bugfix: actually *use* the CH class

middleware/chaos/chaos.go

@@ -17,7 +17,7 @@ type Chaos struct {
 
 func (c Chaos) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
 	state := middleware.State{W: w, Req: r}
-	if state.QClass() != dns.ClassINET || state.QType() != dns.TypeTXT {
+	if state.QClass() != dns.ClassCHAOS || state.QType() != dns.TypeTXT {
 		return c.Next.ServeDNS(ctx, w, r)
 	}
 	m := new(dns.Msg)

middleware/chaos/chaos_test.go

@@ -54,6 +54,7 @@ func TestChaos(t *testing.T) {
 			test.qtype = dns.TypeTXT
 		}
 		req.SetQuestion(dns.Fqdn(test.qname), test.qtype)
+		req.Question[0].Qclass = dns.ClassCHAOS
 		em.Next = test.next
 
 		rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})