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tailscale/net/routetable/routetable_linux_test.go

82 lines
1.9 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux
package routetable
import (
"fmt"
"net/netip"
"testing"
"golang.org/x/sys/unix"
)
func TestGetRouteTable(t *testing.T) {
routes, err := Get(512000) // arbitrarily large
if err != nil {
t.Fatal(err)
}
// Basic assertion: we have at least one 'default' route in the main table
var (
hasDefault bool
)
for _, route := range routes {
if route.Dst == defaultRouteIPv4 && route.Sys.(RouteEntryLinux).Table == unix.RT_TABLE_MAIN {
hasDefault = true
}
}
if !hasDefault {
t.Errorf("expected at least one default route; routes=%v", routes)
}
}
func TestRouteEntryFormatting(t *testing.T) {
testCases := []struct {
re RouteEntry
want string
}{
{
re: RouteEntry{
Family: 4,
Type: RouteTypeMulticast,
Dst: RouteDestination{Prefix: netip.MustParsePrefix("100.64.0.0/10")},
Gateway: netip.MustParseAddr("1.2.3.1"),
Interface: "tailscale0",
Sys: RouteEntryLinux{
Type: unix.RTN_UNICAST,
Table: 52,
Proto: unix.RTPROT_STATIC,
Src: netip.MustParseAddr("1.2.3.4"),
Priority: 555,
},
},
want: `{Family: IPv4, Type: multicast, Dst: 100.64.0.0/10, Gateway: 1.2.3.1, Interface: tailscale0, Sys: {Type: unicast, Table: 52, Proto: static, Src: 1.2.3.4, Priority: 555}}`,
},
{
re: RouteEntry{
Family: 4,
Type: RouteTypeUnicast,
Dst: RouteDestination{Prefix: netip.MustParsePrefix("1.2.3.0/24")},
Gateway: netip.MustParseAddr("1.2.3.1"),
Sys: RouteEntryLinux{
Type: unix.RTN_UNICAST,
Table: unix.RT_TABLE_MAIN,
Proto: unix.RTPROT_BOOT,
},
},
want: `{Family: IPv4, Dst: 1.2.3.0/24, Gateway: 1.2.3.1, Sys: {Type: unicast}}`,
},
}
for _, tc := range testCases {
t.Run("", func(t *testing.T) {
got := fmt.Sprint(tc.re)
if got != tc.want {
t.Fatalf("RouteEntry.String() = %q; want %q", got, tc.want)
}
})
}
}