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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 core
import (
"testing"
"time"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
"github.com/stretchr/testify/suite"
)
type CompactionChainTestSuite struct {
suite.Suite
}
func (s *CompactionChainTestSuite) SetupTest() {
}
func (s *CompactionChainTestSuite) newCompactionChain() *compactionChain {
return newCompactionChain()
}
func (s *CompactionChainTestSuite) generateBlocks(
size int, cc *compactionChain) []*types.Block {
now := time.Now().UTC()
blocks := make([]*types.Block, size)
for idx := range blocks {
blocks[idx] = &types.Block{
Hash: common.NewRandomHash(),
Finalization: types.FinalizationResult{
Timestamp: now,
},
}
now = now.Add(100 * time.Millisecond)
}
for _, block := range blocks {
err := cc.processBlock(block)
s.Require().Nil(err)
}
return blocks
}
func (s *CompactionChainTestSuite) TestProcessBlock() {
cc := s.newCompactionChain()
now := time.Now().UTC()
blocks := make([]*types.Block, 10)
for idx := range blocks {
blocks[idx] = &types.Block{
Hash: common.NewRandomHash(),
Finalization: types.FinalizationResult{
Timestamp: now,
},
}
now = now.Add(100 * time.Millisecond)
}
var prevBlock *types.Block
for _, block := range blocks {
s.Equal(cc.prevBlock, prevBlock)
s.Require().NoError(cc.processBlock(block))
if prevBlock != nil {
s.Equal(prevBlock.Finalization.Height+1, block.Finalization.Height)
} else {
s.Equal(uint64(1), block.Finalization.Height)
}
prevBlock = block
}
}
func (s *CompactionChainTestSuite) TestExtractBlocks() {
cc := s.newCompactionChain()
blocks := make([]*types.Block, 10)
for idx := range blocks {
blocks[idx] = &types.Block{
Hash: common.NewRandomHash(),
Position: types.Position{
Round: 1,
},
}
s.Require().False(cc.blockRegistered(blocks[idx].Hash))
cc.registerBlock(blocks[idx])
s.Require().True(cc.blockRegistered(blocks[idx].Hash))
}
// Randomness is ready for extract.
for i := 0; i < 3; i++ {
s.Require().NoError(cc.processBlock(blocks[i]))
h := common.NewRandomHash()
s.Require().NoError(cc.processBlockRandomnessResult(
&types.BlockRandomnessResult{
BlockHash: blocks[i].Hash,
Randomness: h[:],
}))
}
delivered := cc.extractBlocks()
s.Require().Len(delivered, 3)
// Randomness is not yet ready for extract.
for i := 3; i < 6; i++ {
s.Require().NoError(cc.processBlock(blocks[i]))
}
delivered = append(delivered, cc.extractBlocks()...)
s.Require().Len(delivered, 3)
// Make some randomness ready.
for i := 3; i < 6; i++ {
h := common.NewRandomHash()
s.Require().NoError(cc.processBlockRandomnessResult(
&types.BlockRandomnessResult{
BlockHash: blocks[i].Hash,
Randomness: h[:],
}))
}
delivered = append(delivered, cc.extractBlocks()...)
s.Require().Len(delivered, 6)
// Later block's randomness is ready.
for i := 6; i < 10; i++ {
s.Require().NoError(cc.processBlock(blocks[i]))
if i < 8 {
continue
}
h := common.NewRandomHash()
s.Require().NoError(cc.processBlockRandomnessResult(
&types.BlockRandomnessResult{
BlockHash: blocks[i].Hash,
Randomness: h[:],
}))
}
delivered = append(delivered, cc.extractBlocks()...)
s.Require().Len(delivered, 6)
// Prior block's randomness is ready.
for i := 6; i < 8; i++ {
h := common.NewRandomHash()
s.Require().NoError(cc.processBlockRandomnessResult(
&types.BlockRandomnessResult{
BlockHash: blocks[i].Hash,
Randomness: h[:],
}))
}
delivered = append(delivered, cc.extractBlocks()...)
s.Require().Len(delivered, 10)
// The delivered order should be the same as processing order.
for i, block := range delivered {
s.Equal(block.Hash, blocks[i].Hash)
}
}
func (s *CompactionChainTestSuite) TestExtractBlocksRound0() {
cc := s.newCompactionChain()
blocks := make([]*types.Block, 10)
for idx := range blocks {
blocks[idx] = &types.Block{
Hash: common.NewRandomHash(),
Position: types.Position{
Round: 0,
},
}
s.Require().False(cc.blockRegistered(blocks[idx].Hash))
cc.registerBlock(blocks[idx])
s.Require().True(cc.blockRegistered(blocks[idx].Hash))
}
// Round 0 should be able to be extracted without randomness.
for i := 0; i < 3; i++ {
s.Require().NoError(cc.processBlock(blocks[i]))
}
delivered := cc.extractBlocks()
s.Require().Len(delivered, 3)
// Round 0 should be able to be extracted without randomness.
for i := 3; i < 10; i++ {
s.Require().NoError(cc.processBlock(blocks[i]))
}
delivered = append(delivered, cc.extractBlocks()...)
s.Require().Len(delivered, 10)
// The delivered order should be the same as processing order.
for i, block := range delivered {
s.Equal(block.Hash, blocks[i].Hash)
}
}
func TestCompactionChain(t *testing.T) {
suite.Run(t, new(CompactionChainTestSuite))
}
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