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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 core
import (
"testing"
"time"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/crypto"
"github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa"
"github.com/dexon-foundation/dexon-consensus/core/test"
"github.com/dexon-foundation/dexon-consensus/core/types"
"github.com/stretchr/testify/suite"
)
type nsIntf struct {
s *NodeSetCacheTestSuite
crs common.Hash
curKeys []crypto.PublicKey
}
func (g *nsIntf) Configuration(round uint64) (cfg *types.Config) {
return &types.Config{
NotarySetSize: 7,
DKGSetSize: 7,
NumChains: 4,
}
}
func (g *nsIntf) CRS(round uint64) (b common.Hash) { return g.crs }
func (g *nsIntf) NodeSet(round uint64) []crypto.PublicKey {
// Randomly generating keys, and check them for verification.
g.curKeys = []crypto.PublicKey{}
for i := 0; i < 10; i++ {
prvKey, err := ecdsa.NewPrivateKey()
g.s.Require().NoError(err)
g.curKeys = append(g.curKeys, prvKey.PublicKey())
}
return g.curKeys
}
type NodeSetCacheTestSuite struct {
suite.Suite
}
func (s *NodeSetCacheTestSuite) TestGovernanceIntf() {
// NodeSetCacheInterface should let Governance implement it.
var gov Governance
_, pubKeys, err := test.NewKeys(7)
s.Require().NoError(err)
gov, err = test.NewGovernance(pubKeys, 250*time.Millisecond)
s.Require().NoError(err)
_, ok := gov.(NodeSetCacheInterface)
s.True(ok)
}
func (s *NodeSetCacheTestSuite) TestBasicUsage() {
var (
nsIntf = &nsIntf{
s: s,
crs: common.NewRandomHash(),
}
cache = NewNodeSetCache(nsIntf)
req = s.Require()
)
chk := func(
cache *NodeSetCache, round uint64, nodeSet map[types.NodeID]struct{}) {
for nID := range nodeSet {
// It should exists.
exists, err := cache.Exists(round, nID)
req.NoError(err)
req.True(exists)
// We could get keys.
key, exists := cache.GetPublicKey(nID)
req.NotNil(key)
req.True(exists)
}
}
// Try to get round 0.
nodeSet0, err := cache.GetNodeSet(0)
req.NoError(err)
chk(cache, 0, nodeSet0.IDs)
notarySet, err := cache.GetNotarySet(0, 0)
req.NoError(err)
chk(cache, 0, notarySet)
dkgSet, err := cache.GetDKGSet(0)
req.NoError(err)
chk(cache, 0, dkgSet)
// Try to get round 1.
nodeSet1, err := cache.GetNodeSet(1)
req.NoError(err)
chk(cache, 0, nodeSet0.IDs)
chk(cache, 1, nodeSet1.IDs)
// Try to get round 6, round 0 should be purged.
nodeSet6, err := cache.GetNodeSet(6)
req.NoError(err)
chk(cache, 1, nodeSet1.IDs)
chk(cache, 6, nodeSet6.IDs)
for nID := range nodeSet0.IDs {
_, exists := cache.GetPublicKey(nID)
req.False(exists)
}
}
func TestNodeSetCache(t *testing.T) {
suite.Run(t, new(NodeSetCacheTestSuite))
}
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