ip_prefix_trie/ip_prefix_trie_test.go at master · bwNetFlow/ip_prefix_trie · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
package ip_prefix_trie

import (
	"encoding/binary"
	"fmt"
	"math/rand"
	"net"
	"testing"
	"time"
)

var v4_trie, v6_trie TrieNode

func TestInsert(t *testing.T) {
	v4_trie.Insert(123, []string{"192.168.0.0/16"})
	v6_trie.Insert(123, []string{"2001:db8:1234::/48"})
}

func TestLookupIPv4(t *testing.T) {
	ip, _, _ := net.ParseCIDR("192.168.0.7/24")
	matched_knr := v4_trie.Lookup(ip)
	if matched_knr == nil || 123 != matched_knr.(int) {
		t.Errorf("ERR: IP '%s' should match '123', was '%v'", ip, matched_knr)
	} else {
		t.Logf(" OK: IP '%s' matched Cid '123'", ip)
	}
}

func TestLookupIPv6(t *testing.T) {
	ip, _, _ := net.ParseCIDR("2001:db8:1234::7/64")
	matched_knr := v6_trie.Lookup(ip)
	if matched_knr == nil || 123 != matched_knr.(int) {
		t.Errorf("ERR: IP '%s' should match '123', was '%v'", ip, matched_knr)
	} else {
		t.Logf(" OK: IP '%s' matched Cid '123'", ip)
	}
}

func TestLookupNil(t *testing.T) {
	matched_knr := v6_trie.Lookup(nil)
	if matched_knr == nil {
		t.Logf(" OK: nil IP produced no error")
	}
}

func TestSubTrieCorrectness(t *testing.T) {
	var my_trie TrieNode
	my_trie.Insert(1, []string{"0.0.0.0/0"})
	my_trie.Insert(3, []string{"255.255.255.255/32"})
	my_trie.Insert(2, []string{"255.255.0.0/16"})
	my_trie.Print("", true)
	ip1, _, _ := net.ParseCIDR("0.0.0.1/32")
	ip2, _, _ := net.ParseCIDR("255.255.0.1/32")
	ip3, _, _ := net.ParseCIDR("255.255.255.255/32")
	matched_knr1 := my_trie.Lookup(ip1)
	if matched_knr1 == nil || 1 != matched_knr1.(int) {
		t.Errorf("ERR: IP '%s' should match '1', was '%v'", ip1, matched_knr1)
	} else {
		t.Logf(" OK: IP '%s' matched Cid '1'", ip1)
	}
	matched_knr2 := my_trie.Lookup(ip2)
	if matched_knr2 == nil || 2 != matched_knr2.(int) {
		t.Errorf("ERR: IP '%s' should match '2', was '%v'", ip2, matched_knr2)
	} else {
		t.Logf(" OK: IP '%s' matched Cid '2'", ip2)
	}
	matched_knr3 := my_trie.Lookup(ip3)
	if matched_knr3 == nil || 3 != matched_knr3.(int) {
		t.Errorf("ERR: IP '%s' should match '3', was '%v'", ip3, matched_knr3)
	} else {
		t.Logf(" OK: IP '%s' matched Cid '3'", ip3)
	}
}

func TestUint128Shift(t *testing.T) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)
	var myUint Uint128 = Uint128{r1.Uint64(), r1.Uint64()}
	var myShiftedUint Uint128 = myUint.ShiftRight(1)

	str1 := fmt.Sprintf("%064b%064b\n", myUint.H, myUint.L)
	str2 := fmt.Sprintf("%064b%064b\n", myShiftedUint.H, myShiftedUint.L)

	if str1[0:127] != str2[1:128] {
		t.Errorf("Incorrect ShiftRight result for %d.\n", myUint)
		t.Log(str1)
		t.Log(str2)
	}
}

func TestUint128ShiftLong(t *testing.T) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)
	var myUint Uint128 = Uint128{r1.Uint64(), r1.Uint64()}
	var myShiftedUint Uint128 = myUint.ShiftRight(100)

	str1 := fmt.Sprintf("%064b%064b\n", myUint.H, myUint.L)
	str2 := fmt.Sprintf("%064b%064b\n", myShiftedUint.H, myShiftedUint.L)

	if str1[0:28] != str2[100:128] {
		t.Errorf("Incorrect ShiftRight result for %d.\n", myUint)
		t.Log(str1)
		t.Log(str2)
	}
}

func BenchmarkIPv4LookupHit(b *testing.B) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)

	for n := 0; n < b.N; n++ {
		ip := net.IPv4(192, 168, byte(r1.Int()), byte(r1.Int()))
		v4_trie.Lookup(ip)
	}
}

func BenchmarkIPv6LookupHit(b *testing.B) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)

	for n := 0; n < b.N; n++ {
		ip_data := make([]byte, 16)
		binary.LittleEndian.PutUint64(ip_data, r1.Uint64())
		ip_data[0] = 0x20
		ip_data[1] = 0x01
		ip_data[2] = 0x0d
		ip_data[3] = 0xb8
		ip_data[4] = 0x12
		ip_data[5] = 0x34
		ip := net.IP(ip_data)
		v6_trie.Lookup(ip)
	}
}

func BenchmarkIPv4LookupProbableMiss(b *testing.B) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)

	for n := 0; n < b.N; n++ {
		ip := net.IPv4(byte(r1.Int()), byte(r1.Int()), byte(r1.Int()), byte(r1.Int()))
		v4_trie.Lookup(ip)
	}
}

func BenchmarkIPv6LookupProbableMiss(b *testing.B) {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)

	for n := 0; n < b.N; n++ {
		ip_data := make([]byte, 16)
		binary.LittleEndian.PutUint64(ip_data, r1.Uint64())
		ip_data[0] = 0x20
		ip_data[1] = 0x01
		ip_data[2] = 0x0d
		ip_data[3] = 0xb8
		ip := net.IP(ip_data)
		v6_trie.Lookup(ip)
	}
}