Shutdown raft nodes from the last one to the first one in echovault tests. This is to ensure the leader node is shutdown last.

echovault/echovault.go

@@ -396,7 +396,7 @@ func (server *EchoVault) startTCP() {
 			conn, err := listener.Accept()
 			if err != nil {
 				log.Printf("listener error: %v\n", err)
-				continue
+				return
 			}
 			// Read loop for connection
 			go server.handleConnection(conn)

echovault/echovault_test.go

@@ -221,12 +221,12 @@ func Test_Cluster(t *testing.T) {
 		return
 	}
 
-	defer func() {
-		for _, node := range nodes {
-			_ = node.raw.Close()
-			node.server.ShutDown()
+	t.Cleanup(func() {
+		for i := len(nodes) - 1; i > -1; i-- {
+			_ = nodes[i].raw.Close()
+			nodes[i].server.ShutDown()
 		}
-	}()
+	})
 
 	// Prepare the write data for the cluster.
 	tests := map[string][]struct {