// 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"
"fmt"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
"github.com/ethereum/go-ethereum/swarm/network"
)
func TestUpDownNodeIDs(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
ids, err := sim.AddNodes(10)
if err != nil {
t.Fatal(err)
}
gotIDs := sim.NodeIDs()
if !equalNodeIDs(ids, gotIDs) {
t.Error("returned nodes are not equal to added ones")
}
stoppedIDs, err := sim.StopRandomNodes(3)
if err != nil {
t.Fatal(err)
}
gotIDs = sim.UpNodeIDs()
for _, id := range gotIDs {
if !sim.Net.GetNode(id).Up {
t.Errorf("node %s should not be down", id)
}
}
if !equalNodeIDs(ids, append(gotIDs, stoppedIDs...)) {
t.Error("returned nodes are not equal to added ones")
}
gotIDs = sim.DownNodeIDs()
for _, id := range gotIDs {
if sim.Net.GetNode(id).Up {
t.Errorf("node %s should not be up", id)
}
}
if !equalNodeIDs(stoppedIDs, gotIDs) {
t.Error("returned nodes are not equal to the stopped ones")
}
}
func equalNodeIDs(one, other []enode.ID) bool {
if len(one) != len(other) {
return false
}
var count int
for _, a := range one {
var found bool
for _, b := range other {
if a == b {
found = true
break
}
}
if found {
count++
} else {
return false
}
}
return count == len(one)
}
func TestAddNode(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
id, err := sim.AddNode()
if err != nil {
t.Fatal(err)
}
n := sim.Net.GetNode(id)
if n == nil {
t.Fatal("node not found")
}
if !n.Up {
t.Error("node not started")
}
}
func TestAddNodeWithMsgEvents(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
id, err := sim.AddNode(AddNodeWithMsgEvents(true))
if err != nil {
t.Fatal(err)
}
if !sim.Net.GetNode(id).Config.EnableMsgEvents {
t.Error("EnableMsgEvents is false")
}
id, err = sim.AddNode(AddNodeWithMsgEvents(false))
if err != nil {
t.Fatal(err)
}
if sim.Net.GetNode(id).Config.EnableMsgEvents {
t.Error("EnableMsgEvents is true")
}
}
func TestAddNodeWithService(t *testing.T) {
sim := New(map[string]ServiceFunc{
"noop1": noopServiceFunc,
"noop2": noopServiceFunc,
})
defer sim.Close()
id, err := sim.AddNode(AddNodeWithService("noop1"))
if err != nil {
t.Fatal(err)
}
n := sim.Net.GetNode(id).Node.(*adapters.SimNode)
if n.Service("noop1") == nil {
t.Error("service noop1 not found on node")
}
if n.Service("noop2") != nil {
t.Error("service noop2 should not be found on node")
}
}
func TestAddNodes(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
nodesCount := 12
ids, err := sim.AddNodes(nodesCount)
if err != nil {
t.Fatal(err)
}
count := len(ids)
if count != nodesCount {
t.Errorf("expected %v nodes, got %v", nodesCount, count)
}
count = len(sim.Net.GetNodes())
if count != nodesCount {
t.Errorf("expected %v nodes, got %v", nodesCount, count)
}
}
func TestAddNodesAndConnectFull(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
n := 12
ids, err := sim.AddNodesAndConnectFull(n)
if err != nil {
t.Fatal(err)
}
testFull(t, sim, ids)
}
func TestAddNodesAndConnectChain(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
_, err := sim.AddNodesAndConnectChain(12)
if err != nil {
t.Fatal(err)
}
// add another set of nodes to test
// if two chains are connected
_, err = sim.AddNodesAndConnectChain(7)
if err != nil {
t.Fatal(err)
}
testChain(t, sim, sim.UpNodeIDs())
}
func TestAddNodesAndConnectRing(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
ids, err := sim.AddNodesAndConnectRing(12)
if err != nil {
t.Fatal(err)
}
testRing(t, sim, ids)
}
func TestAddNodesAndConnectStar(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
ids, err := sim.AddNodesAndConnectStar(12)
if err != nil {
t.Fatal(err)
}
testStar(t, sim, ids, 0)
}
//To test that uploading a snapshot works
func TestUploadSnapshot(t *testing.T) {
log.Debug("Creating simulation")
s := New(map[string]ServiceFunc{
"bzz": func(ctx *adapters.ServiceContext, b *sync.Map) (node.Service, func(), error) {
addr := network.NewAddr(ctx.Config.Node())
hp := network.NewHiveParams()
hp.Discovery = false
config := &network.BzzConfig{
OverlayAddr: addr.Over(),
UnderlayAddr: addr.Under(),
HiveParams: hp,
}
kad := network.NewKademlia(addr.Over(), network.NewKadParams())
return network.NewBzz(config, kad, nil, nil, nil), nil, nil
},
})
defer s.Close()
nodeCount := 16
log.Debug("Uploading snapshot")
err := s.UploadSnapshot(fmt.Sprintf("../stream/testing/snapshot_%d.json", nodeCount))
if err != nil {
t.Fatalf("Error uploading snapshot to simulation network: %v", err)
}
ctx := context.Background()
log.Debug("Starting simulation...")
s.Run(ctx, func(ctx context.Context, sim *Simulation) error {
log.Debug("Checking")
nodes := sim.UpNodeIDs()
if len(nodes) != nodeCount {
t.Fatal("Simulation network node number doesn't match snapshot node number")
}
return nil
})
log.Debug("Done.")
}
func TestPivotNode(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
id, err := sim.AddNode()
if err != nil {
t.Fatal(err)
}
id2, err := sim.AddNode()
if err != nil {
t.Fatal(err)
}
if sim.PivotNodeID() != nil {
t.Error("expected no pivot node")
}
sim.SetPivotNode(id)
pid := sim.PivotNodeID()
if pid == nil {
t.Error("pivot node not set")
} else if *pid != id {
t.Errorf("expected pivot node %s, got %s", id, *pid)
}
sim.SetPivotNode(id2)
pid = sim.PivotNodeID()
if pid == nil {
t.Error("pivot node not set")
} else if *pid != id2 {
t.Errorf("expected pivot node %s, got %s", id2, *pid)
}
}
func TestStartStopNode(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
id, err := sim.AddNode()
if err != nil {
t.Fatal(err)
}
n := sim.Net.GetNode(id)
if n == nil {
t.Fatal("node not found")
}
if !n.Up {
t.Error("node not started")
}
err = sim.StopNode(id)
if err != nil {
t.Fatal(err)
}
if n.Up {
t.Error("node not stopped")
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
err = sim.StartNode(id)
if err != nil {
t.Fatal(err)
}
if !n.Up {
t.Error("node not started")
}
}
func TestStartStopRandomNode(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
_, err := sim.AddNodes(3)
if err != nil {
t.Fatal(err)
}
id, err := sim.StopRandomNode()
if err != nil {
t.Fatal(err)
}
n := sim.Net.GetNode(id)
if n == nil {
t.Fatal("node not found")
}
if n.Up {
t.Error("node not stopped")
}
id2, err := sim.StopRandomNode()
if err != nil {
t.Fatal(err)
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
idStarted, err := sim.StartRandomNode()
if err != nil {
t.Fatal(err)
}
if idStarted != id && idStarted != id2 {
t.Error("unexpected started node ID")
}
}
func TestStartStopRandomNodes(t *testing.T) {
sim := New(noopServiceFuncMap)
defer sim.Close()
_, err := sim.AddNodes(10)
if err != nil {
t.Fatal(err)
}
ids, err := sim.StopRandomNodes(3)
if err != nil {
t.Fatal(err)
}
for _, id := range ids {
n := sim.Net.GetNode(id)
if n == nil {
t.Fatal("node not found")
}
if n.Up {
t.Error("node not stopped")
}
}
// Sleep here to ensure that Network.watchPeerEvents defer function
// has set the `node.Up = false` before we start the node again.
// p2p/simulations/network.go:215
//
// The same node is stopped and started again, and upon start
// watchPeerEvents is started in a goroutine. If the node is stopped
// and then very quickly started, that goroutine may be scheduled later
// then start and force `node.Up = false` in its defer function.
// This will make this test unreliable.
time.Sleep(time.Second)
ids, err = sim.StartRandomNodes(2)
if err != nil {
t.Fatal(err)
}
for _, id := range ids {
n := sim.Net.GetNode(id)
if n == nil {
t.Fatal("node not found")
}
if !n.Up {
t.Error("node not started")
}
}
}
