mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-01 22:15:51 +00:00
98 lines
2.2 KiB
Go
98 lines
2.2 KiB
Go
// Copyright (c) 2020 Tailscale Inc & 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 router
|
|
|
|
import (
|
|
"math/rand"
|
|
"net"
|
|
"testing"
|
|
|
|
winipcfg "github.com/tailscale/winipcfg-go"
|
|
"inet.af/netaddr"
|
|
)
|
|
|
|
func randIP() net.IP {
|
|
b := byte(rand.Intn(3))
|
|
return net.IP{b, b, b, b}
|
|
}
|
|
|
|
func randRouteData() *winipcfg.RouteData {
|
|
return &winipcfg.RouteData{
|
|
Destination: net.IPNet{
|
|
IP: randIP(),
|
|
Mask: net.CIDRMask(rand.Intn(3)+1, 32),
|
|
},
|
|
NextHop: randIP(),
|
|
Metric: uint32(rand.Intn(3)),
|
|
}
|
|
}
|
|
|
|
func TestRouteLess(t *testing.T) {
|
|
type D = winipcfg.RouteData
|
|
ipnet := func(s string) net.IPNet {
|
|
ipp, err := netaddr.ParseIPPrefix(s)
|
|
if err != nil {
|
|
t.Fatalf("error parsing test data %q: %v", s, err)
|
|
}
|
|
return *ipp.IPNet()
|
|
}
|
|
|
|
tests := []struct {
|
|
ri, rj *winipcfg.RouteData
|
|
want bool
|
|
}{
|
|
{
|
|
ri: &D{Metric: 1},
|
|
rj: &D{Metric: 2},
|
|
want: true,
|
|
},
|
|
{
|
|
ri: &D{Destination: ipnet("1.1.0.0/16"), Metric: 2},
|
|
rj: &D{Destination: ipnet("2.2.0.0/16"), Metric: 1},
|
|
want: true,
|
|
},
|
|
{
|
|
ri: &D{Destination: ipnet("1.1.0.0/16"), Metric: 1},
|
|
rj: &D{Destination: ipnet("2.2.0.0/16"), Metric: 1},
|
|
want: true,
|
|
},
|
|
{
|
|
ri: &D{Destination: ipnet("1.1.0.0/32"), Metric: 2},
|
|
rj: &D{Destination: ipnet("1.1.0.0/16"), Metric: 1},
|
|
want: true,
|
|
},
|
|
{
|
|
ri: &D{Destination: ipnet("1.1.0.0/32"), Metric: 1},
|
|
rj: &D{Destination: ipnet("1.1.0.0/16"), Metric: 1},
|
|
want: true,
|
|
},
|
|
{
|
|
ri: &D{Destination: ipnet("1.1.0.0/16"), Metric: 1, NextHop: net.ParseIP("3.3.3.3")},
|
|
rj: &D{Destination: ipnet("1.1.0.0/16"), Metric: 1, NextHop: net.ParseIP("4.4.4.4")},
|
|
want: true,
|
|
},
|
|
}
|
|
for i, tt := range tests {
|
|
got := routeLess(tt.ri, tt.rj)
|
|
if got != tt.want {
|
|
t.Errorf("%v. less = %v; want %v", i, got, tt.want)
|
|
}
|
|
back := routeLess(tt.rj, tt.ri)
|
|
if back && got {
|
|
t.Errorf("%v. less both ways", i)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestRouteLessConsistent(t *testing.T) {
|
|
for i := 0; i < 10000; i++ {
|
|
ri := randRouteData()
|
|
rj := randRouteData()
|
|
if routeLess(ri, rj) && routeLess(rj, ri) {
|
|
t.Fatalf("both compare less to each other:\n\t%#v\nand\n\t%#v", ri, rj)
|
|
}
|
|
}
|
|
}
|