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package test
import (
"context"
"testing"
"time"
"github.com/coredns/coredns/pb"
"github.com/miekg/dns"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
func TestGrpc(t *testing.T) {
corefile := `grpc://.:0 {
whoami
}`
g, _, tcp, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer g.Stop()
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
conn, err := grpc.DialContext(ctx, tcp, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithBlock())
if err != nil {
t.Fatalf("Expected no error but got: %s", err)
}
defer conn.Close()
client := pb.NewDnsServiceClient(conn)
m := new(dns.Msg)
m.SetQuestion("whoami.example.org.", dns.TypeA)
msg, _ := m.Pack()
reply, err := client.Query(context.TODO(), &pb.DnsPacket{Msg: msg})
if err != nil {
t.Errorf("Expected no error but got: %s", err)
}
d := new(dns.Msg)
err = d.Unpack(reply.Msg)
if err != nil {
t.Errorf("Expected no error but got: %s", err)
}
if d.Rcode != dns.RcodeSuccess {
t.Errorf("Expected success but got %d", d.Rcode)
}
if len(d.Extra) != 2 {
t.Errorf("Expected 2 RRs in additional section, but got %d", len(d.Extra))
}
}
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