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package main
import (
"testing"
)
/* Todo: More comprehensive
*/
type testPairCommonBits struct {
s1 []byte
s2 []byte
match uint
}
type testPairTrieInsert struct {
key []byte
cidr uint
peer *Peer
}
type testPairTrieLookup struct {
key []byte
peer *Peer
}
func printTrie(t *testing.T, p *Trie) {
if p == nil {
return
}
t.Log(p)
printTrie(t, p.child[0])
printTrie(t, p.child[1])
}
func TestCommonBits(t *testing.T) {
tests := []testPairCommonBits{
{s1: []byte{1, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 7},
{s1: []byte{0, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 13},
{s1: []byte{0, 4, 53, 253}, s2: []byte{0, 4, 53, 252}, match: 31},
{s1: []byte{192, 168, 1, 1}, s2: []byte{192, 169, 1, 1}, match: 15},
{s1: []byte{65, 168, 1, 1}, s2: []byte{192, 169, 1, 1}, match: 0},
}
for _, p := range tests {
v := commonBits(p.s1, p.s2)
if v != p.match {
t.Error(
"For slice", p.s1, p.s2,
"expected match", p.match,
",but got", v,
)
}
}
}
/* Test ported from kernel implementation:
* selftest/routingtable.h
*/
func TestTrieIPv4(t *testing.T) {
a := &Peer{}
b := &Peer{}
c := &Peer{}
d := &Peer{}
e := &Peer{}
g := &Peer{}
h := &Peer{}
var trie *Trie
insert := func(peer *Peer, a, b, c, d byte, cidr uint) {
trie = trie.Insert([]byte{a, b, c, d}, cidr, peer)
}
assertEQ := func(peer *Peer, a, b, c, d byte) {
p := trie.Lookup([]byte{a, b, c, d})
if p != peer {
t.Error("Assert EQ failed")
}
}
assertNEQ := func(peer *Peer, a, b, c, d byte) {
p := trie.Lookup([]byte{a, b, c, d})
if p == peer {
t.Error("Assert NEQ failed")
}
}
insert(a, 192, 168, 4, 0, 24)
insert(b, 192, 168, 4, 4, 32)
insert(c, 192, 168, 0, 0, 16)
insert(d, 192, 95, 5, 64, 27)
insert(c, 192, 95, 5, 65, 27) /* replaces previous entry, and maskself is required */
insert(e, 0, 0, 0, 0, 0)
insert(g, 64, 15, 112, 0, 20)
insert(h, 64, 15, 123, 211, 25) /* maskself is required */
insert(a, 10, 0, 0, 0, 25)
insert(b, 10, 0, 0, 128, 25)
insert(a, 10, 1, 0, 0, 30)
insert(b, 10, 1, 0, 4, 30)
insert(c, 10, 1, 0, 8, 29)
insert(d, 10, 1, 0, 16, 29)
assertEQ(a, 192, 168, 4, 20)
assertEQ(a, 192, 168, 4, 0)
assertEQ(b, 192, 168, 4, 4)
assertEQ(c, 192, 168, 200, 182)
assertEQ(c, 192, 95, 5, 68)
assertEQ(e, 192, 95, 5, 96)
assertEQ(g, 64, 15, 116, 26)
assertEQ(g, 64, 15, 127, 3)
insert(a, 1, 0, 0, 0, 32)
insert(a, 64, 0, 0, 0, 32)
insert(a, 128, 0, 0, 0, 32)
insert(a, 192, 0, 0, 0, 32)
insert(a, 255, 0, 0, 0, 32)
assertEQ(a, 1, 0, 0, 0)
assertEQ(a, 64, 0, 0, 0)
assertEQ(a, 128, 0, 0, 0)
assertEQ(a, 192, 0, 0, 0)
assertEQ(a, 255, 0, 0, 0)
trie = trie.RemovePeer(a)
assertNEQ(a, 1, 0, 0, 0)
assertNEQ(a, 64, 0, 0, 0)
assertNEQ(a, 128, 0, 0, 0)
assertNEQ(a, 192, 0, 0, 0)
assertNEQ(a, 255, 0, 0, 0)
trie = nil
insert(a, 192, 168, 0, 0, 16)
insert(a, 192, 168, 0, 0, 24)
trie = trie.RemovePeer(a)
assertNEQ(a, 192, 168, 0, 1)
}
/* Test ported from kernel implementation:
* selftest/routingtable.h
*/
func TestTrieIPv6(t *testing.T) {
a := &Peer{}
b := &Peer{}
c := &Peer{}
d := &Peer{}
e := &Peer{}
f := &Peer{}
g := &Peer{}
h := &Peer{}
var trie *Trie
expand := func(a uint32) []byte {
var out [4]byte
out[0] = byte(a >> 24 & 0xff)
out[1] = byte(a >> 16 & 0xff)
out[2] = byte(a >> 8 & 0xff)
out[3] = byte(a & 0xff)
return out[:]
}
insert := func(peer *Peer, a, b, c, d uint32, cidr uint) {
var addr []byte
addr = append(addr, expand(a)...)
addr = append(addr, expand(b)...)
addr = append(addr, expand(c)...)
addr = append(addr, expand(d)...)
trie = trie.Insert(addr, cidr, peer)
}
assertEQ := func(peer *Peer, a, b, c, d uint32) {
var addr []byte
addr = append(addr, expand(a)...)
addr = append(addr, expand(b)...)
addr = append(addr, expand(c)...)
addr = append(addr, expand(d)...)
p := trie.Lookup(addr)
if p != peer {
t.Error("Assert EQ failed")
}
}
/*
assertNEQ := func(peer *Peer, a, b, c, d uint32) {
var addr []byte
addr = append(addr, expand(a)...)
addr = append(addr, expand(b)...)
addr = append(addr, expand(c)...)
addr = append(addr, expand(d)...)
p := trie.Lookup(addr)
if p == peer {
t.Error("Assert NEQ failed")
}
}
*/
insert(d, 0x26075300, 0x60006b00, 0, 0xc05f0543, 128)
insert(c, 0x26075300, 0x60006b00, 0, 0, 64)
insert(e, 0, 0, 0, 0, 0)
insert(f, 0, 0, 0, 0, 0)
insert(g, 0x24046800, 0, 0, 0, 32)
insert(h, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef, 64)
insert(a, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef, 128)
insert(c, 0x24446800, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128)
insert(b, 0x24446800, 0xf0e40800, 0xeeaebeef, 0, 98)
assertEQ(d, 0x26075300, 0x60006b00, 0, 0xc05f0543)
assertEQ(c, 0x26075300, 0x60006b00, 0, 0xc02e01ee)
assertEQ(f, 0x26075300, 0x60006b01, 0, 0)
assertEQ(g, 0x24046800, 0x40040806, 0, 0x1006)
assertEQ(g, 0x24046800, 0x40040806, 0x1234, 0x5678)
assertEQ(f, 0x240467ff, 0x40040806, 0x1234, 0x5678)
assertEQ(f, 0x24046801, 0x40040806, 0x1234, 0x5678)
assertEQ(h, 0x24046800, 0x40040800, 0x1234, 0x5678)
assertEQ(h, 0x24046800, 0x40040800, 0, 0)
assertEQ(h, 0x24046800, 0x40040800, 0x10101010, 0x10101010)
assertEQ(a, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef)
}
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