fix test fixtures

internal/blockchain/v0/reactor_test.go

@@ -63,7 +63,7 @@ func setup(
 		fastSync:           true,
 	}
 
-	chDesc := p2p.ChannelDescriptor{ID: byte(BlockchainChannel)}
+	chDesc := p2p.ChannelDescriptor{ID: byte(BlockchainChannel), RecvBufferCapacity: 16}
 	rts.blockchainChannels = rts.network.MakeChannelsNoCleanup(t, chDesc, new(bcproto.Message), int(chBuf))
 
 	i := 0

internal/p2p/p2p_test.go

@@ -18,6 +18,7 @@ var (
 		Priority:            5,
 		SendQueueCapacity:   10,
 		RecvMessageCapacity: 10,
+		RecvBufferCapacity:  8,
 		MaxSendBytes:        1000,
 	}