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//go:build integration
// +build integration
package rtnl
import (
"bytes"
"net"
"strconv"
"testing"
)
const (
hardwareAddrLen = 6
)
var hardwareAddrZero = net.HardwareAddr{0, 0, 0, 0, 0, 0}
func hardwareAddrEqual(a, b net.HardwareAddr) bool {
return bytes.Equal(a, b)
}
func hardwareAddrIsUnspecified(hw net.HardwareAddr) bool {
return len(hw) != hardwareAddrLen || hardwareAddrEqual(hw, hardwareAddrZero)
}
// TestLinks tests the Live function returns sane results
func TestLiveLinks(t *testing.T) {
c, err := Dial(nil)
if err != nil {
t.Fatal(err)
}
defer c.Close()
links, err := c.Links()
if err != nil {
t.Fatal(err)
}
if len(links) == 0 {
t.Skip("no network interfaces")
}
ieth := 0
ilo := 0
for i, ifc := range links {
t.Logf("* entry %d: %#v", i, ifc)
if ifc.Index == 0 {
t.Error("zero ifc.Index")
}
if ifc.MTU == 0 {
t.Error("zero ifc.MTU")
}
if len(ifc.Name) == 0 {
t.Error("zero-length ifc.Name")
}
if !hardwareAddrIsUnspecified(ifc.HardwareAddr) {
ieth = ifc.Index
}
if ifc.Flags&net.FlagLoopback != 0 {
ilo = ifc.Index
}
}
if ieth == 0 {
t.Skip("no interfaces with non-zero link-level address")
}
if ilo == 0 {
t.Skip("no loopback interfaces")
}
t.Run("LinkByIndex", func(t *testing.T) {
for i, ifindex := range []int{ilo, ieth} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
ifc, err := c.LinkByIndex(ifindex)
if err != nil {
t.Fatal(err)
}
t.Logf("* %#v", ifc)
if ifc.Index == 0 {
t.Error("zero ifc.Index")
}
if ifc.Index != ifindex {
t.Errorf("returned wronk interface (%d != %d)", ifc.Index, ifindex)
}
if ifc.MTU == 0 {
t.Error("zero ifc.MTU")
}
if len(ifc.Name) == 0 {
t.Error("zero-length ifc.Name")
}
if ifindex == ieth && hardwareAddrIsUnspecified(ifc.HardwareAddr) {
t.Error("zero ifc.HardwareAddr, expected non-zero")
}
if ifindex == ilo && ifc.Flags&net.FlagLoopback == 0 {
t.Error("no FlagLoopback in ifc.Flags, expected to be set")
}
})
}
})
}
|
