refactor p2p unit tests

Signed-off-by: Joshua Kim <20001595+joshua-kim@users.noreply.github.com>

network/p2p/client.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 
 	"github.com/ava-labs/avalanchego/ids"
-	"github.com/ava-labs/avalanchego/snow/engine/common"
 	"github.com/ava-labs/avalanchego/utils/set"
 )
 
@@ -39,11 +38,17 @@ type CrossChainAppResponseCallback func(
 	err error,
 )
 
+type clientSender interface {
+	AppRequestSender
+	AppGossipSender
+	CrossChainAppRequestSender
+}
+
 type Client struct {
 	handlerID     uint64
 	handlerPrefix []byte
 	router        *router
-	sender        common.AppSender
+	sender        clientSender
 	options       *clientOptions
 }
 
@@ -88,7 +93,7 @@ func (c *Client) AppRequest(
 
 		if err := c.sender.SendAppRequest(
 			ctx,
-			set.Of(nodeID),
+			nodeID,
 			requestID,
 			appRequestBytes,
 		); err != nil {

network/p2p/gossip/gossip.go

@@ -23,6 +23,7 @@ import (
 var (
 	_ Gossiper = (*ValidatorGossiper)(nil)
 	_ Gossiper = (*PullGossiper[testTx, *testTx])(nil)
+	_ Gossiper = (*NoOpGossiper)(nil)
 )
 
 // Gossiper gossips Gossipables to other nodes
@@ -196,3 +197,9 @@ func Every(ctx context.Context, log logging.Logger, gossiper Gossiper, frequency
 		}
 	}
 }
+
+type NoOpGossiper struct{}
+
+func (NoOpGossiper) Gossip(context.Context) error {
+	return nil
+}

network/p2p/gossip/gossip_test.go

@@ -15,7 +15,6 @@ import (
 
 	"github.com/ava-labs/avalanchego/ids"
 	"github.com/ava-labs/avalanchego/network/p2p"
-	"github.com/ava-labs/avalanchego/snow/engine/common"
 	"github.com/ava-labs/avalanchego/utils/logging"
 	"github.com/ava-labs/avalanchego/utils/set"
 )
@@ -115,8 +114,11 @@ func TestGossiperGossip(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			require := require.New(t)
+			ctx := context.Background()
 
-			responseSender := &common.SenderTest{}
+			responseSender := &p2p.FakeSender{
+				SentAppResponse: make(chan []byte, 1),
+			}
 			responseNetwork := p2p.NewNetwork(logging.NoLog{}, responseSender, prometheus.NewRegistry(), "")
 			responseBloom, err := NewBloomFilter(1000, 0.01)
 			require.NoError(err)
@@ -133,25 +135,13 @@ func TestGossiperGossip(t *testing.T) {
 			_, err = responseNetwork.NewAppProtocol(0x0, handler)
 			require.NoError(err)
 
-			requestSender := &common.SenderTest{
-				SendAppRequestF: func(ctx context.Context, nodeIDs set.Set[ids.NodeID], requestID uint32, request []byte) error {
-					go func() {
-						require.NoError(responseNetwork.AppRequest(ctx, ids.EmptyNodeID, requestID, time.Time{}, request))
-					}()
-					return nil
-				},
+			requestSender := &p2p.FakeSender{
+				SentAppRequest: make(chan []byte, 1),
 			}
 
 			requestNetwork := p2p.NewNetwork(logging.NoLog{}, requestSender, prometheus.NewRegistry(), "")
 			require.NoError(requestNetwork.Connected(context.Background(), ids.EmptyNodeID, nil))
 
-			gossiped := make(chan struct{})
-			responseSender.SendAppResponseF = func(ctx context.Context, nodeID ids.NodeID, requestID uint32, appResponseBytes []byte) error {
-				require.NoError(requestNetwork.AppResponse(ctx, nodeID, requestID, appResponseBytes))
-				close(gossiped)
-				return nil
-			}
-
 			bloom, err := NewBloomFilter(1000, 0.01)
 			require.NoError(err)
 			requestSet := testSet{
@@ -181,8 +171,9 @@ func TestGossiperGossip(t *testing.T) {
 				received.Add(tx)
 			}
 
-			require.NoError(gossiper.Gossip(context.Background()))
-			<-gossiped
+			require.NoError(gossiper.Gossip(ctx))
+			require.NoError(responseNetwork.AppRequest(ctx, ids.EmptyNodeID, 1, time.Time{}, <-requestSender.SentAppRequest))
+			require.NoError(requestNetwork.AppResponse(ctx, ids.EmptyNodeID, 1, <-responseSender.SentAppResponse))
 
 			require.Len(requestSet.set, tt.expectedLen)
 			require.Subset(tt.expectedPossibleValues, requestSet.set.List())

network/p2p/handler.go

@@ -12,7 +12,6 @@ import (
 
 	"github.com/ava-labs/avalanchego/ids"
 	"github.com/ava-labs/avalanchego/message"
-	"github.com/ava-labs/avalanchego/snow/engine/common"
 	"github.com/ava-labs/avalanchego/utils/logging"
 )
 
@@ -92,7 +91,7 @@ type responder struct {
 	Handler
 	handlerID uint64
 	log       logging.Logger
-	sender    common.AppSender
+	sender    routerSender
 }
 
 // AppRequest calls the underlying handler and sends back the response to nodeID

network/p2p/network.go

@@ -52,7 +52,7 @@ type clientOptions struct {
 // NewNetwork returns an instance of Network
 func NewNetwork(
 	log logging.Logger,
-	sender common.AppSender,
+	sender AppSender,
 	metrics prometheus.Registerer,
 	namespace string,
 ) *Network {
@@ -72,7 +72,7 @@ type Network struct {
 	Peers *Peers
 
 	log       logging.Logger
-	sender    common.AppSender
+	sender    AppSender
 	metrics   prometheus.Registerer
 	namespace string