path: root/core/blockdb/level-db_test.go

// 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))
}