mirror of
https://github.com/tailscale/tailscale.git
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54e33b511a
This was meant to be part of 53a2f63658 earlier
but I guess I failed at git.
Updates #2436
Updates tailscale/corp#2250
Updates tailscale/corp#2238
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package resolver
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"time"
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"inet.af/netaddr"
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)
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func (rr resolverAndDelay) String() string {
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return fmt.Sprintf("%v+%v", rr.ipp, rr.startDelay)
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}
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func TestResolversWithDelays(t *testing.T) {
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// query
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q := func(ss ...string) (ipps []netaddr.IPPort) {
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for _, s := range ss {
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ipps = append(ipps, netaddr.MustParseIPPort(s))
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}
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return
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}
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// output
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o := func(ss ...string) (rr []resolverAndDelay) {
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for _, s := range ss {
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var d time.Duration
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if i := strings.Index(s, "+"); i != -1 {
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var err error
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d, err = time.ParseDuration(s[i+1:])
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if err != nil {
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panic(fmt.Sprintf("parsing duration in %q: %v", s, err))
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}
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s = s[:i]
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}
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rr = append(rr, resolverAndDelay{
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ipp: netaddr.MustParseIPPort(s),
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startDelay: d,
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})
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}
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return
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}
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tests := []struct {
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name string
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in []netaddr.IPPort
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want []resolverAndDelay
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}{
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{
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name: "unknown-no-delays",
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in: q("1.2.3.4:53", "2.3.4.5:53"),
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want: o("1.2.3.4:53", "2.3.4.5:53"),
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},
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{
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name: "google-all-ipv4",
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in: q("8.8.8.8:53", "8.8.4.4:53"),
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want: o("8.8.8.8:53", "8.8.4.4:53+200ms"),
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},
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{
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name: "google-only-ipv6",
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in: q("[2001:4860:4860::8888]:53", "[2001:4860:4860::8844]:53"),
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want: o("[2001:4860:4860::8888]:53", "[2001:4860:4860::8844]:53+200ms"),
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},
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{
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name: "google-all-four",
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in: q("8.8.8.8:53", "8.8.4.4:53", "[2001:4860:4860::8888]:53", "[2001:4860:4860::8844]:53"),
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want: o("8.8.8.8:53", "8.8.4.4:53+200ms", "[2001:4860:4860::8888]:53+2.5s", "[2001:4860:4860::8844]:53+2.7s"),
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},
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{
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name: "quad9-one-v4-one-v6",
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in: q("9.9.9.9:53", "[2620:fe::fe]:53"),
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want: o("9.9.9.9:53", "[2620:fe::fe]:53+200ms"),
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got := resolversWithDelays(tt.in)
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if !reflect.DeepEqual(got, tt.want) {
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t.Errorf("got %v; want %v", got, tt.want)
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}
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})
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}
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}
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