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// 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 network
import (
"io/ioutil"
"os"
"testing"
"time"
p2ptest "github.com/dexon-foundation/dexon/p2p/testing"
"github.com/dexon-foundation/dexon/swarm/state"
)
func newHiveTester(t *testing.T, params *HiveParams, n int, store state.Store) (*bzzTester, *Hive) {
// setup
addr := RandomAddr() // tested peers peer address
to := NewKademlia(addr.OAddr, NewKadParams())
pp := NewHive(params, to, store) // hive
return newBzzBaseTester(t, n, addr, DiscoverySpec, pp.Run), pp
}
// TestRegisterAndConnect verifies that the protocol runs successfully
// and that the peer connection exists afterwards
func TestRegisterAndConnect(t *testing.T) {
params := NewHiveParams()
s, pp := newHiveTester(t, params, 1, nil)
node := s.Nodes[0]
raddr := NewAddr(node)
pp.Register(raddr)
// start the hive
err := pp.Start(s.Server)
if err != nil {
t.Fatal(err)
}
defer pp.Stop()
// both hive connect and disconect check have time delays
// therefore we need to verify that peer is connected
// so that we are sure that the disconnect timeout doesn't complete
// before the hive connect method is run at least once
timeout := time.After(time.Second)
for {
select {
case <-timeout:
t.Fatalf("expected connection")
default:
}
i := 0
pp.Kademlia.EachConn(nil, 256, func(addr *Peer, po int) bool {
i++
return true
})
if i > 0 {
break
}
time.Sleep(time.Millisecond)
}
// check that the connection actually exists
// the timeout error means no disconnection events
// were received within the a certain timeout
err = s.TestDisconnected(&p2ptest.Disconnect{
Peer: s.Nodes[0].ID(),
Error: nil,
})
if err == nil || err.Error() != "timed out waiting for peers to disconnect" {
t.Fatalf("expected no disconnection event")
}
}
// TestHiveStatePersistance creates a protocol simulation with n peers for a node
// After protocols complete, the node is shut down and the state is stored.
// Another simulation is created, where 0 nodes are created, but where the stored state is passed
// The test succeeds if all the peers from the stored state are known after the protocols of the
// second simulation have completed
//
// Actual connectivity is not in scope for this test, as the peers loaded from state are not known to
// the simulation; the test only verifies that the peers are known to the node
func TestHiveStatePersistance(t *testing.T) {
dir, err := ioutil.TempDir("", "hive_test_store")
if err != nil {
panic(err)
}
defer os.RemoveAll(dir)
store, err := state.NewDBStore(dir) //start the hive with an empty dbstore
if err != nil {
t.Fatal(err)
}
params := NewHiveParams()
s, pp := newHiveTester(t, params, 5, store)
peers := make(map[string]bool)
for _, node := range s.Nodes {
raddr := NewAddr(node)
pp.Register(raddr)
peers[raddr.String()] = true
}
// start and stop the hive
// the known peers should be saved upon stopping
err = pp.Start(s.Server)
if err != nil {
t.Fatal(err)
}
pp.Stop()
store.Close()
// start the hive with an empty dbstore
persistedStore, err := state.NewDBStore(dir)
if err != nil {
t.Fatal(err)
}
s1, pp := newHiveTester(t, params, 0, persistedStore)
// start the hive and check that we know of all expected peers
pp.Start(s1.Server)
i := 0
pp.Kademlia.EachAddr(nil, 256, func(addr *BzzAddr, po int) bool {
delete(peers, addr.String())
i++
return true
})
// TODO remove this line when verified that test passes
time.Sleep(time.Second)
if i != 5 {
t.Fatalf("invalid number of entries: got %v, want %v", i, 5)
}
if len(peers) != 0 {
t.Fatalf("%d peers left over: %v", len(peers), peers)
}
}
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