/
storage_test.go
285 lines (253 loc) · 7.75 KB
/
storage_test.go
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// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package raft
import (
"math"
"reflect"
"testing"
pb "github.com/coreos/etcd/raft/raftpb"
)
func TestStorageTerm(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
tests := []struct {
i uint64
werr error
wterm uint64
wpanic bool
}{
{2, ErrCompacted, 0, false},
{3, nil, 3, false},
{4, nil, 4, false},
{5, nil, 5, false},
{6, ErrUnavailable, 0, false},
}
for i, tt := range tests {
s := &MemoryStorage{ents: ents}
func() {
defer func() {
if r := recover(); r != nil {
if !tt.wpanic {
t.Errorf("%d: panic = %v, want %v", i, true, tt.wpanic)
}
}
}()
term, err := s.Term(tt.i)
if err != tt.werr {
t.Errorf("#%d: err = %v, want %v", i, err, tt.werr)
}
if term != tt.wterm {
t.Errorf("#%d: term = %d, want %d", i, term, tt.wterm)
}
}()
}
}
func TestStorageEntries(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 6}}
tests := []struct {
lo, hi, maxsize uint64
werr error
wentries []pb.Entry
}{
{2, 6, math.MaxUint64, ErrCompacted, nil},
{3, 4, math.MaxUint64, ErrCompacted, nil},
{4, 5, math.MaxUint64, nil, []pb.Entry{{Index: 4, Term: 4}}},
{4, 6, math.MaxUint64, nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}}},
{4, 7, math.MaxUint64, nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 6}}},
// even if maxsize is zero, the first entry should be returned
{4, 7, 0, nil, []pb.Entry{{Index: 4, Term: 4}}},
// limit to 2
{4, 7, uint64(ents[1].Size() + ents[2].Size()), nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}}},
// limit to 2
{4, 7, uint64(ents[1].Size() + ents[2].Size() + ents[3].Size()/2), nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}}},
{4, 7, uint64(ents[1].Size() + ents[2].Size() + ents[3].Size() - 1), nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}}},
// all
{4, 7, uint64(ents[1].Size() + ents[2].Size() + ents[3].Size()), nil, []pb.Entry{{Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 6}}},
}
for i, tt := range tests {
s := &MemoryStorage{ents: ents}
entries, err := s.Entries(tt.lo, tt.hi, tt.maxsize)
if err != tt.werr {
t.Errorf("#%d: err = %v, want %v", i, err, tt.werr)
}
if !reflect.DeepEqual(entries, tt.wentries) {
t.Errorf("#%d: entries = %v, want %v", i, entries, tt.wentries)
}
}
}
func TestStorageLastIndex(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
s := &MemoryStorage{ents: ents}
last, err := s.LastIndex()
if err != nil {
t.Errorf("err = %v, want nil", err)
}
if last != 5 {
t.Errorf("term = %d, want %d", last, 5)
}
s.Append([]pb.Entry{{Index: 6, Term: 5}})
last, err = s.LastIndex()
if err != nil {
t.Errorf("err = %v, want nil", err)
}
if last != 6 {
t.Errorf("last = %d, want %d", last, 5)
}
}
func TestStorageFirstIndex(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
s := &MemoryStorage{ents: ents}
first, err := s.FirstIndex()
if err != nil {
t.Errorf("err = %v, want nil", err)
}
if first != 4 {
t.Errorf("first = %d, want %d", first, 4)
}
s.Compact(4)
first, err = s.FirstIndex()
if err != nil {
t.Errorf("err = %v, want nil", err)
}
if first != 5 {
t.Errorf("first = %d, want %d", first, 5)
}
}
func TestStorageCompact(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
tests := []struct {
i uint64
werr error
windex uint64
wterm uint64
wlen int
}{
{2, ErrCompacted, 3, 3, 3},
{3, ErrCompacted, 3, 3, 3},
{4, nil, 4, 4, 2},
{5, nil, 5, 5, 1},
}
for i, tt := range tests {
s := &MemoryStorage{ents: ents}
err := s.Compact(tt.i)
if err != tt.werr {
t.Errorf("#%d: err = %v, want %v", i, err, tt.werr)
}
if s.ents[0].Index != tt.windex {
t.Errorf("#%d: index = %d, want %d", i, s.ents[0].Index, tt.windex)
}
if s.ents[0].Term != tt.wterm {
t.Errorf("#%d: term = %d, want %d", i, s.ents[0].Term, tt.wterm)
}
if len(s.ents) != tt.wlen {
t.Errorf("#%d: len = %d, want %d", i, len(s.ents), tt.wlen)
}
}
}
func TestStorageCreateSnapshot(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
cs := &pb.ConfState{Nodes: []uint64{1, 2, 3}}
data := []byte("data")
tests := []struct {
i uint64
werr error
wsnap pb.Snapshot
}{
{4, nil, pb.Snapshot{Data: data, Metadata: pb.SnapshotMetadata{Index: 4, Term: 4, ConfState: *cs}}},
{5, nil, pb.Snapshot{Data: data, Metadata: pb.SnapshotMetadata{Index: 5, Term: 5, ConfState: *cs}}},
}
for i, tt := range tests {
s := &MemoryStorage{ents: ents}
snap, err := s.CreateSnapshot(tt.i, cs, data)
if err != tt.werr {
t.Errorf("#%d: err = %v, want %v", i, err, tt.werr)
}
if !reflect.DeepEqual(snap, tt.wsnap) {
t.Errorf("#%d: snap = %+v, want %+v", i, snap, tt.wsnap)
}
}
}
func TestStorageAppend(t *testing.T) {
ents := []pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}}
tests := []struct {
entries []pb.Entry
werr error
wentries []pb.Entry
}{
{
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}},
},
{
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 6}, {Index: 5, Term: 6}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 6}, {Index: 5, Term: 6}},
},
{
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 5}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 5}},
},
// truncate incoming entries, truncate the existing entries and append
{
[]pb.Entry{{Index: 2, Term: 3}, {Index: 3, Term: 3}, {Index: 4, Term: 5}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 5}},
},
// truncate the existing entries and append
{
[]pb.Entry{{Index: 4, Term: 5}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 5}},
},
// direct append
{
[]pb.Entry{{Index: 6, Term: 5}},
nil,
[]pb.Entry{{Index: 3, Term: 3}, {Index: 4, Term: 4}, {Index: 5, Term: 5}, {Index: 6, Term: 5}},
},
}
for i, tt := range tests {
s := &MemoryStorage{ents: ents}
err := s.Append(tt.entries)
if err != tt.werr {
t.Errorf("#%d: err = %v, want %v", i, err, tt.werr)
}
if !reflect.DeepEqual(s.ents, tt.wentries) {
t.Errorf("#%d: entries = %v, want %v", i, s.ents, tt.wentries)
}
}
}
func TestStorageApplySnapshot(t *testing.T) {
cs := &pb.ConfState{Nodes: []uint64{1, 2, 3}}
data := []byte("data")
tests := []pb.Snapshot{{Data: data, Metadata: pb.SnapshotMetadata{Index: 4, Term: 4, ConfState: *cs}},
{Data: data, Metadata: pb.SnapshotMetadata{Index: 3, Term: 3, ConfState: *cs}},
}
s := NewMemoryStorage()
//Apply Snapshot successful
i := 0
tt := tests[i]
err := s.ApplySnapshot(tt)
if err != nil {
t.Errorf("#%d: err = %v, want %v", i, err, nil)
}
//Apply Snapshot fails due to ErrSnapOutOfDate
i = 1
tt = tests[i]
err = s.ApplySnapshot(tt)
if err != ErrSnapOutOfDate {
t.Errorf("#%d: err = %v, want %v", i, err, ErrSnapOutOfDate)
}
}