satisfy race detector

gossipsub_test.go

@@ -1584,13 +1584,22 @@ func TestGossipsubMultipleGraftTopics(t *testing.T) {
 	firstPeer := hosts[0].ID()
 	secondPeer := hosts[1].ID()
 
+	p2Sub := psubs[1]
 	p1Router := psubs[0].rt.(*GossipSubRouter)
 	p2Router := psubs[1].rt.(*GossipSubRouter)
+
+	finChan := make(chan struct{})
+
+	p2Sub.eval <- func() {
 		// Add topics to second peer
 		p2Router.mesh[firstTopic] = map[peer.ID]struct{}{}
 		p2Router.mesh[secondTopic] = map[peer.ID]struct{}{}
 		p2Router.mesh[thirdTopic] = map[peer.ID]struct{}{}
 
+		finChan <- struct{}{}
+	}
+	<-finChan
+
 	// Send multiple GRAFT messages to second peer from
 	// 1st peer
 	p1Router.sendGraftPrune(map[peer.ID][]string{
@@ -1599,6 +1608,7 @@ func TestGossipsubMultipleGraftTopics(t *testing.T) {
 
 	time.Sleep(time.Second * 1)
 
+	p2Sub.eval <- func() {
 		if _, ok := p2Router.mesh[firstTopic][firstPeer]; !ok {
 			t.Errorf("First peer wasnt added to mesh of the second peer for the topic %s", firstTopic)
 		}
@@ -1608,6 +1618,9 @@ func TestGossipsubMultipleGraftTopics(t *testing.T) {
 		if _, ok := p2Router.mesh[thirdTopic][firstPeer]; !ok {
 			t.Errorf("First peer wasnt added to mesh of the second peer for the topic %s", thirdTopic)
 		}
+		finChan <- struct{}{}
+	}
+	<-finChan
 }
 
 func TestGossipsubOpportunisticGrafting(t *testing.T) {