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- // 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 simulations
- import (
- "testing"
- "github.com/ethereum/go-ethereum/p2p"
- "github.com/ethereum/go-ethereum/p2p/enode"
- "github.com/ethereum/go-ethereum/p2p/enr"
- "github.com/ethereum/go-ethereum/rpc"
- )
- // NoopService is the service that does not do anything
- // but implements node.Service interface.
- type NoopService struct {
- c map[enode.ID]chan struct{}
- }
- func NewNoopService(ackC map[enode.ID]chan struct{}) *NoopService {
- return &NoopService{
- c: ackC,
- }
- }
- func (t *NoopService) Protocols() []p2p.Protocol {
- return []p2p.Protocol{
- {
- Name: "noop",
- Version: 666,
- Length: 0,
- Run: func(peer *p2p.Peer, rw p2p.MsgReadWriter) error {
- if t.c != nil {
- t.c[peer.ID()] = make(chan struct{})
- close(t.c[peer.ID()])
- }
- rw.ReadMsg()
- return nil
- },
- NodeInfo: func() interface{} {
- return struct{}{}
- },
- PeerInfo: func(id enode.ID) interface{} {
- return struct{}{}
- },
- Attributes: []enr.Entry{},
- },
- }
- }
- func (t *NoopService) APIs() []rpc.API {
- return []rpc.API{}
- }
- func (t *NoopService) Start() error {
- return nil
- }
- func (t *NoopService) Stop() error {
- return nil
- }
- func VerifyRing(t *testing.T, net *Network, ids []enode.ID) {
- t.Helper()
- n := len(ids)
- for i := 0; i < n; i++ {
- for j := i + 1; j < n; j++ {
- c := net.GetConn(ids[i], ids[j])
- if i == j-1 || (i == 0 && j == n-1) {
- if c == nil {
- t.Errorf("nodes %v and %v are not connected, but they should be", i, j)
- }
- } else {
- if c != nil {
- t.Errorf("nodes %v and %v are connected, but they should not be", i, j)
- }
- }
- }
- }
- }
- func VerifyChain(t *testing.T, net *Network, ids []enode.ID) {
- t.Helper()
- n := len(ids)
- for i := 0; i < n; i++ {
- for j := i + 1; j < n; j++ {
- c := net.GetConn(ids[i], ids[j])
- if i == j-1 {
- if c == nil {
- t.Errorf("nodes %v and %v are not connected, but they should be", i, j)
- }
- } else {
- if c != nil {
- t.Errorf("nodes %v and %v are connected, but they should not be", i, j)
- }
- }
- }
- }
- }
- func VerifyFull(t *testing.T, net *Network, ids []enode.ID) {
- t.Helper()
- n := len(ids)
- var connections int
- for i, lid := range ids {
- for _, rid := range ids[i+1:] {
- if net.GetConn(lid, rid) != nil {
- connections++
- }
- }
- }
- want := n * (n - 1) / 2
- if connections != want {
- t.Errorf("wrong number of connections, got: %v, want: %v", connections, want)
- }
- }
- func VerifyStar(t *testing.T, net *Network, ids []enode.ID, centerIndex int) {
- t.Helper()
- n := len(ids)
- for i := 0; i < n; i++ {
- for j := i + 1; j < n; j++ {
- c := net.GetConn(ids[i], ids[j])
- if i == centerIndex || j == centerIndex {
- if c == nil {
- t.Errorf("nodes %v and %v are not connected, but they should be", i, j)
- }
- } else {
- if c != nil {
- t.Errorf("nodes %v and %v are connected, but they should not be", i, j)
- }
- }
- }
- }
- }
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