mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
3.2 KiB
119 lines
3.2 KiB
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
package rpc
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net"
|
|
"testing"
|
|
"time"
|
|
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
type NotificationTestService struct{}
|
|
|
|
var (
|
|
unsubCallbackCalled = false
|
|
)
|
|
|
|
func (s *NotificationTestService) Unsubscribe(subid string) {
|
|
unsubCallbackCalled = true
|
|
}
|
|
|
|
func (s *NotificationTestService) SomeSubscription(ctx context.Context, n, val int) (Subscription, error) {
|
|
notifier, supported := ctx.Value(NotifierContextKey).(Notifier)
|
|
if !supported {
|
|
return nil, ErrNotificationsUnsupported
|
|
}
|
|
|
|
// by explicitly creating an subscription we make sure that the subscription id is send back to the client
|
|
// before the first subscription.Notify is called. Otherwise the events might be send before the response
|
|
// for the eth_subscribe method.
|
|
subscription, err := notifier.NewSubscription(s.Unsubscribe)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
go func() {
|
|
for i := 0; i < n; i++ {
|
|
if err := subscription.Notify(val + i); err != nil {
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
return subscription, nil
|
|
}
|
|
|
|
func TestNotifications(t *testing.T) {
|
|
server := NewServer()
|
|
service := &NotificationTestService{}
|
|
|
|
if err := server.RegisterName("eth", service); err != nil {
|
|
t.Fatalf("unable to register test service %v", err)
|
|
}
|
|
|
|
clientConn, serverConn := net.Pipe()
|
|
|
|
go server.ServeCodec(NewJSONCodec(serverConn), OptionMethodInvocation|OptionSubscriptions)
|
|
|
|
out := json.NewEncoder(clientConn)
|
|
in := json.NewDecoder(clientConn)
|
|
|
|
n := 5
|
|
val := 12345
|
|
request := map[string]interface{}{
|
|
"id": 1,
|
|
"method": "eth_subscribe",
|
|
"version": "2.0",
|
|
"params": []interface{}{"someSubscription", n, val},
|
|
}
|
|
|
|
// create subscription
|
|
if err := out.Encode(request); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var subid string
|
|
response := JSONSuccessResponse{Result: subid}
|
|
if err := in.Decode(&response); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var ok bool
|
|
if subid, ok = response.Result.(string); !ok {
|
|
t.Fatalf("expected subscription id, got %T", response.Result)
|
|
}
|
|
|
|
for i := 0; i < n; i++ {
|
|
var notification jsonNotification
|
|
if err := in.Decode(¬ification); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
|
|
if int(notification.Params.Result.(float64)) != val+i {
|
|
t.Fatalf("expected %d, got %d", val+i, notification.Params.Result)
|
|
}
|
|
}
|
|
|
|
clientConn.Close() // causes notification unsubscribe callback to be called
|
|
time.Sleep(1 * time.Second)
|
|
|
|
if !unsubCallbackCalled {
|
|
t.Error("unsubscribe callback not called after closing connection")
|
|
}
|
|
}
|
|
|