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// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum 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 go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package bloombits
import (
"math/rand"
"sync/atomic"
"testing"
"time"
"github.com/ethereum/go-ethereum/core/types"
)
const testSectionSize = 4096
func matcherTestVector(b uint, s uint64) []byte {
r := make([]byte, testSectionSize/8)
for i, _ := range r {
var bb byte
for bit := 0; bit < 8; bit++ {
blockIdx := s*testSectionSize + uint64(i*8+bit)
bb += bb
if (blockIdx % uint64(b)) == 0 {
bb++
}
}
r[i] = bb
}
return r
}
func expMatch1(idxs types.BloomIndexList, i uint64) bool {
for _, ii := range idxs {
if (i % uint64(ii)) != 0 {
return false
}
}
return true
}
func expMatch2(idxs []types.BloomIndexList, i uint64) bool {
for _, ii := range idxs {
if expMatch1(ii, i) {
return true
}
}
return false
}
func expMatch3(idxs [][]types.BloomIndexList, i uint64) bool {
for _, ii := range idxs {
if !expMatch2(ii, i) {
return false
}
}
return true
}
func testServeMatcher(m *Matcher, stop chan struct{}, cnt *uint32, maxRequestLen int) {
// serve matcher with test vectors
for i := 0; i < 10; i++ {
go func() {
for {
select {
case <-stop:
return
default:
}
b, ok := m.AllocSectionQueue()
if !ok {
return
}
if m.SectionCount(b) < maxRequestLen {
time.Sleep(time.Microsecond * 100)
}
s := m.FetchSections(b, maxRequestLen)
res := make([][]byte, len(s))
for i, ss := range s {
res[i] = matcherTestVector(b, ss)
atomic.AddUint32(cnt, 1)
}
m.Deliver(b, s, res)
}
}()
}
}
func testMatcher(t *testing.T, idxs [][]types.BloomIndexList, cnt uint64, stopOnMatches bool, expCount uint32) uint32 {
count1 := testMatcherWithReqCount(t, idxs, cnt, stopOnMatches, expCount, 1)
count16 := testMatcherWithReqCount(t, idxs, cnt, stopOnMatches, expCount, 16)
if count1 != count16 {
t.Errorf("Error matching idxs = %v count = %v stopOnMatches = %v: request count mismatch, %v with maxReqCount = 1 vs. %v with maxReqCount = 16", idxs, cnt, stopOnMatches, count1, count16)
}
return count1
}
func testMatcherWithReqCount(t *testing.T, idxs [][]types.BloomIndexList, cnt uint64, stopOnMatches bool, expCount uint32, maxReqCount int) uint32 {
m := NewMatcher(testSectionSize, nil, nil)
for _, idxss := range idxs {
for _, idxs := range idxss {
for _, idx := range idxs {
m.newFetcher(idx)
}
}
}
m.addresses = idxs[0]
m.topics = idxs[1:]
var reqCount uint32
stop := make(chan struct{})
chn := m.Start(0, cnt-1)
testServeMatcher(m, stop, &reqCount, maxReqCount)
for i := uint64(0); i < cnt; i++ {
if expMatch3(idxs, i) {
match, ok := <-chn
if !ok {
t.Errorf("Error matching idxs = %v count = %v stopOnMatches = %v: expected #%v, results channel closed", idxs, cnt, stopOnMatches, i)
return 0
}
if match != i {
t.Errorf("Error matching idxs = %v count = %v stopOnMatches = %v: expected #%v, got #%v", idxs, cnt, stopOnMatches, i, match)
}
if stopOnMatches {
m.Stop()
close(stop)
stop = make(chan struct{})
chn = m.Start(i+1, cnt-1)
testServeMatcher(m, stop, &reqCount, maxReqCount)
}
}
}
match, ok := <-chn
if ok {
t.Errorf("Error matching idxs = %v count = %v stopOnMatches = %v: expected closed channel, got #%v", idxs, cnt, stopOnMatches, match)
}
m.Stop()
close(stop)
if expCount != 0 && expCount != reqCount {
t.Errorf("Error matching idxs = %v count = %v stopOnMatches = %v: request count mismatch, expected #%v, got #%v", idxs, cnt, stopOnMatches, expCount, reqCount)
}
return reqCount
}
func testRandomIdxs(l []int, max int) [][]types.BloomIndexList {
res := make([][]types.BloomIndexList, len(l))
for i, ll := range l {
res[i] = make([]types.BloomIndexList, ll)
for j, _ := range res[i] {
for k, _ := range res[i][j] {
res[i][j][k] = uint(rand.Intn(max-1) + 2)
}
}
}
return res
}
func TestMatcher(t *testing.T) {
testMatcher(t, [][]types.BloomIndexList{{{10, 20, 30}}}, 100000, false, 75)
testMatcher(t, [][]types.BloomIndexList{{{32, 3125, 100}}, {{40, 50, 10}}}, 100000, false, 81)
testMatcher(t, [][]types.BloomIndexList{{{4, 8, 11}, {7, 8, 17}}, {{9, 9, 12}, {15, 20, 13}}, {{18, 15, 15}, {12, 10, 4}}}, 10000, false, 36)
}
func TestMatcherStopOnMatches(t *testing.T) {
testMatcher(t, [][]types.BloomIndexList{{{10, 20, 30}}}, 100000, true, 75)
testMatcher(t, [][]types.BloomIndexList{{{4, 8, 11}, {7, 8, 17}}, {{9, 9, 12}, {15, 20, 13}}, {{18, 15, 15}, {12, 10, 4}}}, 10000, true, 36)
}
func TestMatcherRandom(t *testing.T) {
for i := 0; i < 20; i++ {
testMatcher(t, testRandomIdxs([]int{1}, 50), 100000, false, 0)
testMatcher(t, testRandomIdxs([]int{3}, 50), 100000, false, 0)
testMatcher(t, testRandomIdxs([]int{2, 2, 2}, 20), 100000, false, 0)
testMatcher(t, testRandomIdxs([]int{5, 5, 5}, 50), 100000, false, 0)
idxs := testRandomIdxs([]int{2, 2, 2}, 20)
reqCount := testMatcher(t, idxs, 10000, false, 0)
testMatcher(t, idxs, 10000, true, reqCount)
}
}
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