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// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus 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 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 library. If not, see
// <http://www.gnu.org/licenses/>.
package integration
import (
"testing"
"time"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core"
"github.com/dexon-foundation/dexon-consensus/core/test"
"github.com/stretchr/testify/suite"
)
type WithSchedulerTestSuite struct {
suite.Suite
}
func (s *WithSchedulerTestSuite) TestNonByzantine() {
var (
networkLatency = &test.NormalLatencyModel{
Sigma: 20,
Mean: 250,
}
proposingLatency = &test.NormalLatencyModel{
Sigma: 30,
Mean: 500,
}
numNodes = 25
req = s.Require()
)
if testing.Short() {
numNodes = 7
}
// Setup key pairs.
prvKeys, pubKeys, err := test.NewKeys(numNodes)
req.NoError(err)
// Setup governance.
gov, err := test.NewGovernance(
test.NewState(
pubKeys, 250*time.Millisecond, &common.NullLogger{}, true),
core.ConfigRoundShift)
req.NoError(err)
// Setup nodes.
nodes, err := PrepareNodes(
gov, prvKeys, 25, networkLatency, proposingLatency)
req.NoError(err)
// Setup scheduler.
apps, dbs := CollectAppAndDBFromNodes(nodes)
now := time.Now().UTC()
sch := test.NewScheduler(test.NewStopByConfirmedBlocks(50, apps, dbs))
for _, n := range nodes {
req.NoError(n.Bootstrap(sch, now))
}
sch.Run(4)
// Check results by comparing test.App instances.
req.NoError(VerifyApps(apps))
}
func (s *WithSchedulerTestSuite) TestConfigurationChange() {
// This test case verify the correctness of core.Lattice when configuration
// changes.
// - Configuration changes are registered at 'pickedNode', and would carried
// in blocks' payload and broadcast to other nodes.
var (
networkLatency = &test.NormalLatencyModel{
Sigma: 20,
Mean: 250,
}
proposingLatency = &test.NormalLatencyModel{
Sigma: 30,
Mean: 500,
}
numNodes = 4
req = s.Require()
maxNumChains = uint32(9)
)
// Setup key pairs.
prvKeys, pubKeys, err := test.NewKeys(numNodes)
req.NoError(err)
// Setup governance.
gov, err := test.NewGovernance(
test.NewState(
pubKeys, 250*time.Millisecond, &common.NullLogger{}, true),
core.ConfigRoundShift)
req.NoError(err)
// Change default round interval, expect 1 round produce 30 blocks.
gov.State().RequestChange(test.StateChangeRoundInterval, 15*time.Second)
// Setup nodes.
nodes, err := PrepareNodes(
gov, prvKeys, maxNumChains, networkLatency, proposingLatency)
req.NoError(err)
// Set scheduler.
apps, dbs := CollectAppAndDBFromNodes(nodes)
now := time.Now().UTC()
sch := test.NewScheduler(test.NewStopByRound(9, apps, dbs))
for _, n := range nodes {
req.NoError(n.Bootstrap(sch, now))
}
// Register some configuration changes at some node.
var pickedNode *Node
for _, pickedNode = range nodes {
break
}
// Config changes for round 5, numChains from 4 to 7.
req.NoError(pickedNode.gov().RegisterConfigChange(
5, test.StateChangeNumChains, uint32(7)))
req.NoError(pickedNode.gov().RegisterConfigChange(
5, test.StateChangeK, 3))
req.NoError(pickedNode.gov().RegisterConfigChange(
5, test.StateChangePhiRatio, float32(0.5)))
// Config changes for round 6, numChains from 7 to 9.
req.NoError(pickedNode.gov().RegisterConfigChange(
6, test.StateChangeNumChains, maxNumChains))
req.NoError(pickedNode.gov().RegisterConfigChange(
6, test.StateChangeK, 0))
// Config changes for round 7, numChains from 9 to 7.
req.NoError(pickedNode.gov().RegisterConfigChange(
7, test.StateChangeNumChains, uint32(7)))
req.NoError(pickedNode.gov().RegisterConfigChange(
7, test.StateChangeK, 1))
// Config changes for round 8, numChains from 7 to 5.
req.NoError(pickedNode.gov().RegisterConfigChange(
8, test.StateChangeNumChains, uint32(5)))
req.NoError(pickedNode.gov().RegisterConfigChange(
8, test.StateChangeK, 1))
// Perform test.
sch.Run(4)
// Check results by comparing test.App instances.
req.NoError(VerifyApps(apps))
}
func TestWithScheduler(t *testing.T) {
suite.Run(t, new(WithSchedulerTestSuite))
}
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