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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 (
"os"
"testing"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
"github.com/stretchr/testify/suite"
)
type MemBackedBlockDBTestSuite struct {
suite.Suite
v0 types.ValidatorID
b00, b01, b02 *types.Block
}
func (s *MemBackedBlockDBTestSuite) SetupSuite() {
s.v0 = types.ValidatorID{Hash: common.NewRandomHash()}
genesisHash := common.NewRandomHash()
s.b00 = &types.Block{
ProposerID: s.v0,
ParentHash: genesisHash,
Hash: genesisHash,
Position: types.Position{
Height: 0,
},
Acks: make(map[common.Hash]struct{}),
}
s.b01 = &types.Block{
ProposerID: s.v0,
ParentHash: s.b00.Hash,
Hash: common.NewRandomHash(),
Position: types.Position{
Height: 1,
},
Acks: map[common.Hash]struct{}{
s.b00.Hash: struct{}{},
},
}
s.b02 = &types.Block{
ProposerID: s.v0,
ParentHash: s.b01.Hash,
Hash: common.NewRandomHash(),
Position: types.Position{
Height: 2,
},
Acks: map[common.Hash]struct{}{
s.b01.Hash: struct{}{},
},
}
}
func (s *MemBackedBlockDBTestSuite) 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().NotNil(err)
db, err := NewMemBackedBlockDB(dbPath)
s.Require().Nil(err)
s.Require().NotNil(db)
defer func() {
if db != nil {
s.Nil(os.Remove(dbPath))
db = nil
}
}()
s.Nil(db.Put(*s.b00))
s.Nil(db.Put(*s.b01))
s.Nil(db.Put(*s.b02))
s.Nil(db.Close())
// Load the json file back to check if all inserted blocks
// exists.
db, err = NewMemBackedBlockDB(dbPath)
s.Require().Nil(err)
s.Require().NotNil(db)
s.True(db.Has(s.b00.Hash))
s.True(db.Has(s.b01.Hash))
s.True(db.Has(s.b02.Hash))
s.Nil(db.Close())
}
func (s *MemBackedBlockDBTestSuite) TestIteration() {
// Make sure the file pointed by 'dbPath' doesn't exist.
db, err := NewMemBackedBlockDB()
s.Require().Nil(err)
s.Require().NotNil(db)
// Setup database.
s.Nil(db.Put(*s.b00))
s.Nil(db.Put(*s.b01))
s.Nil(db.Put(*s.b02))
// Check if we can iterate all 3 blocks.
iter, err := db.GetAll()
s.Require().Nil(err)
touched := map[common.Hash]struct{}{}
for {
b, err := iter.Next()
if err == ErrIterationFinished {
break
}
s.Require().Nil(err)
touched[b.Hash] = struct{}{}
}
s.Len(touched, 3)
s.Contains(touched, s.b00.Hash)
s.Contains(touched, s.b01.Hash)
s.Contains(touched, s.b02.Hash)
}
func TestMemBackedBlockDB(t *testing.T) {
suite.Run(t, new(MemBackedBlockDBTestSuite))
}
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