dnsforward -- add upstream tests.

This commit is contained in:
Eugene Bujak 2018-12-05 21:33:07 +03:00
parent 609523a59c
commit 2a1059107a
1 changed files with 84 additions and 0 deletions

View File

@ -0,0 +1,84 @@
package dnsforward
import (
"net"
"testing"
"github.com/miekg/dns"
)
func TestUpstreamDNS(t *testing.T) {
upstreams := []string{
"8.8.8.8:53",
"1.1.1.1",
"tcp://1.1.1.1:53",
"176.103.130.130:5353",
}
for _, input := range upstreams {
u, err := GetUpstream(input)
if err != nil {
t.Fatalf("Failed to choose upstream for %s: %s", input, err)
}
checkUpstream(t, u, input)
}
}
func TestUpstreamTLS(t *testing.T) {
upstreams := []string{
"tls://1.1.1.1",
"tls://9.9.9.9:853",
"tls://security-filter-dns.cleanbrowsing.org",
"tls://adult-filter-dns.cleanbrowsing.org:853",
}
for _, input := range upstreams {
u, err := GetUpstream(input)
if err != nil {
t.Fatalf("Failed to choose upstream for %s: %s", input, err)
}
checkUpstream(t, u, input)
}
}
func TestUpstreamHTTPS(t *testing.T) {
upstreams := []string{
"https://cloudflare-dns.com/dns-query",
"https://dns.google.com/experimental",
"https://doh.cleanbrowsing.org/doh/security-filter/",
}
for _, input := range upstreams {
u, err := GetUpstream(input)
if err != nil {
t.Fatalf("Failed to choose upstream for %s: %s", input, err)
}
checkUpstream(t, u, input)
}
}
func checkUpstream(t *testing.T, u Upstream, addr string) {
t.Helper()
req := dns.Msg{}
req.Id = dns.Id()
req.RecursionDesired = true
req.Question = []dns.Question{
{Name: "google-public-dns-a.google.com.", Qtype: dns.TypeA, Qclass: dns.ClassINET},
}
reply, err := u.Exchange(&req)
if err != nil {
t.Fatalf("Couldn't talk to upstream %s: %s", addr, err)
}
if len(reply.Answer) != 1 {
t.Fatalf("DNS upstream %s returned reply with wrong number of answers - %d", addr, len(reply.Answer))
}
if a, ok := reply.Answer[0].(*dns.A); ok {
if !net.IPv4(8, 8, 8, 8).Equal(a.A) {
t.Fatalf("DNS upstream %s returned wrong answer instead of 8.8.8.8: %v", addr, a.A)
}
} else {
t.Fatalf("DNS upstream %s returned wrong answer type instead of A: %v", addr, reply.Answer[0])
}
}