raft: add comment string for TestNodeStart

raft/node.go

@@ -143,7 +143,7 @@ type Peer struct {
 
 // StartNode returns a new Node given a unique raft id, a list of raft peers, and
 // the election and heartbeat timeouts in units of ticks.
-// It also builds ConfChangeAddNode entry for each peer and puts them at the head of the log.
+// It appends a ConfChangeAddNode entry for each given peer to the initial log.
 func StartNode(id uint64, peers []Peer, election, heartbeat int) Node {
 	n := newNode()
 	r := newRaft(id, nil, election, heartbeat)

raft/node_test.go

@@ -161,7 +161,10 @@ func TestReadyContainUpdates(t *testing.T) {
 	}
 }
 
-func TestNode(t *testing.T) {
+// TestNodeStart ensures that a node can be started correctly. The node should
+// start with correct configuration change entries, and can accept and commit
+// proposals.
+func TestNodeStart(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()