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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/stretchr/testify/suite"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
)
type slowApp struct {
sleep time.Duration
blockConfirmed map[common.Hash]struct{}
stronglyAcked map[common.Hash]struct{}
totalOrderingDeliver map[common.Hash]struct{}
deliverBlock map[common.Hash]struct{}
witnessAck map[common.Hash]struct{}
witnessResultChan chan types.WitnessResult
}
func newSlowApp(sleep time.Duration) *slowApp {
return &slowApp{
sleep: sleep,
blockConfirmed: make(map[common.Hash]struct{}),
stronglyAcked: make(map[common.Hash]struct{}),
totalOrderingDeliver: make(map[common.Hash]struct{}),
deliverBlock: make(map[common.Hash]struct{}),
witnessAck: make(map[common.Hash]struct{}),
witnessResultChan: make(chan types.WitnessResult),
}
}
func (app *slowApp) PreparePayload(_ types.Position) []byte {
return []byte{}
}
func (app *slowApp) VerifyPayloads(_ []byte) bool {
return true
}
func (app *slowApp) BlockConfirmed(block *types.Block) {
time.Sleep(app.sleep)
app.blockConfirmed[block.Hash] = struct{}{}
}
func (app *slowApp) StronglyAcked(blockHash common.Hash) {
time.Sleep(app.sleep)
app.stronglyAcked[blockHash] = struct{}{}
}
func (app *slowApp) TotalOrderingDeliver(blockHashes common.Hashes, early bool) {
time.Sleep(app.sleep)
for _, hash := range blockHashes {
app.totalOrderingDeliver[hash] = struct{}{}
}
}
func (app *slowApp) DeliverBlock(blockHash common.Hash, timestamp time.Time) {
time.Sleep(app.sleep)
app.deliverBlock[blockHash] = struct{}{}
}
func (app *slowApp) BlockProcessedChan() <-chan types.WitnessResult {
return app.witnessResultChan
}
func (app *slowApp) WitnessAckDeliver(witnessAck *types.WitnessAck) {
time.Sleep(app.sleep)
app.witnessAck[witnessAck.Hash] = struct{}{}
}
type NonBlockingAppTestSuite struct {
suite.Suite
}
func (s *NonBlockingAppTestSuite) TestNonBlockingApplication() {
sleep := 50 * time.Millisecond
app := newSlowApp(sleep)
nbapp := newNonBlockingApplication(app)
hashes := make(common.Hashes, 10)
for idx := range hashes {
hashes[idx] = common.NewRandomHash()
}
now := time.Now().UTC()
shouldFinish := now.Add(100 * time.Millisecond)
// Start doing some 'heavy' job.
for _, hash := range hashes {
nbapp.BlockConfirmed(&types.Block{Hash: hash})
nbapp.StronglyAcked(hash)
nbapp.DeliverBlock(hash, time.Now().UTC())
nbapp.WitnessAckDeliver(&types.WitnessAck{Hash: hash})
}
nbapp.TotalOrderingDeliver(hashes, true)
// nonBlockingApplication should be non-blocking.
s.True(shouldFinish.After(time.Now().UTC()))
nbapp.wait()
for _, hash := range hashes {
s.Contains(app.blockConfirmed, hash)
s.Contains(app.stronglyAcked, hash)
s.Contains(app.totalOrderingDeliver, hash)
s.Contains(app.deliverBlock, hash)
s.Contains(app.witnessAck, hash)
}
}
func TestNonBlockingApplication(t *testing.T) {
suite.Run(t, new(NonBlockingAppTestSuite))
}
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