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package grpc
import (
"context"
"errors"
"testing"
"github.com/coredns/coredns/pb"
"github.com/miekg/dns"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
func TestProxy(t *testing.T) {
tests := map[string]struct {
p *Proxy
res *dns.Msg
wantErr bool
}{
"response_ok": {
p: &Proxy{},
res: &dns.Msg{},
wantErr: false,
},
"nil_response": {
p: &Proxy{},
res: nil,
wantErr: true,
},
"tls": {
p: &Proxy{dialOpts: []grpc.DialOption{grpc.WithTransportCredentials(credentials.NewTLS(nil))}},
res: &dns.Msg{},
wantErr: false,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
var mock *testServiceClient
if tt.res != nil {
msg, err := tt.res.Pack()
if err != nil {
t.Fatalf("Error packing response: %s", err.Error())
}
mock = &testServiceClient{&pb.DnsPacket{Msg: msg}, nil}
} else {
mock = &testServiceClient{nil, errors.New("server error")}
}
tt.p.client = mock
_, err := tt.p.query(context.TODO(), new(dns.Msg))
if err != nil && !tt.wantErr {
t.Fatalf("Error query(): %s", err.Error())
}
})
}
}
type testServiceClient struct {
dnsPacket *pb.DnsPacket
err error
}
func (m testServiceClient) Query(ctx context.Context, in *pb.DnsPacket, opts ...grpc.CallOption) (*pb.DnsPacket, error) {
return m.dnsPacket, m.err
}
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