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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{}
totalOrderingDelivered map[common.Hash]struct{}
blockDelivered map[common.Hash]struct{}
}
func newSlowApp(sleep time.Duration) *slowApp {
return &slowApp{
sleep: sleep,
blockConfirmed: make(map[common.Hash]struct{}),
stronglyAcked: make(map[common.Hash]struct{}),
totalOrderingDelivered: make(map[common.Hash]struct{}),
blockDelivered: make(map[common.Hash]struct{}),
}
}
func (app *slowApp) PreparePayload(_ types.Position) []byte {
return []byte{}
}
func (app *slowApp) PrepareWitness(_ uint64) types.Witness {
return types.Witness{}
}
func (app *slowApp) VerifyBlock(_ *types.Block) 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) TotalOrderingDelivered(blockHashes common.Hashes, early bool) {
time.Sleep(app.sleep)
for _, hash := range blockHashes {
app.totalOrderingDelivered[hash] = struct{}{}
}
}
func (app *slowApp) BlockDelivered(
blockHash common.Hash, _ types.FinalizationResult) {
time.Sleep(app.sleep)
app.blockDelivered[blockHash] = struct{}{}
}
type NonBlockingTestSuite struct {
suite.Suite
}
func (s *NonBlockingTestSuite) TestNonBlocking() {
sleep := 50 * time.Millisecond
app := newSlowApp(sleep)
nbModule := newNonBlocking(app, 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 {
nbModule.BlockConfirmed(types.Block{
Hash: hash,
Witness: types.Witness{Timestamp: time.Now().UTC()},
})
nbModule.StronglyAcked(hash)
nbModule.BlockDelivered(hash, types.FinalizationResult{})
}
nbModule.TotalOrderingDelivered(hashes, true)
// nonBlocking should be non-blocking.
s.True(shouldFinish.After(time.Now().UTC()))
nbModule.wait()
for _, hash := range hashes {
s.Contains(app.blockConfirmed, hash)
s.Contains(app.stronglyAcked, hash)
s.Contains(app.totalOrderingDelivered, hash)
s.Contains(app.blockDelivered, hash)
}
}
func TestNonBlocking(t *testing.T) {
suite.Run(t, new(NonBlockingTestSuite))
}
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