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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 vm
import (
"bytes"
"math/big"
"math/rand"
"testing"
"time"
"github.com/dexon-foundation/dexon/common"
"github.com/dexon-foundation/dexon/core/state"
"github.com/dexon-foundation/dexon/ethdb"
"github.com/stretchr/testify/suite"
)
func init() {
rand.Seed(time.Now().UnixNano())
}
func randomBytes(minLength, maxLength int32) []byte {
length := rand.Int31()%(maxLength-minLength) + minLength
b := make([]byte, length)
for i := range b {
b[i] = byte(65 + rand.Int31()%60)
}
return b
}
type GovernanceStateHelperTestSuite struct {
suite.Suite
s *GovernanceStateHelper
}
func (g *GovernanceStateHelperTestSuite) SetupTest() {
db := state.NewDatabase(ethdb.NewMemDatabase())
statedb, err := state.New(common.Hash{}, db)
if err != nil {
panic(err)
}
g.s = &GovernanceStateHelper{statedb}
}
func (g *GovernanceStateHelperTestSuite) TestReadWriteBytes() {
for i := 0; i < 100; i++ {
// Short bytes.
loc := big.NewInt(rand.Int63())
data := randomBytes(3, 32)
g.s.writeBytes(loc, data)
read := g.s.readBytes(loc)
g.Require().Equal(0, bytes.Compare(data, read))
// long bytes.
loc = big.NewInt(rand.Int63())
data = randomBytes(33, 2560)
g.s.writeBytes(loc, data)
read = g.s.readBytes(loc)
g.Require().Equal(0, bytes.Compare(data, read))
}
}
func TestGovernanceStateHelper(t *testing.T) {
suite.Run(t, new(GovernanceStateHelperTestSuite))
}
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