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mdb_store_test.go
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mdb_store_test.go
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package raftmdb
import (
"bytes"
"github.com/hashicorp/raft"
"io/ioutil"
"os"
"testing"
)
func MDBTestStore(t testing.TB) (string, *MDBStore) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
// New level
store, err := NewMDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
return dir, store
}
func TestMDB_StableStore(t *testing.T) {
var l interface{} = &MDBStore{}
_, ok := l.(raft.StableStore)
if !ok {
t.Fatalf("MDBStore is not StableStore")
}
}
func TestMDB_SetGet(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
// New level
l, err := NewMDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
defer l.Close()
// Get a bad key
key := []byte("foobar")
_, err = l.Get(key)
if err.Error() != "not found" {
t.Fatalf("err: %v ", err)
}
val := []byte("this is a test value")
if err := l.Set(key, val); err != nil {
t.Fatalf("err: %v ", err)
}
out, err := l.Get(key)
if err != nil {
t.Fatalf("err: %v ", err)
}
if bytes.Compare(val, out) != 0 {
t.Fatalf("did not get result back: %v %v", val, out)
}
}
func TestMDB_SetGetUint64(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
// New level
l, err := NewMDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
defer l.Close()
// Get a bad key
key := []byte("dolla bills")
_, err = l.GetUint64(key)
if err.Error() != "not found" {
t.Fatalf("err: %v ", err)
}
var val uint64 = 42000
if err := l.SetUint64(key, val); err != nil {
t.Fatalf("err: %v ", err)
}
out, err := l.GetUint64(key)
if err != nil {
t.Fatalf("err: %v ", err)
}
if out != val {
t.Fatalf("did not get result back: %v %v", val, out)
}
}
func TestMDB_LogStore(t *testing.T) {
var l interface{} = &MDBStore{}
_, ok := l.(raft.LogStore)
if !ok {
t.Fatalf("MDBStore is not a LogStore")
}
}
func TestMDB_Logs(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
// New level
l, err := NewMDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
defer l.Close()
// Should be no first index
idx, err := l.FirstIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 0 {
t.Fatalf("bad idx: %d", idx)
}
// Should be no last index
idx, err = l.LastIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 0 {
t.Fatalf("bad idx: %d", idx)
}
// Try a filed fetch
var out raft.Log
if err := l.GetLog(10, &out); err.Error() != "log not found" {
t.Fatalf("err: %v ", err)
}
// Write out a log
log := raft.Log{
Index: 1,
Term: 1,
Type: raft.LogCommand,
Data: []byte("first"),
}
for i := 1; i <= 10; i++ {
log.Index = uint64(i)
log.Term = uint64(i)
if err := l.StoreLog(&log); err != nil {
t.Fatalf("err: %v", err)
}
}
// Attempt to write multiple logs
var logs []*raft.Log
for i := 11; i <= 20; i++ {
nl := &raft.Log{
Index: uint64(i),
Term: uint64(i),
Type: raft.LogCommand,
Data: []byte("first"),
}
logs = append(logs, nl)
}
if err := l.StoreLogs(logs); err != nil {
t.Fatalf("err: %v", err)
}
// Try to fetch
if err := l.GetLog(10, &out); err != nil {
t.Fatalf("err: %v ", err)
}
// Try to fetch
if err := l.GetLog(20, &out); err != nil {
t.Fatalf("err: %v ", err)
}
// Check the lowest index
idx, err = l.FirstIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 1 {
t.Fatalf("bad idx: %d", idx)
}
// Check the highest index
idx, err = l.LastIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 20 {
t.Fatalf("bad idx: %d", idx)
}
// Delete a suffix
if err := l.DeleteRange(5, 20); err != nil {
t.Fatalf("err: %v ", err)
}
// Verify they are all deleted
for i := 5; i <= 20; i++ {
if err := l.GetLog(uint64(i), &out); err != raft.ErrLogNotFound {
t.Fatalf("err: %v ", err)
}
}
// Index should be one
idx, err = l.FirstIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 1 {
t.Fatalf("bad idx: %d", idx)
}
idx, err = l.LastIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 4 {
t.Fatalf("bad idx: %d", idx)
}
// Should not be able to fetch
if err := l.GetLog(5, &out); err.Error() != "log not found" {
t.Fatalf("err: %v ", err)
}
}