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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package net
import (
"reflect"
"testing"
)
// loopbackInterface returns an available logical network interface
// for loopback tests. It returns nil if no suitable interface is
// found.
func loopbackInterface() *Interface {
ift, err := Interfaces()
if err != nil {
return nil
}
for _, ifi := range ift {
if ifi.Flags&FlagLoopback != 0 && ifi.Flags&FlagUp != 0 {
return &ifi
}
}
return nil
}
// ipv6LinkLocalUnicastAddr returns an IPv6 link-local unicast address
// on the given network interface for tests. It returns "" if no
// suitable address is found.
func ipv6LinkLocalUnicastAddr(ifi *Interface) string {
if ifi == nil {
return ""
}
ifat, err := ifi.Addrs()
if err != nil {
return ""
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *IPAddr:
if ifa.IP.To4() == nil && ifa.IP.IsLinkLocalUnicast() {
return ifa.IP.String()
}
case *IPNet:
if ifa.IP.To4() == nil && ifa.IP.IsLinkLocalUnicast() {
return ifa.IP.String()
}
}
}
return ""
}
func TestInterfaces(t *testing.T) {
ift, err := Interfaces()
if err != nil {
t.Fatalf("Interfaces failed: %v", err)
}
t.Logf("table: len/cap = %v/%v", len(ift), cap(ift))
for _, ifi := range ift {
ifxi, err := InterfaceByIndex(ifi.Index)
if err != nil {
t.Fatalf("InterfaceByIndex(%v) failed: %v", ifi.Index, err)
}
if !reflect.DeepEqual(ifxi, &ifi) {
t.Fatalf("InterfaceByIndex(%v) = %v, want %v", ifi.Index, ifxi, ifi)
}
ifxn, err := InterfaceByName(ifi.Name)
if err != nil {
t.Fatalf("InterfaceByName(%q) failed: %v", ifi.Name, err)
}
if !reflect.DeepEqual(ifxn, &ifi) {
t.Fatalf("InterfaceByName(%q) = %v, want %v", ifi.Name, ifxn, ifi)
}
t.Logf("%q: flags %q, ifindex %v, mtu %v", ifi.Name, ifi.Flags.String(), ifi.Index, ifi.MTU)
t.Logf("\thardware address %q", ifi.HardwareAddr.String())
testInterfaceAddrs(t, &ifi)
testInterfaceMulticastAddrs(t, &ifi)
}
}
func TestInterfaceAddrs(t *testing.T) {
ifat, err := InterfaceAddrs()
if err != nil {
t.Fatalf("InterfaceAddrs failed: %v", err)
}
t.Logf("table: len/cap = %v/%v", len(ifat), cap(ifat))
testAddrs(t, ifat)
}
func testInterfaceAddrs(t *testing.T, ifi *Interface) {
ifat, err := ifi.Addrs()
if err != nil {
t.Fatalf("Interface.Addrs failed: %v", err)
}
testAddrs(t, ifat)
}
func testInterfaceMulticastAddrs(t *testing.T, ifi *Interface) {
ifmat, err := ifi.MulticastAddrs()
if err != nil {
t.Fatalf("Interface.MulticastAddrs failed: %v", err)
}
testMulticastAddrs(t, ifmat)
}
func testAddrs(t *testing.T, ifat []Addr) {
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *IPAddr:
if ifa == nil || ifa.IP == nil {
t.Errorf("\tunexpected value: %v, %v", ifa, ifa.IP)
} else {
t.Logf("\tinterface address %q", ifa.String())
}
case *IPNet:
if ifa == nil || ifa.IP == nil || ifa.Mask == nil {
t.Errorf("\tunexpected value: %v, %v, %v", ifa, ifa.IP, ifa.Mask)
} else {
_, prefixLen := ifa.Mask.Size()
if ifa.IP.To4() != nil && prefixLen != 8*IPv4len || ifa.IP.To16() != nil && ifa.IP.To4() == nil && prefixLen != 8*IPv6len {
t.Errorf("\tunexpected value: %v, %v, %v, %v", ifa, ifa.IP, ifa.Mask, prefixLen)
} else {
t.Logf("\tinterface address %q", ifa.String())
}
}
default:
t.Errorf("\tunexpected type: %T", ifa)
}
}
}
func testMulticastAddrs(t *testing.T, ifmat []Addr) {
for _, ifma := range ifmat {
switch ifma := ifma.(type) {
case *IPAddr:
if ifma == nil {
t.Errorf("\tunexpected value: %v", ifma)
} else {
t.Logf("\tjoined group address %q", ifma.String())
}
default:
t.Errorf("\tunexpected type: %T", ifma)
}
}
}
func BenchmarkInterfaces(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := Interfaces(); err != nil {
b.Fatalf("Interfaces failed: %v", err)
}
}
}
func BenchmarkInterfaceByIndex(b *testing.B) {
ifi := loopbackInterface()
if ifi == nil {
b.Skip("loopback interface not found")
}
for i := 0; i < b.N; i++ {
if _, err := InterfaceByIndex(ifi.Index); err != nil {
b.Fatalf("InterfaceByIndex failed: %v", err)
}
}
}
func BenchmarkInterfaceByName(b *testing.B) {
ifi := loopbackInterface()
if ifi == nil {
b.Skip("loopback interface not found")
}
for i := 0; i < b.N; i++ {
if _, err := InterfaceByName(ifi.Name); err != nil {
b.Fatalf("InterfaceByName failed: %v", err)
}
}
}
func BenchmarkInterfaceAddrs(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := InterfaceAddrs(); err != nil {
b.Fatalf("InterfaceAddrs failed: %v", err)
}
}
}
func BenchmarkInterfacesAndAddrs(b *testing.B) {
ifi := loopbackInterface()
if ifi == nil {
b.Skip("loopback interface not found")
}
for i := 0; i < b.N; i++ {
if _, err := ifi.Addrs(); err != nil {
b.Fatalf("Interface.Addrs failed: %v", err)
}
}
}
func BenchmarkInterfacesAndMulticastAddrs(b *testing.B) {
ifi := loopbackInterface()
if ifi == nil {
b.Skip("loopback interface not found")
}
for i := 0; i < b.N; i++ {
if _, err := ifi.MulticastAddrs(); err != nil {
b.Fatalf("Interface.MulticastAddrs failed: %v", err)
}
}
}
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