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package p2p
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"go.uber.org/zap"
)
// TestPeerToPeerCommunication tests if two peers can communicate.
func TestPeerToPeerCommunication(t *testing.T) {
// Create a mock of the first peer (peer-1)
peer1Opts := TCPNetworkOpts{
ListenAddr: ":9001",
HandshakeFn: DefaultHandshake,
RetryDelay: 2 * time.Second,
Logger: zap.L(),
}
peer1 := NewTCPNetwork("peer-1", peer1Opts)
defer peer1.Close()
time.Sleep(3 * time.Second)
peer1.RegisterHandler(func(msg Message) {
assert.Equal(t, "Hey from peer-2!", string(msg.Payload))
})
// Create a mock of the second peer (peer-2)
peer2Opts := TCPNetworkOpts{
ListenAddr: ":9002",
HandshakeFn: DefaultHandshake,
RetryDelay: 2 * time.Second,
Logger: zap.L(),
OnReceiveFn: func(msg Message) {
assert.Equal(t, "Hey from peer-1!", string(msg.Payload))
},
}
peer2 := NewTCPNetwork("peer-2", peer2Opts)
defer peer2.Close()
time.Sleep(3 * time.Second)
// Start the first peer and add the second peer
peer1.AddPeer("peer-2", peer2.ListenAddr)
peer2.AddPeer("peer-1", peer1.ListenAddr)
// Wait for connections to be established with a timeout
time.Sleep(5 * time.Second)
// Send a message from peer-1 to peer-2
err := peer1.Send("peer-2", []byte("simple-msg"), []byte("Hey from peer-1!"))
assert.NoError(t, err)
err = peer2.Send("peer-1", []byte("simple-msg"), []byte("Hey from peer-2!"))
assert.NoError(t, err)
// Allow some time for the message to be received and handled
time.Sleep(2 * time.Second)
}
// TestSendFailure tests if sending a message fails when no connection exists.
func TestSendFailure(t *testing.T) {
peer1Opts := TCPNetworkOpts{
ListenAddr: ":9003",
HandshakeFn: DefaultHandshake,
RetryDelay: time.Second * 2,
Logger: zap.L(),
}
peer1 := NewTCPNetwork("peer-1", peer1Opts)
defer peer1.Close()
// Create a mock of the second peer (peer-2) - but don't add it to peer1
peer2Opts := TCPNetworkOpts{
ListenAddr: ":9004",
HandshakeFn: DefaultHandshake,
RetryDelay: time.Second * 2,
Logger: zap.L(),
}
peer2 := NewTCPNetwork("peer-2", peer2Opts)
defer peer2.Close()
// Attempt to send a message without establishing a connection first
err := peer1.Send("peer-2", []byte("msg"), []byte("Message without connection"))
assert.Error(t, err, "Expected error when sending to a non-connected peer")
}
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