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package dnsserver
import (
"context"
"testing"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/test"
"github.com/miekg/dns"
)
type testPlugin struct{}
func (tp testPlugin) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
return 0, nil
}
func (tp testPlugin) Name() string { return "testplugin" }
func testConfig(transport string, p plugin.Handler) *Config {
c := &Config{
Zone: "example.com.",
Transport: transport,
ListenHosts: []string{"127.0.0.1"},
Port: "53",
Debug: false,
}
c.AddPlugin(func(next plugin.Handler) plugin.Handler { return p })
return c
}
func TestNewServer(t *testing.T) {
_, err := NewServer("127.0.0.1:53", []*Config{testConfig("dns", testPlugin{})})
if err != nil {
t.Errorf("Expected no error for NewServer, got %s", err)
}
_, err = NewServergRPC("127.0.0.1:53", []*Config{testConfig("grpc", testPlugin{})})
if err != nil {
t.Errorf("Expected no error for NewServergRPC, got %s", err)
}
_, err = NewServerTLS("127.0.0.1:53", []*Config{testConfig("tls", testPlugin{})})
if err != nil {
t.Errorf("Expected no error for NewServerTLS, got %s", err)
}
}
func TestIncrementDepthAndCheck(t *testing.T) {
ctx := context.Background()
var err error
for i := 0; i <= maxreentries; i++ {
ctx, err = incrementDepthAndCheck(ctx)
if err != nil {
t.Errorf("Expected no error for depthCheck (i=%v), got %s", i, err)
}
}
_, err = incrementDepthAndCheck(ctx)
if err == nil {
t.Errorf("Expected error for depthCheck (i=%v)", maxreentries+1)
}
}
func BenchmarkCoreServeDNS(b *testing.B) {
s, err := NewServer("127.0.0.1:53", []*Config{testConfig("dns", testPlugin{})})
if err != nil {
b.Errorf("Expected no error for NewServer, got %s", err)
}
ctx := context.TODO()
w := &test.ResponseWriter{}
m := new(dns.Msg)
m.SetQuestion("aaa.example.com.", dns.TypeTXT)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
s.ServeDNS(ctx, w, m)
}
}
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