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package core
import (
"bytes"
"fmt"
"os"
"path"
"runtime"
"strconv"
"testing"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/rlp"
)
func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
ethutil.ReadConfig("/tmp/ethtest", "/tmp/ethtest", "ETH")
}
func loadChain(fn string, t *testing.T) (types.Blocks, error) {
fh, err := os.OpenFile(path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "_data", fn), os.O_RDONLY, os.ModePerm)
if err != nil {
return nil, err
}
defer fh.Close()
var chain types.Blocks
if err := rlp.Decode(fh, &chain); err != nil {
return nil, err
}
return chain, nil
}
func insertChain(done chan bool, chainMan *ChainManager, chain types.Blocks, t *testing.T) {
err := chainMan.InsertChain(chain)
if err != nil {
fmt.Println(err)
t.FailNow()
}
done <- true
}
func TestChainInsertions(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
chain1, err := loadChain("valid1", t)
if err != nil {
fmt.Println(err)
t.FailNow()
}
chain2, err := loadChain("valid2", t)
if err != nil {
fmt.Println(err)
t.FailNow()
}
var eventMux event.TypeMux
chainMan := NewChainManager(db, &eventMux)
txPool := NewTxPool(&eventMux)
blockMan := NewBlockProcessor(db, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
const max = 2
done := make(chan bool, max)
go insertChain(done, chainMan, chain1, t)
go insertChain(done, chainMan, chain2, t)
for i := 0; i < max; i++ {
<-done
}
if bytes.Equal(chain2[len(chain2)-1].Hash(), chainMan.CurrentBlock().Hash()) {
t.Error("chain2 is canonical and shouldn't be")
}
if !bytes.Equal(chain1[len(chain1)-1].Hash(), chainMan.CurrentBlock().Hash()) {
t.Error("chain1 isn't canonical and should be")
}
}
func TestChainMultipleInsertions(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
const max = 4
chains := make([]types.Blocks, max)
var longest int
for i := 0; i < max; i++ {
var err error
name := "valid" + strconv.Itoa(i+1)
chains[i], err = loadChain(name, t)
if len(chains[i]) >= len(chains[longest]) {
longest = i
}
fmt.Println("loaded", name, "with a length of", len(chains[i]))
if err != nil {
fmt.Println(err)
t.FailNow()
}
}
var eventMux event.TypeMux
chainMan := NewChainManager(db, &eventMux)
txPool := NewTxPool(&eventMux)
blockMan := NewBlockProcessor(db, txPool, chainMan, &eventMux)
chainMan.SetProcessor(blockMan)
done := make(chan bool, max)
for i, chain := range chains {
// XXX the go routine would otherwise reference the same (chain[3]) variable and fail
i := i
chain := chain
go func() {
insertChain(done, chainMan, chain, t)
fmt.Println(i, "done")
}()
}
for i := 0; i < max; i++ {
<-done
}
if !bytes.Equal(chains[longest][len(chains[longest])-1].Hash(), chainMan.CurrentBlock().Hash()) {
t.Error("Invalid canonical chain")
}
}
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