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leveldb_store_test.go
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package raft
import (
"bytes"
"io/ioutil"
"os"
"testing"
)
func LevelDBTestStore(t *testing.T) (string, *LevelDBStore) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
// New level
l, err := NewLevelDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
return dir, l
}
func TestLevelDB_StableStore(t *testing.T) {
var l interface{} = &LevelDBStore{}
_, ok := l.(StableStore)
if !ok {
t.Fatalf("LevelDBStore is not StableStore")
}
}
func TestLevelDB_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 := NewLevelDBStore(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 TestLevelDB_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 := NewLevelDBStore(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 TestLevelDB_LogStore(t *testing.T) {
var l interface{} = &LevelDBStore{}
_, ok := l.(LogStore)
if !ok {
t.Fatalf("LevelDBStore is not a LogStore")
}
}
func TestLevelDB_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 := NewLevelDBStore(dir)
if err != nil {
t.Fatalf("err: %v ", err)
}
defer l.Close()
// 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 Log
if err := l.GetLog(10, &out); err.Error() != "log not found" {
t.Fatalf("err: %v ", err)
}
// Write out a log
log := Log{
Index: 10,
Term: 3,
Type: LogCommand,
Data: []byte("test"),
}
if err := l.StoreLog(&log); err != nil {
t.Fatalf("err: %v", err)
}
// Try to fetch
if err := l.GetLog(10, &out); err != nil {
t.Fatalf("err: %v ", err)
}
// Check the highest index
idx, err = l.LastIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 10 {
t.Fatalf("bad idx: %d", idx)
}
// Delete the entire range
if err := l.DeleteRange(1, 10); err != nil {
t.Fatalf("err: %v ", err)
}
// Index should be zero again
idx, err = l.LastIndex()
if err != nil {
t.Fatalf("err: %v ", err)
}
if idx != 0 {
t.Fatalf("bad idx: %d", idx)
}
// Should not be able to fetch
if err := l.GetLog(10, &out); err.Error() != "log not found" {
t.Fatalf("err: %v ", err)
}
}