing.T) {
trie := newPrefixTree(tc.version)
for _, insert := range tc.inserts {
_, network, _ := net.ParseCIDR(insert)
err := trie.Insert(NewBasicRangerEntry(*network))
assert.NoError(t, err)
}
var expectedEntries []RangerEntry
for _, network := range tc.networks {
_, net, _ := net.ParseCIDR(network)
expectedEntries = append(expectedEntries,
NewBasicRangerEntry(*net))
}
_, snet, _ := net.ParseCIDR(tc.search)
networks, err := trie.CoveredNetworks(*snet)
assert.NoError(t, err)
assert.Equal(t, expectedEntries, networks)
})
}
}
|
