plugeth/swarm/network/simulation/kademlia_test.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"

	"github.com/ethereum/go-ethereum/node"
	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
	"github.com/ethereum/go-ethereum/swarm/network"
)

func TestWaitTillHealthy(t *testing.T) {

	sim := 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())
			// store kademlia in node's bucket under BucketKeyKademlia
			// so that it can be found by WaitTillHealthy method.
			b.Store(BucketKeyKademlia, kad)
			return network.NewBzz(config, kad, nil, nil, nil), nil, nil
		},
	})
	defer sim.Close()

	_, err := sim.AddNodesAndConnectRing(10)
	if err != nil {
		t.Fatal(err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), 120*time.Second)
	defer cancel()
	ill, err := sim.WaitTillHealthy(ctx, 2)
	if err != nil {
		for id, kad := range ill {
			t.Log("Node", id)
			t.Log(kad.String())
		}
		if err != nil {
			t.Fatal(err)
		}
	}
}