fix bugs

Author: patterniha

Diff for: app/dns/dns_test.go

@@ -76,6 +76,9 @@ func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeAAAA:
 			ans.MsgHdr.Rcode = dns.RcodeNameError
 
+		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeA:
+			ans.MsgHdr.Rcode = dns.RcodeNameError
+
 		case q.Name == "hostname." && q.Qtype == dns.TypeA:
 			rr, _ := dns.NewRR("hostname. IN A 127.0.0.1")
 			ans.Answer = append(ans.Answer, rr)

Diff for: app/dns/nameserver_tcp_test.go

@@ -50,7 +50,7 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 	ips2, _, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	}, false)
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {

Diff for: common/errors/multi_error.go

@@ -1,6 +1,7 @@
 package errors
 
 import (
+	"errors"
 	"strings"
 )
 
@@ -36,12 +37,12 @@ func AllEqual(expected error, actual error) bool {
 			return false
 		}
 		for _, err := range errs {
-			if err != expected {
+			if !errors.Is(err, expected) {
 				return false
 			}
 		}
 		return true
 	default:
-		return errs == expected
+		return errors.Is(errs, expected)
 	}
 }