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|
package grpc
import (
"context"
"errors"
"testing"
"github.com/coredns/coredns/pb"
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/test"
"github.com/miekg/dns"
)
func TestGRPC(t *testing.T) {
m := &dns.Msg{}
msg, err := m.Pack()
if err != nil {
t.Fatalf("Error packing response: %s", err.Error())
}
dnsPacket := &pb.DnsPacket{Msg: msg}
tests := map[string]struct {
proxies []*Proxy
wantErr bool
}{
"single_proxy_ok": {
proxies: []*Proxy{
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
},
wantErr: false,
},
"multiple_proxies_ok": {
proxies: []*Proxy{
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
},
wantErr: false,
},
"single_proxy_ko": {
proxies: []*Proxy{
{client: &testServiceClient{dnsPacket: nil, err: errors.New("")}},
},
wantErr: true,
},
"multiple_proxies_one_ko": {
proxies: []*Proxy{
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
{client: &testServiceClient{dnsPacket: nil, err: errors.New("")}},
{client: &testServiceClient{dnsPacket: dnsPacket, err: nil}},
},
wantErr: false,
},
"multiple_proxies_ko": {
proxies: []*Proxy{
{client: &testServiceClient{dnsPacket: nil, err: errors.New("")}},
{client: &testServiceClient{dnsPacket: nil, err: errors.New("")}},
{client: &testServiceClient{dnsPacket: nil, err: errors.New("")}},
},
wantErr: true,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
g := newGRPC()
g.from = "."
g.proxies = tt.proxies
rec := dnstest.NewRecorder(&test.ResponseWriter{})
if _, err := g.ServeDNS(context.TODO(), rec, m); err != nil && !tt.wantErr {
t.Fatal("Expected to receive reply, but didn't")
}
})
}
}
|
