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raft: add several test cases for testMaybeAppend

release-2.0
Xiang Li 2014-10-29 14:04:30 -07:00
parent ad1718a3e5
commit 14f4163e41
1 changed files with 49 additions and 29 deletions
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78
raft/log_test.go
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@ -161,6 +161,7 @@ func TestLogMaybeAppend(t *testing.T) {
previousEnts := []pb.Entry{{Term: 1}, {Term: 2}, {Term: 3}}
lastindex := uint64(3)
lastterm := uint64(3)
commit := uint64(1)
tests := []struct {
logTerm uint64
@ -171,86 +172,105 @@ func TestLogMaybeAppend(t *testing.T) {
wlasti uint64
wappend bool
wcommit uint64
wpanic bool
}{
// not match: term is different
{
lastterm - 1, lastindex, lastindex, []pb.Entry{{Term: 4}},
0, false, 0,
0, false, commit, false,
},
// not match: index out of bound
{
lastterm, lastindex + 1, lastindex, []pb.Entry{{Term: 4}},
0, false, 0,
0, false, commit, false,
},
// match with the last existing entry
{
lastterm, lastindex, lastindex, nil,
lastindex, true, lastindex,
lastindex, true, lastindex, false,
},
{
lastterm, lastindex, lastindex + 1, nil,
lastindex, true, lastindex, // do not increase commit higher than lastnewi
lastindex, true, lastindex, false, // do not increase commit higher than lastnewi
},
{
lastterm, lastindex, lastindex - 1, nil,
lastindex, true, lastindex - 1, // commit up to the commit in the message
lastindex, true, lastindex - 1, false, // commit up to the commit in the message
},
{
lastterm, lastindex, 0, nil,
lastindex, true, commit, false, // commit do not decrease
},
{
lastterm - 3, lastindex - 3, lastindex, nil,
1, true, commit, false, // commit do not decrease
},
{
lastterm, lastindex, lastindex, []pb.Entry{{Term: 4}},
lastindex + 1, true, lastindex,
lastindex + 1, true, lastindex, false,
},
{
lastterm, lastindex, lastindex + 1, []pb.Entry{{Term: 4}},
lastindex + 1, true, lastindex + 1,
lastindex + 1, true, lastindex + 1, false,
},
{
lastterm, lastindex, lastindex + 2, []pb.Entry{{Term: 4}},
lastindex + 1, true, lastindex + 1, // do not increase commit higher than lastnewi
lastindex + 1, true, lastindex + 1, false, // do not increase commit higher than lastnewi
},
{
lastterm, lastindex, lastindex + 2, []pb.Entry{{Term: 4}, {Term: 4}},
lastindex + 2, true, lastindex + 2,
lastindex + 2, true, lastindex + 2, false,
},
// match with the the entry in the middle
{
lastterm - 1, lastindex - 1, lastindex, []pb.Entry{{Term: 4}},
lastindex, true, lastindex,
lastindex, true, lastindex, false,
},
{
lastterm - 2, lastindex - 2, lastindex, []pb.Entry{{Term: 4}},
lastindex - 1, true, lastindex - 1,
lastindex - 1, true, lastindex - 1, false,
},
{
lastterm - 3, lastindex - 3, lastindex, []pb.Entry{{Term: 4}},
lastindex - 2, true, lastindex - 2,
lastindex - 2, true, lastindex - 2, true, // conflict with existing committed entry
},
{
lastterm - 2, lastindex - 2, lastindex, []pb.Entry{{Term: 4}, {Term: 4}},
lastindex, true, lastindex,
lastindex, true, lastindex, false,
},
}
for i, tt := range tests {
raftLog := newLog()
raftLog.append(raftLog.lastIndex(), previousEnts...)
glasti, gappend := raftLog.maybeAppend(tt.index, tt.logTerm, tt.committed, tt.ents...)
gcommit := raftLog.committed
raftLog.committed = commit
func() {
defer func() {
if r := recover(); r != nil {
if tt.wpanic != true {
t.Errorf("%d: panic = %v, want %v", i, true, tt.wpanic)
}
}
}()
glasti, gappend := raftLog.maybeAppend(tt.index, tt.logTerm, tt.committed, tt.ents...)
gcommit := raftLog.committed
if glasti != tt.wlasti {
t.Errorf("#%d: lastindex = %d, want %d", i, glasti, tt.wlasti)
}
if gappend != tt.wappend {
t.Errorf("#%d: append = %v, want %v", i, gappend, tt.wappend)
}
if gcommit != tt.wcommit {
t.Errorf("#%d: committed = %d, want %d", i, gcommit, tt.wcommit)
}
if gappend {
gents := raftLog.slice(raftLog.lastIndex()-uint64(len(tt.ents))+1, raftLog.lastIndex()+1)
if !reflect.DeepEqual(tt.ents, gents) {
t.Errorf("%d: appended entries = %v, want %v", i, gents, tt.ents)
if glasti != tt.wlasti {
t.Errorf("#%d: lastindex = %d, want %d", i, glasti, tt.wlasti)
}
}
if gappend != tt.wappend {
t.Errorf("#%d: append = %v, want %v", i, gappend, tt.wappend)
}
if gcommit != tt.wcommit {
t.Errorf("#%d: committed = %d, want %d", i, gcommit, tt.wcommit)
}
if gappend {
gents := raftLog.slice(raftLog.lastIndex()-uint64(len(tt.ents))+1, raftLog.lastIndex()+1)
if !reflect.DeepEqual(tt.ents, gents) {
t.Errorf("%d: appended entries = %v, want %v", i, gents, tt.ents)
}
}
}()
}
}