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Merge pull request #6384 from hhkbp2/add-test-case-for-leader-transfer-from-follower

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raft: add test case for leader transfer from follower
This commit is contained in:
Xiang Li 2016-09-08 13:58:03 -05:00 committed by GitHub
commit e9f841627c
1 changed files with 29 additions and 1 deletions
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30
raft/raft_test.go
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@ -2196,7 +2196,7 @@ func TestCommitAfterRemoveNode(t *testing.T) {
}
// TestLeaderTransferToUpToDateNode verifies transferring should succeed
// if the transferee has the most up-to-date log entires when transfer starts.
// if the transferee has the most up-to-date log entries when transfer starts.
func TestLeaderTransferToUpToDateNode(t *testing.T) {
nt := newNetwork(nil, nil, nil)
nt.send(pb.Message{From: 1, To: 1, Type: pb.MsgHup})
@ -2220,6 +2220,34 @@ func TestLeaderTransferToUpToDateNode(t *testing.T) {
checkLeaderTransferState(t, lead, StateLeader, 1)
}
// TestLeaderTransferToUpToDateNodeFromFollower verifies transferring should succeed
// if the transferee has the most up-to-date log entries when transfer starts.
// Not like TestLeaderTransferToUpToDateNode, where the leader transfer message
// is sent to the leader, in this test case every leader transfer message is sent
// to the follower.
func TestLeaderTransferToUpToDateNodeFromFollower(t *testing.T) {
nt := newNetwork(nil, nil, nil)
nt.send(pb.Message{From: 1, To: 1, Type: pb.MsgHup})
lead := nt.peers[1].(*raft)
if lead.lead != 1 {
t.Fatalf("after election leader is %x, want 1", lead.lead)
}
// Transfer leadership to 2.
nt.send(pb.Message{From: 2, To: 2, Type: pb.MsgTransferLeader})
checkLeaderTransferState(t, lead, StateFollower, 2)
// After some log replication, transfer leadership back to 1.
nt.send(pb.Message{From: 1, To: 1, Type: pb.MsgProp, Entries: []pb.Entry{{}}})
nt.send(pb.Message{From: 1, To: 1, Type: pb.MsgTransferLeader})
checkLeaderTransferState(t, lead, StateLeader, 1)
}
// TestLeaderTransferWithCheckQuorum ensures transferring leader still works
// even the current leader is still under its leader lease
func TestLeaderTransferWithCheckQuorum(t *testing.T) {