105 lines
2.3 KiB
Go
105 lines
2.3 KiB
Go
// Copyright 2018 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 simulation
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
// TestPeerEvents creates simulation, adds two nodes,
|
|
// register for peer events, connects nodes in a chain
|
|
// and waits for the number of connection events to
|
|
// be received.
|
|
func TestPeerEvents(t *testing.T) {
|
|
sim := New(noopServiceFuncMap)
|
|
defer sim.Close()
|
|
|
|
_, err := sim.AddNodes(2)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
events := sim.PeerEvents(ctx, sim.NodeIDs())
|
|
|
|
// two nodes -> two connection events
|
|
expectedEventCount := 2
|
|
|
|
var wg sync.WaitGroup
|
|
wg.Add(expectedEventCount)
|
|
|
|
go func() {
|
|
for e := range events {
|
|
if e.Error != nil {
|
|
if e.Error == context.Canceled {
|
|
return
|
|
}
|
|
t.Error(e.Error)
|
|
continue
|
|
}
|
|
wg.Done()
|
|
}
|
|
}()
|
|
|
|
err = sim.Net.ConnectNodesChain(sim.NodeIDs())
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
wg.Wait()
|
|
}
|
|
|
|
func TestPeerEventsTimeout(t *testing.T) {
|
|
sim := New(noopServiceFuncMap)
|
|
defer sim.Close()
|
|
|
|
_, err := sim.AddNodes(2)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
|
|
defer cancel()
|
|
events := sim.PeerEvents(ctx, sim.NodeIDs())
|
|
|
|
done := make(chan struct{})
|
|
go func() {
|
|
for e := range events {
|
|
if e.Error == context.Canceled {
|
|
return
|
|
}
|
|
if e.Error == context.DeadlineExceeded {
|
|
close(done)
|
|
return
|
|
} else {
|
|
t.Fatal(e.Error)
|
|
}
|
|
}
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(time.Second):
|
|
t.Error("no context deadline received")
|
|
case <-done:
|
|
// all good, context deadline detected
|
|
}
|
|
}
|