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addr_test.go
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package net
import (
"net"
"testing"
"github.com/stretchr/testify/assert"
)
func TestIPv4(t *testing.T) {
addr := IPAddress{
data: ipv4data{192, 168, 0, 1},
}
assert.True(t, addr.IsValid())
assert.Equal(t, "192.168.0.1", addr.String())
assert.Equal(t, IPv4, addr.Family())
assert.True(t, addr.AsNetIP().Equal(net.ParseIP("192.168.0.1")))
}
func TestIPv6(t *testing.T) {
addr := IPAddress{
data: ipv6data{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
}
assert.True(t, addr.IsValid())
assert.Equal(t, "::1", addr.String())
assert.Equal(t, IPv6, addr.Family())
assert.True(t, addr.AsNetIP().Equal(net.ParseIP("::1")))
}
func TestInvalid(t *testing.T) {
addr := IPAddress{}
assert.False(t, addr.IsValid())
assert.Empty(t, addr.String())
assert.Equal(t, InvalidFamily, addr.Family())
assert.Nil(t, addr.AsNetIP())
}
func TestParseIPv4(t *testing.T) {
addr := ParseIP("192.168.0.1")
assert.Equal(t, IPAddress{data: ipv4data{192, 168, 0, 1}}, addr)
}
func TestParseIPv6(t *testing.T) {
addr := ParseIP("::1")
assert.Equal(t, IPAddress{data: ipv6data{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}, addr)
}
func TestParseInvalid(t *testing.T) {
addr := ParseIP("1.2.3.4.5")
assert.False(t, addr.IsValid())
}
func TestIPv4FromBytes(t *testing.T) {
addr := IPFromBytes([]byte{192, 168, 0, 1})
assert.Equal(t, IPAddress{data: ipv4data{192, 168, 0, 1}}, addr)
}
func TestIPv6FromBytes(t *testing.T) {
addr := IPFromBytes([]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1})
assert.Equal(t, IPAddress{data: ipv6data{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}}, addr)
}
func TestIPv4MappedIPv6FromBytes(t *testing.T) {
addr := IPFromBytes([]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x0A, 0x14, 0x25, 0xB2})
assert.Equal(t, IPAddress{data: ipv4data{10, 20, 37, 178}}, addr)
}
func TestIsPublic_True(t *testing.T) {
publicIPs := []string{
"4.4.4.4",
"8.8.8.8",
"131.217.0.129",
"127.0.0.1",
"::1",
"2a02:908:e850:cf20:9919:44af:a46e:1669",
"::ffff:4.4.4.4",
}
for _, publicIP := range publicIPs {
ip := ParseIP(publicIP)
assert.True(t, ip.IsPublic(), "expected IP %s to be public", publicIP)
}
}
func TestIsPublic_False(t *testing.T) {
privateIPs := []string{
"10.127.127.1",
"172.31.254.254",
"192.168.0.1",
"fd12:3456:789a:1::1",
"::ffff:10.1.1.1",
}
for _, privateIP := range privateIPs {
ip := ParseIP(privateIP)
assert.False(t, ip.IsPublic(), "expected IP %s to be private", privateIP)
}
}
func TestFromCIDRString_Valid(t *testing.T) {
cidrs := []string{
"192.168.0.1/8",
"0.0.0.0/0",
"::ffff:4.4.4.4/32",
"::ffff:4.4.4.4/0",
"::1/52",
}
for _, cidr := range cidrs {
actual := IPNetworkFromCIDR(cidr)
assert.NotEqual(t, IPNetwork{}, actual)
}
}
func TestFromCIDRString_InValid(t *testing.T) {
cidrs := []string{
"192.168.0.1/64",
"0.0.0.0",
"::ffff:4.4.4.4/200",
"::ffff:.4/0",
"::1",
}
for _, cidr := range cidrs {
actual := IPNetworkFromCIDR(cidr)
assert.Equal(t, IPNetwork{}, actual)
}
}
func TestFromCIDRBytes_Valid(t *testing.T) {
cidrs := [][]byte{
{192, 168, 0, 1, 8},
{0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 4, 4, 4, 4, 0},
}
for _, cidr := range cidrs {
actual := IPNetworkFromCIDRBytes(cidr)
assert.NotEqual(t, IPNetwork{}, actual)
}
}
func TestFromCIDRBytesInvalid(t *testing.T) {
cidrs := [][]byte{
{192, 168, 0, 1, 64},
{0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 200},
{0, 0, 255, 0, 4, 0},
{0, 0, 1},
}
for _, cidr := range cidrs {
actual := IPNetworkFromCIDRBytes(cidr)
assert.Equal(t, IPNetwork{}, actual)
}
}
func TestIPAddressCompare(t *testing.T) {
tests := map[string]struct {
a IPAddress
b IPAddress
expected int
}{
"should return zero when addresses are identical": {
a: ParseIP("192.168.1.1"),
b: ParseIP("192.168.1.1"),
expected: 0,
},
"should return negative when first address is lexicographically smaller": {
a: ParseIP("192.168.1.1"),
b: ParseIP("192.168.1.2"),
expected: -1,
},
"should return positive when first address is lexicographically larger": {
a: ParseIP("192.168.1.2"),
b: ParseIP("192.168.1.1"),
expected: 1,
},
"should return negative when IPv4 compared to IPv6 due to byte length": {
a: ParseIP("192.168.1.1"),
b: ParseIP("::1"),
expected: -12,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
result := IPAddressCompare(tt.a, tt.b)
assert.Equal(t, tt.expected, result)
})
}
}