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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus 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 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 library. If not, see
// <http://www.gnu.org/licenses/>.
package db
import (
"os"
"testing"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/types"
"github.com/stretchr/testify/suite"
)
type MemBackedDBTestSuite struct {
suite.Suite
v0 types.NodeID
b00, b01, b02 *types.Block
}
func (s *MemBackedDBTestSuite) SetupSuite() {
s.v0 = types.NodeID{Hash: common.NewRandomHash()}
genesisHash := common.NewRandomHash()
s.b00 = &types.Block{
ProposerID: s.v0,
ParentHash: genesisHash,
Hash: genesisHash,
Position: types.Position{
Height: 0,
},
Acks: common.NewSortedHashes(common.Hashes{}),
}
s.b01 = &types.Block{
ProposerID: s.v0,
ParentHash: s.b00.Hash,
Hash: common.NewRandomHash(),
Position: types.Position{
Height: 1,
},
Acks: common.NewSortedHashes(common.Hashes{s.b00.Hash}),
}
s.b02 = &types.Block{
ProposerID: s.v0,
ParentHash: s.b01.Hash,
Hash: common.NewRandomHash(),
Position: types.Position{
Height: 2,
},
Acks: common.NewSortedHashes(common.Hashes{s.b01.Hash}),
}
}
func (s *MemBackedDBTestSuite) TestSaveAndLoad() {
// Make sure we are able to save/load from file.
dbPath := "test-save-and-load.db"
// Make sure the file pointed by 'dbPath' doesn't exist.
_, err := os.Stat(dbPath)
s.Require().Error(err)
dbInst, err := NewMemBackedDB(dbPath)
s.Require().NoError(err)
s.Require().NotNil(dbInst)
defer func() {
if dbInst != nil {
s.NoError(os.Remove(dbPath))
dbInst = nil
}
}()
s.NoError(dbInst.PutBlock(*s.b00))
s.NoError(dbInst.PutBlock(*s.b01))
s.NoError(dbInst.PutBlock(*s.b02))
s.NoError(dbInst.Close())
// Load the json file back to check if all inserted blocks
// exists.
dbInst, err = NewMemBackedDB(dbPath)
s.Require().NoError(err)
s.Require().NotNil(dbInst)
s.True(dbInst.HasBlock(s.b00.Hash))
s.True(dbInst.HasBlock(s.b01.Hash))
s.True(dbInst.HasBlock(s.b02.Hash))
s.NoError(dbInst.Close())
}
func (s *MemBackedDBTestSuite) TestIteration() {
// Make sure the file pointed by 'dbPath' doesn't exist.
dbInst, err := NewMemBackedDB()
s.Require().NoError(err)
s.Require().NotNil(dbInst)
// Setup database.
s.NoError(dbInst.PutBlock(*s.b00))
s.NoError(dbInst.PutBlock(*s.b01))
s.NoError(dbInst.PutBlock(*s.b02))
// Check if we can iterate all 3 blocks.
iter, err := dbInst.GetAllBlocks()
s.Require().NoError(err)
touched := common.Hashes{}
for {
b, err := iter.NextBlock()
if err == ErrIterationFinished {
break
}
s.Require().NoError(err)
touched = append(touched, b.Hash)
}
s.Len(touched, 3)
s.Contains(touched, s.b00.Hash)
s.Contains(touched, s.b01.Hash)
s.Contains(touched, s.b02.Hash)
}
func (s *MemBackedDBTestSuite) TestCompactionChainTipInfo() {
dbInst, err := NewMemBackedDB()
s.Require().NoError(err)
s.Require().NotNil(dbInst)
// Save some tip info.
hash := common.NewRandomHash()
s.Require().NoError(dbInst.PutCompactionChainTipInfo(hash, 123))
// Get it back to check.
hashBack, height := dbInst.GetCompactionChainTipInfo()
s.Require().Equal(hash, hashBack)
s.Require().Equal(height, uint64(123))
// Unable to put compaction chain tip info with lower height.
err = dbInst.PutCompactionChainTipInfo(hash, 122)
s.Require().IsType(err, ErrInvalidCompactionChainTipHeight)
}
func TestMemBackedDB(t *testing.T) {
suite.Run(t, new(MemBackedDBTestSuite))
}
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