Created
February 2, 2020 12:30
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| package gossip_test | |
| import ( | |
| "context" | |
| "github.com/iwasaki-kenta/gossip" | |
| "github.com/perlin-network/noise" | |
| "github.com/perlin-network/noise/kademlia" | |
| "github.com/stretchr/testify/assert" | |
| "go.uber.org/goleak" | |
| "sync" | |
| "testing" | |
| ) | |
| func TestGossip(t *testing.T) { | |
| defer goleak.VerifyNone(t) | |
| nodes := make([]*noise.Node, 0, 16) | |
| overlays := make([]*kademlia.Protocol, 0, cap(nodes)) | |
| seen := make(map[noise.PublicKey]struct{}, cap(nodes)) | |
| cond := sync.NewCond(&sync.Mutex{}) | |
| for i := 0; i < cap(nodes); i++ { | |
| node, err := noise.NewNode() | |
| assert.NoError(t, err) | |
| defer node.Close() | |
| overlay := kademlia.New() | |
| node.Bind( | |
| overlay.Protocol(), | |
| gossip.New(overlay, | |
| gossip.WithEvents( | |
| gossip.Events{ | |
| OnGossipReceived: func(sender noise.ID, data []byte) error { | |
| cond.L.Lock() | |
| seen[node.ID().ID] = struct{}{} | |
| cond.Signal() | |
| cond.L.Unlock() | |
| return nil | |
| }, | |
| }, | |
| ), | |
| ).Protocol(), | |
| ) | |
| assert.NoError(t, node.Listen()) | |
| nodes = append(nodes, node) | |
| overlays = append(overlays, overlay) | |
| } | |
| leader, err := noise.NewNode() | |
| assert.NoError(t, err) | |
| defer leader.Close() | |
| overlay := kademlia.New() | |
| hub := gossip.New(overlay) | |
| leader.Bind( | |
| overlay.Protocol(), | |
| hub.Protocol(), | |
| ) | |
| assert.NoError(t, leader.Listen()) | |
| var wg sync.WaitGroup | |
| wg.Add(len(nodes) * (len(nodes) - 1)) | |
| for i := range nodes { | |
| for j := range nodes { | |
| i, j := i, j | |
| if i == j { | |
| continue | |
| } | |
| go func() { | |
| _, err := nodes[i].Ping(context.TODO(), leader.Addr()) | |
| assert.NoError(t, err) | |
| _, err = nodes[i].Ping(context.TODO(), nodes[j].Addr()) | |
| assert.NoError(t, err) | |
| wg.Done() | |
| }() | |
| } | |
| } | |
| wg.Wait() | |
| for _, node := range nodes { | |
| for _, client := range append(node.Inbound(), node.Outbound()...) { | |
| client.WaitUntilReady() | |
| } | |
| } | |
| assert.NoError(t, hub.Push(context.TODO(), []byte("hello!"))) | |
| cond.L.Lock() | |
| for len(seen) != len(nodes) { | |
| cond.Wait() | |
| } | |
| cond.L.Unlock() | |
| } |
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