// Copyright (c) Tailscale Inc & AUTHORS // SPDX-License-Identifier: BSD-3-Clause package router import ( "net/netip" "reflect" "testing" "tailscale.com/types/preftype" ) func mustCIDRs(ss ...string) []netip.Prefix { var ret []netip.Prefix for _, s := range ss { ret = append(ret, netip.MustParsePrefix(s)) } return ret } func TestConfigEqual(t *testing.T) { testedFields := []string{ "LocalAddrs", "Routes", "LocalRoutes", "NewMTU", "SubnetRoutes", "SNATSubnetRoutes", "NetfilterMode", } configType := reflect.TypeOf(Config{}) configFields := []string{} for i := 0; i < configType.NumField(); i++ { configFields = append(configFields, configType.Field(i).Name) } if !reflect.DeepEqual(configFields, testedFields) { t.Errorf("Config.Equal check might be out of sync\nfields: %q\nhandled: %q\n", configFields, testedFields) } nets := func(strs ...string) (ns []netip.Prefix) { for _, s := range strs { n, err := netip.ParsePrefix(s) if err != nil { panic(err) } ns = append(ns, n) } return ns } tests := []struct { a, b *Config want bool }{ { nil, nil, true, }, { &Config{}, nil, false, }, { nil, &Config{}, false, }, { &Config{}, &Config{}, true, }, { &Config{LocalAddrs: nets("100.1.27.82/32")}, &Config{LocalAddrs: nets("100.2.19.82/32")}, false, }, { &Config{LocalAddrs: nets("100.1.27.82/32")}, &Config{LocalAddrs: nets("100.1.27.82/32")}, true, }, { &Config{Routes: nets("100.1.27.0/24")}, &Config{Routes: nets("100.2.19.0/24")}, false, }, { &Config{Routes: nets("100.2.19.0/24")}, &Config{Routes: nets("100.2.19.0/24")}, true, }, { &Config{LocalRoutes: nets("100.1.27.0/24")}, &Config{LocalRoutes: nets("100.2.19.0/24")}, false, }, { &Config{LocalRoutes: nets("100.1.27.0/24")}, &Config{LocalRoutes: nets("100.1.27.0/24")}, true, }, { &Config{SubnetRoutes: nets("100.1.27.0/24")}, &Config{SubnetRoutes: nets("100.2.19.0/24")}, false, }, { &Config{SubnetRoutes: nets("100.1.27.0/24")}, &Config{SubnetRoutes: nets("100.1.27.0/24")}, true, }, { &Config{SNATSubnetRoutes: false}, &Config{SNATSubnetRoutes: true}, false, }, { &Config{SNATSubnetRoutes: false}, &Config{SNATSubnetRoutes: false}, true, }, { &Config{NetfilterMode: preftype.NetfilterOff}, &Config{NetfilterMode: preftype.NetfilterNoDivert}, false, }, { &Config{NetfilterMode: preftype.NetfilterNoDivert}, &Config{NetfilterMode: preftype.NetfilterNoDivert}, true, }, { &Config{NewMTU: 0}, &Config{NewMTU: 0}, true, }, { &Config{NewMTU: 1280}, &Config{NewMTU: 0}, false, }, } for i, tt := range tests { got := tt.a.Equal(tt.b) if got != tt.want { t.Errorf("%d. Equal = %v; want %v", i, got, tt.want) } } }