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// Copyright 2018 The dexon-consensus-core Authors
// This file is part of the dexon-consensus-core library.
//
// The dexon-consensus-core library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus-core library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus-core library. If not, see
// <http://www.gnu.org/licenses/>.
package blockdb
import (
"fmt"
"testing"
"time"
"os"
"github.com/stretchr/testify/suite"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
)
type LevelDBTestSuite struct {
suite.Suite
}
func (s *LevelDBTestSuite) TestBasicUsage() {
dbName := fmt.Sprintf("test-db-%v.db", time.Now().UTC())
db, err := NewLevelDBBackedBlockDB(dbName)
s.Require().Nil(err)
defer func(dbName string) {
err = db.Close()
s.Nil(err)
err = os.RemoveAll(dbName)
s.Nil(err)
}(dbName)
// Queried something from an empty database.
hash1 := common.NewRandomHash()
_, err = db.Get(hash1)
s.Equal(ErrBlockDoesNotExist, err)
// Update on an empty database should not success.
node1 := types.NodeID{Hash: common.NewRandomHash()}
block1 := types.Block{
ProposerID: node1,
Hash: hash1,
Position: types.Position{
Height: 1,
},
}
err = db.Update(block1)
s.Equal(ErrBlockDoesNotExist, err)
// Put to create a new record should just work fine.
err = db.Put(block1)
s.Nil(err)
// Get it back should work fine.
queried, err := db.Get(block1.Hash)
s.Nil(err)
s.Equal(queried.ProposerID, block1.ProposerID)
// Test Update.
now := time.Now().UTC()
queried.Timestamp = now
err = db.Update(queried)
s.Nil(err)
// Try to get it back via NodeID and height.
queried, err = db.Get(block1.Hash)
s.Nil(err)
s.Equal(now, queried.Timestamp)
}
func (s *LevelDBTestSuite) TestSyncIndex() {
dbName := fmt.Sprintf("test-db-%v-si.db", time.Now().UTC())
db, err := NewLevelDBBackedBlockDB(dbName)
s.Require().Nil(err)
defer func(dbName string) {
err = db.Close()
s.Nil(err)
err = os.RemoveAll(dbName)
s.Nil(err)
}(dbName)
// Create some blocks.
blocks := [10]types.Block{}
for i := range blocks {
block := types.Block{
ProposerID: types.NodeID{Hash: common.NewRandomHash()},
Hash: common.NewRandomHash(),
Position: types.Position{
Height: uint64(i),
},
}
db.Put(block)
blocks[i] = block
}
// Save blocks to db.
err = db.Close()
s.Nil(err)
// Load back blocks(syncIndex is called).
db, err = NewLevelDBBackedBlockDB(dbName)
s.Require().Nil(err)
// Verify result.
for _, block := range blocks {
queried, err := db.Get(block.Hash)
s.Nil(err)
s.Equal(block.ProposerID, queried.ProposerID)
s.Equal(block.Position.Height, queried.Position.Height)
}
}
func TestLevelDB(t *testing.T) {
suite.Run(t, new(LevelDBTestSuite))
}
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