// Copyright (c) Tailscale Inc & AUTHORS // SPDX-License-Identifier: BSD-3-Clause package publicdns import ( "net/netip" "reflect" "testing" ) func TestInit(t *testing.T) { for _, baseKey := range KnownDoHPrefixes() { baseSet := DoHIPsOfBase(baseKey) for _, addr := range baseSet { back, only, ok := DoHEndpointFromIP(addr) if !ok { t.Errorf("DoHEndpointFromIP(%v) not mapped back to %v", addr, baseKey) continue } if only { t.Errorf("unexpected DoH only bit set for %v", addr) } if back != baseKey { t.Errorf("Expected %v to map to %s, got %s", addr, baseKey, back) } } } } func TestDoHV6(t *testing.T) { tests := []struct { in string firstIP netip.Addr want bool }{ {"https://cloudflare-dns.com/dns-query", netip.MustParseAddr("2606:4700:4700::1111"), true}, {"https://dns.google/dns-query", netip.MustParseAddr("2001:4860:4860::8888"), true}, {"bogus", netip.Addr{}, false}, } for _, test := range tests { t.Run(test.in, func(t *testing.T) { ip, ok := DoHV6(test.in) if ok != test.want || ip != test.firstIP { t.Errorf("DohV6 got (%v: IPv6 %v) for %v, want (%v: IPv6 %v)", ip, ok, test.in, test.firstIP, test.want) } }) } } func TestDoHIPsOfBase(t *testing.T) { ips := func(s ...string) (ret []netip.Addr) { for _, ip := range s { ret = append(ret, netip.MustParseAddr(ip)) } return } tests := []struct { base string want []netip.Addr }{ { base: "https://cloudflare-dns.com/dns-query", want: ips("1.1.1.1", "1.0.0.1", "2606:4700:4700::1111", "2606:4700:4700::1001"), }, { base: "https://dns.nextdns.io/", want: ips(), }, { base: "https://dns.nextdns.io/ff", want: ips( "45.90.28.0", "45.90.30.0", "2a07:a8c0::ff", "2a07:a8c1::ff", ), }, { base: "https://dns.nextdns.io/c3a884", want: ips( "45.90.28.0", "45.90.30.0", "2a07:a8c0::c3:a884", "2a07:a8c1::c3:a884", ), }, { base: "https://dns.nextdns.io/112233445566778899aabbcc", want: ips( "45.90.28.0", "45.90.30.0", "2a07:a8c0:1122:3344:5566:7788:99aa:bbcc", "2a07:a8c1:1122:3344:5566:7788:99aa:bbcc", ), }, { base: "https://dns.nextdns.io/112233445566778899aabbccdd", want: ips(), // nothing; profile length is over 12 bytes }, { base: "https://dns.nextdns.io/c3a884/with/more/stuff", want: ips( "45.90.28.0", "45.90.30.0", "2a07:a8c0::c3:a884", "2a07:a8c1::c3:a884", ), }, { base: "https://dns.nextdns.io/c3a884?with=query¶ms", want: ips( "45.90.28.0", "45.90.30.0", "2a07:a8c0::c3:a884", "2a07:a8c1::c3:a884", ), }, { base: "https://dns.controld.com/hyq3ipr2ct", want: ips( "76.76.2.22", "76.76.10.22", "2606:1a40:0:6:7b5b:5949:35ad:0", "2606:1a40:1:6:7b5b:5949:35ad:0", ), }, { base: "https://dns.controld.com/112233445566778899aabbcc", want: ips( "76.76.2.22", "76.76.10.22", "2606:1a40:0:ffff:ffff:ffff:ffff:0", "2606:1a40:1:ffff:ffff:ffff:ffff:0", ), }, } for _, tt := range tests { got := DoHIPsOfBase(tt.base) if !reflect.DeepEqual(got, tt.want) { t.Errorf("DoHIPsOfBase(%q) = %v; want %v", tt.base, got, tt.want) } } }