lotus/chain/sync_test.go

833 lines
21 KiB
Go

package chain_test
import (
"context"
"fmt"
"os"
"testing"
"time"
"github.com/filecoin-project/specs-actors/actors/runtime/proof"
"github.com/ipfs/go-cid"
ds "github.com/ipfs/go-datastore"
logging "github.com/ipfs/go-log/v2"
"github.com/libp2p/go-libp2p-core/peer"
mocknet "github.com/libp2p/go-libp2p/p2p/net/mock"
"github.com/stretchr/testify/require"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/actors/policy"
"github.com/filecoin-project/lotus/chain/gen"
"github.com/filecoin-project/lotus/chain/gen/slashfilter"
"github.com/filecoin-project/lotus/chain/store"
"github.com/filecoin-project/lotus/chain/types"
mocktypes "github.com/filecoin-project/lotus/chain/types/mock"
"github.com/filecoin-project/lotus/node"
"github.com/filecoin-project/lotus/node/impl"
"github.com/filecoin-project/lotus/node/modules"
"github.com/filecoin-project/lotus/node/repo"
)
func init() {
build.InsecurePoStValidation = true
err := os.Setenv("TRUST_PARAMS", "1")
if err != nil {
panic(err)
}
policy.SetSupportedProofTypes(abi.RegisteredSealProof_StackedDrg2KiBV1)
policy.SetConsensusMinerMinPower(abi.NewStoragePower(2048))
policy.SetMinVerifiedDealSize(abi.NewStoragePower(256))
}
const source = 0
func (tu *syncTestUtil) repoWithChain(t testing.TB, h int) (repo.Repo, []byte, []*store.FullTipSet) {
blks := make([]*store.FullTipSet, h)
for i := 0; i < h; i++ {
mts, err := tu.g.NextTipSet()
require.NoError(t, err)
blks[i] = mts.TipSet
}
r, err := tu.g.YieldRepo()
require.NoError(t, err)
genb, err := tu.g.GenesisCar()
require.NoError(t, err)
return r, genb, blks
}
type syncTestUtil struct {
t testing.TB
ctx context.Context
cancel func()
mn mocknet.Mocknet
g *gen.ChainGen
genesis []byte
blocks []*store.FullTipSet
nds []api.FullNode
}
func prepSyncTest(t testing.TB, h int) *syncTestUtil {
logging.SetLogLevel("*", "INFO")
g, err := gen.NewGenerator()
if err != nil {
t.Fatalf("%+v", err)
}
ctx, cancel := context.WithCancel(context.Background())
tu := &syncTestUtil{
t: t,
ctx: ctx,
cancel: cancel,
mn: mocknet.New(ctx),
g: g,
}
tu.addSourceNode(h)
//tu.checkHeight("source", source, h)
// separate logs
fmt.Println("\x1b[31m///////////////////////////////////////////////////\x1b[39b")
return tu
}
func (tu *syncTestUtil) Shutdown() {
tu.cancel()
}
func (tu *syncTestUtil) printHeads() {
for i, n := range tu.nds {
head, err := n.ChainHead(tu.ctx)
if err != nil {
tu.t.Fatal(err)
}
fmt.Printf("Node %d: %s\n", i, head.Cids())
}
}
func (tu *syncTestUtil) pushFtsAndWait(to int, fts *store.FullTipSet, wait bool) {
// TODO: would be great if we could pass a whole tipset here...
tu.pushTsExpectErr(to, fts, false)
if wait {
start := time.Now()
h, err := tu.nds[to].ChainHead(tu.ctx)
require.NoError(tu.t, err)
for !h.Equals(fts.TipSet()) {
time.Sleep(time.Millisecond * 50)
h, err = tu.nds[to].ChainHead(tu.ctx)
require.NoError(tu.t, err)
if time.Since(start) > time.Second*10 {
tu.t.Fatal("took too long waiting for block to be accepted")
}
}
}
}
func (tu *syncTestUtil) pushTsExpectErr(to int, fts *store.FullTipSet, experr bool) {
for _, fb := range fts.Blocks {
var b types.BlockMsg
// -1 to match block.Height
b.Header = fb.Header
for _, msg := range fb.SecpkMessages {
c, err := tu.nds[to].(*impl.FullNodeAPI).ChainAPI.Chain.PutMessage(msg)
require.NoError(tu.t, err)
b.SecpkMessages = append(b.SecpkMessages, c)
}
for _, msg := range fb.BlsMessages {
c, err := tu.nds[to].(*impl.FullNodeAPI).ChainAPI.Chain.PutMessage(msg)
require.NoError(tu.t, err)
b.BlsMessages = append(b.BlsMessages, c)
}
err := tu.nds[to].SyncSubmitBlock(tu.ctx, &b)
if experr {
require.Error(tu.t, err, "expected submit block to fail")
} else {
require.NoError(tu.t, err)
}
}
}
func (tu *syncTestUtil) mineOnBlock(blk *store.FullTipSet, to int, miners []int, wait, fail bool, msgs [][]*types.SignedMessage) *store.FullTipSet {
if miners == nil {
for i := range tu.g.Miners {
miners = append(miners, i)
}
}
var maddrs []address.Address
for _, i := range miners {
maddrs = append(maddrs, tu.g.Miners[i])
}
fmt.Println("Miner mining block: ", maddrs)
var nts *store.FullTipSet
var err error
if msgs != nil {
nts, err = tu.g.NextTipSetFromMinersWithMessages(blk.TipSet(), maddrs, msgs)
require.NoError(tu.t, err)
} else {
mt, err := tu.g.NextTipSetFromMiners(blk.TipSet(), maddrs)
require.NoError(tu.t, err)
nts = mt.TipSet
}
if fail {
tu.pushTsExpectErr(to, nts, true)
} else {
tu.pushFtsAndWait(to, nts, wait)
}
return nts
}
func (tu *syncTestUtil) mineNewBlock(src int, miners []int) {
mts := tu.mineOnBlock(tu.g.CurTipset, src, miners, true, false, nil)
tu.g.CurTipset = mts
}
func (tu *syncTestUtil) addSourceNode(gen int) {
if tu.genesis != nil {
tu.t.Fatal("source node already exists")
}
sourceRepo, genesis, blocks := tu.repoWithChain(tu.t, gen)
var out api.FullNode
stop, err := node.New(tu.ctx,
node.FullAPI(&out, false),
node.Online(),
node.Repo(sourceRepo),
node.MockHost(tu.mn),
node.Test(),
node.Override(new(modules.Genesis), modules.LoadGenesis(genesis)),
)
require.NoError(tu.t, err)
tu.t.Cleanup(func() { _ = stop(context.Background()) })
lastTs := blocks[len(blocks)-1].Blocks
for _, lastB := range lastTs {
cs := out.(*impl.FullNodeAPI).ChainAPI.Chain
require.NoError(tu.t, cs.AddToTipSetTracker(lastB.Header))
err = cs.AddBlock(tu.ctx, lastB.Header)
require.NoError(tu.t, err)
}
tu.genesis = genesis
tu.blocks = blocks
tu.nds = append(tu.nds, out) // always at 0
}
func (tu *syncTestUtil) addClientNode() int {
if tu.genesis == nil {
tu.t.Fatal("source doesn't exists")
}
var out api.FullNode
stop, err := node.New(tu.ctx,
node.FullAPI(&out, false),
node.Online(),
node.Repo(repo.NewMemory(nil)),
node.MockHost(tu.mn),
node.Test(),
node.Override(new(modules.Genesis), modules.LoadGenesis(tu.genesis)),
)
require.NoError(tu.t, err)
tu.t.Cleanup(func() { _ = stop(context.Background()) })
tu.nds = append(tu.nds, out)
return len(tu.nds) - 1
}
func (tu *syncTestUtil) pid(n int) peer.ID {
nal, err := tu.nds[n].NetAddrsListen(tu.ctx)
require.NoError(tu.t, err)
return nal.ID
}
func (tu *syncTestUtil) connect(from, to int) {
toPI, err := tu.nds[to].NetAddrsListen(tu.ctx)
require.NoError(tu.t, err)
err = tu.nds[from].NetConnect(tu.ctx, toPI)
require.NoError(tu.t, err)
}
func (tu *syncTestUtil) disconnect(from, to int) {
toPI, err := tu.nds[to].NetAddrsListen(tu.ctx)
require.NoError(tu.t, err)
err = tu.nds[from].NetDisconnect(tu.ctx, toPI.ID)
require.NoError(tu.t, err)
}
func (tu *syncTestUtil) checkHeight(name string, n int, h int) {
b, err := tu.nds[n].ChainHead(tu.ctx)
require.NoError(tu.t, err)
require.Equal(tu.t, uint64(h), b.Height())
fmt.Printf("%s H: %d\n", name, b.Height())
}
func (tu *syncTestUtil) compareSourceState(with int) {
sourceHead, err := tu.nds[source].ChainHead(tu.ctx)
require.NoError(tu.t, err)
targetHead, err := tu.nds[with].ChainHead(tu.ctx)
require.NoError(tu.t, err)
if !sourceHead.Equals(targetHead) {
fmt.Println("different chains: ", sourceHead.Height(), targetHead.Height())
tu.t.Fatalf("nodes were not synced correctly: %s != %s", sourceHead.Cids(), targetHead.Cids())
}
sourceAccounts, err := tu.nds[source].WalletList(tu.ctx)
require.NoError(tu.t, err)
for _, addr := range sourceAccounts {
sourceBalance, err := tu.nds[source].WalletBalance(tu.ctx, addr)
require.NoError(tu.t, err)
fmt.Printf("Source state check for %s, expect %s\n", addr, sourceBalance)
actBalance, err := tu.nds[with].WalletBalance(tu.ctx, addr)
require.NoError(tu.t, err)
require.Equal(tu.t, sourceBalance, actBalance)
fmt.Printf("Source state check <OK> for %s\n", addr)
}
}
func (tu *syncTestUtil) assertBad(node int, ts *types.TipSet) {
for _, blk := range ts.Cids() {
rsn, err := tu.nds[node].SyncCheckBad(context.TODO(), blk)
require.NoError(tu.t, err)
require.True(tu.t, len(rsn) != 0)
}
}
func (tu *syncTestUtil) getHead(node int) *types.TipSet {
ts, err := tu.nds[node].ChainHead(context.TODO())
require.NoError(tu.t, err)
return ts
}
func (tu *syncTestUtil) checkpointTs(node int, tsk types.TipSetKey) {
require.NoError(tu.t, tu.nds[node].SyncCheckpoint(context.TODO(), tsk))
}
func (tu *syncTestUtil) waitUntilNodeHasTs(node int, tsk types.TipSetKey) {
for {
_, err := tu.nds[node].ChainGetTipSet(context.TODO(), tsk)
if err != nil {
break
}
}
// Time to allow for syncing and validation
time.Sleep(2 * time.Second)
}
func (tu *syncTestUtil) waitUntilSync(from, to int) {
target, err := tu.nds[from].ChainHead(tu.ctx)
if err != nil {
tu.t.Fatal(err)
}
tu.waitUntilSyncTarget(to, target)
}
func (tu *syncTestUtil) waitUntilSyncTarget(to int, target *types.TipSet) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
hc, err := tu.nds[to].ChainNotify(ctx)
if err != nil {
tu.t.Fatal(err)
}
// TODO: some sort of timeout?
for n := range hc {
for _, c := range n {
if c.Val.Equals(target) {
return
}
}
}
}
func TestSyncSimple(t *testing.T) {
H := 50
tu := prepSyncTest(t, H)
client := tu.addClientNode()
//tu.checkHeight("client", client, 0)
require.NoError(t, tu.mn.LinkAll())
tu.connect(1, 0)
tu.waitUntilSync(0, client)
//tu.checkHeight("client", client, H)
tu.compareSourceState(client)
}
func TestSyncMining(t *testing.T) {
H := 50
tu := prepSyncTest(t, H)
client := tu.addClientNode()
//tu.checkHeight("client", client, 0)
require.NoError(t, tu.mn.LinkAll())
tu.connect(client, 0)
tu.waitUntilSync(0, client)
//tu.checkHeight("client", client, H)
tu.compareSourceState(client)
for i := 0; i < 5; i++ {
tu.mineNewBlock(0, nil)
tu.waitUntilSync(0, client)
tu.compareSourceState(client)
}
}
func TestSyncBadTimestamp(t *testing.T) {
H := 50
tu := prepSyncTest(t, H)
client := tu.addClientNode()
require.NoError(t, tu.mn.LinkAll())
tu.connect(client, 0)
tu.waitUntilSync(0, client)
base := tu.g.CurTipset
tu.g.Timestamper = func(pts *types.TipSet, tl abi.ChainEpoch) uint64 {
return pts.MinTimestamp() + (build.BlockDelaySecs / 2)
}
fmt.Println("BASE: ", base.Cids())
tu.printHeads()
a1 := tu.mineOnBlock(base, 0, nil, false, true, nil)
tu.g.Timestamper = nil
require.NoError(t, tu.g.ResyncBankerNonce(a1.TipSet()))
tu.nds[0].(*impl.FullNodeAPI).SlashFilter = slashfilter.New(ds.NewMapDatastore())
fmt.Println("After mine bad block!")
tu.printHeads()
a2 := tu.mineOnBlock(base, 0, nil, true, false, nil)
tu.waitUntilSync(0, client)
head, err := tu.nds[0].ChainHead(tu.ctx)
require.NoError(t, err)
if !head.Equals(a2.TipSet()) {
t.Fatalf("expected head to be %s, but got %s", a2.Cids(), head.Cids())
}
}
type badWpp struct{}
func (wpp badWpp) GenerateCandidates(context.Context, abi.PoStRandomness, uint64) ([]uint64, error) {
return []uint64{1}, nil
}
func (wpp badWpp) ComputeProof(context.Context, []proof.SectorInfo, abi.PoStRandomness) ([]proof.PoStProof, error) {
return []proof.PoStProof{
{
PoStProof: abi.RegisteredPoStProof_StackedDrgWinning2KiBV1,
ProofBytes: []byte("evil"),
},
}, nil
}
func TestSyncBadWinningPoSt(t *testing.T) {
H := 15
tu := prepSyncTest(t, H)
client := tu.addClientNode()
require.NoError(t, tu.mn.LinkAll())
tu.connect(client, 0)
tu.waitUntilSync(0, client)
base := tu.g.CurTipset
// both miners now produce invalid winning posts
tu.g.SetWinningPoStProver(tu.g.Miners[0], &badWpp{})
tu.g.SetWinningPoStProver(tu.g.Miners[1], &badWpp{})
// now ensure that new blocks are not accepted
tu.mineOnBlock(base, client, nil, false, true, nil)
}
func (tu *syncTestUtil) loadChainToNode(to int) {
// utility to simulate incoming blocks without miner process
// TODO: should call syncer directly, this won't work correctly in all cases
for i := 0; i < len(tu.blocks); i++ {
tu.pushFtsAndWait(to, tu.blocks[i], true)
}
}
func TestSyncFork(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
p1 := tu.addClientNode()
p2 := tu.addClientNode()
fmt.Println("GENESIS: ", tu.g.Genesis().Cid())
tu.loadChainToNode(p1)
tu.loadChainToNode(p2)
phead := func() {
h1, err := tu.nds[1].ChainHead(tu.ctx)
require.NoError(tu.t, err)
h2, err := tu.nds[2].ChainHead(tu.ctx)
require.NoError(tu.t, err)
fmt.Println("Node 1: ", h1.Cids(), h1.Parents(), h1.Height())
fmt.Println("Node 2: ", h2.Cids(), h1.Parents(), h2.Height())
//time.Sleep(time.Second * 2)
fmt.Println()
fmt.Println()
fmt.Println()
fmt.Println()
}
phead()
base := tu.g.CurTipset
fmt.Println("Mining base: ", base.TipSet().Cids(), base.TipSet().Height())
// The two nodes fork at this point into 'a' and 'b'
a1 := tu.mineOnBlock(base, p1, []int{0}, true, false, nil)
a := tu.mineOnBlock(a1, p1, []int{0}, true, false, nil)
a = tu.mineOnBlock(a, p1, []int{0}, true, false, nil)
require.NoError(t, tu.g.ResyncBankerNonce(a1.TipSet()))
// chain B will now be heaviest
b := tu.mineOnBlock(base, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
fmt.Println("A: ", a.Cids(), a.TipSet().Height())
fmt.Println("B: ", b.Cids(), b.TipSet().Height())
// Now for the fun part!!
require.NoError(t, tu.mn.LinkAll())
tu.connect(p1, p2)
tu.waitUntilSyncTarget(p1, b.TipSet())
tu.waitUntilSyncTarget(p2, b.TipSet())
phead()
}
// This test crafts a tipset with 2 blocks, A and B.
// A and B both include _different_ messages from sender X with nonce N (where N is the correct nonce for X).
// We can confirm that the state can be correctly computed, and that `MessagesForTipset` behaves as expected.
func TestDuplicateNonce(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
base := tu.g.CurTipset
// Produce a message from the banker to the rcvr
makeMsg := func(rcvr address.Address) *types.SignedMessage {
ba, err := tu.nds[0].StateGetActor(context.TODO(), tu.g.Banker(), base.TipSet().Key())
require.NoError(t, err)
msg := types.Message{
To: rcvr,
From: tu.g.Banker(),
Nonce: ba.Nonce,
Value: types.NewInt(1),
Method: 0,
GasLimit: 100_000_000,
GasFeeCap: types.NewInt(0),
GasPremium: types.NewInt(0),
}
sig, err := tu.g.Wallet().Sign(context.TODO(), tu.g.Banker(), msg.Cid().Bytes())
require.NoError(t, err)
return &types.SignedMessage{
Message: msg,
Signature: *sig,
}
}
msgs := make([][]*types.SignedMessage, 2)
// Each miner includes a message from the banker with the same nonce, but to different addresses
for k := range msgs {
msgs[k] = []*types.SignedMessage{makeMsg(tu.g.Miners[k])}
}
ts1 := tu.mineOnBlock(base, 0, []int{0, 1}, true, false, msgs)
tu.waitUntilSyncTarget(0, ts1.TipSet())
// mine another tipset
ts2 := tu.mineOnBlock(ts1, 0, []int{0, 1}, true, false, make([][]*types.SignedMessage, 2))
tu.waitUntilSyncTarget(0, ts2.TipSet())
var includedMsg cid.Cid
var skippedMsg cid.Cid
r0, err0 := tu.nds[0].StateGetReceipt(context.TODO(), msgs[0][0].Cid(), ts2.TipSet().Key())
r1, err1 := tu.nds[0].StateGetReceipt(context.TODO(), msgs[1][0].Cid(), ts2.TipSet().Key())
if err0 == nil {
require.Error(t, err1, "at least one of the StateGetReceipt calls should fail")
require.True(t, r0.ExitCode.IsSuccess())
includedMsg = msgs[0][0].Message.Cid()
skippedMsg = msgs[1][0].Message.Cid()
} else {
require.NoError(t, err1, "both the StateGetReceipt calls should not fail")
require.True(t, r1.ExitCode.IsSuccess())
includedMsg = msgs[1][0].Message.Cid()
skippedMsg = msgs[0][0].Message.Cid()
}
_, rslts, err := tu.g.StateManager().ExecutionTrace(context.TODO(), ts1.TipSet())
require.NoError(t, err)
found := false
for _, v := range rslts {
if v.Msg.Cid() == skippedMsg {
t.Fatal("skipped message should not be in exec trace")
}
if v.Msg.Cid() == includedMsg {
found = true
}
}
if !found {
t.Fatal("included message should be in exec trace")
}
mft, err := tu.g.ChainStore().MessagesForTipset(ts1.TipSet())
require.NoError(t, err)
require.True(t, len(mft) == 1, "only expecting one message for this tipset")
require.Equal(t, includedMsg, mft[0].VMMessage().Cid(), "messages for tipset didn't contain expected message")
}
// This test asserts that a block that includes a message with bad nonce can't be synced. A nonce is "bad" if it can't
// be applied on the parent state.
func TestBadNonce(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
base := tu.g.CurTipset
// Produce a message from the banker with a bad nonce
makeBadMsg := func() *types.SignedMessage {
ba, err := tu.nds[0].StateGetActor(context.TODO(), tu.g.Banker(), base.TipSet().Key())
require.NoError(t, err)
msg := types.Message{
To: tu.g.Banker(),
From: tu.g.Banker(),
Nonce: ba.Nonce + 5,
Value: types.NewInt(1),
Method: 0,
GasLimit: 100_000_000,
GasFeeCap: types.NewInt(0),
GasPremium: types.NewInt(0),
}
sig, err := tu.g.Wallet().Sign(context.TODO(), tu.g.Banker(), msg.Cid().Bytes())
require.NoError(t, err)
return &types.SignedMessage{
Message: msg,
Signature: *sig,
}
}
msgs := make([][]*types.SignedMessage, 1)
msgs[0] = []*types.SignedMessage{makeBadMsg()}
tu.mineOnBlock(base, 0, []int{0}, true, true, msgs)
}
func BenchmarkSyncBasic(b *testing.B) {
for i := 0; i < b.N; i++ {
runSyncBenchLength(b, 100)
}
}
func runSyncBenchLength(b *testing.B, l int) {
tu := prepSyncTest(b, l)
client := tu.addClientNode()
tu.checkHeight("client", client, 0)
b.ResetTimer()
require.NoError(b, tu.mn.LinkAll())
tu.connect(1, 0)
tu.waitUntilSync(0, client)
}
func TestSyncInputs(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
p1 := tu.addClientNode()
fn := tu.nds[p1].(*impl.FullNodeAPI)
s := fn.SyncAPI.Syncer
err := s.ValidateBlock(context.TODO(), &types.FullBlock{
Header: &types.BlockHeader{},
}, false)
if err == nil {
t.Fatal("should error on empty block")
}
h := mocktypes.MkBlock(nil, 123, 432)
h.ElectionProof = nil
err = s.ValidateBlock(context.TODO(), &types.FullBlock{Header: h}, false)
if err == nil {
t.Fatal("should error on block with nil election proof")
}
}
func TestSyncCheckpointHead(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
p1 := tu.addClientNode()
p2 := tu.addClientNode()
fmt.Println("GENESIS: ", tu.g.Genesis().Cid())
tu.loadChainToNode(p1)
tu.loadChainToNode(p2)
base := tu.g.CurTipset
fmt.Println("Mining base: ", base.TipSet().Cids(), base.TipSet().Height())
// The two nodes fork at this point into 'a' and 'b'
a1 := tu.mineOnBlock(base, p1, []int{0}, true, false, nil)
a := tu.mineOnBlock(a1, p1, []int{0}, true, false, nil)
a = tu.mineOnBlock(a, p1, []int{0}, true, false, nil)
tu.waitUntilSyncTarget(p1, a.TipSet())
tu.checkpointTs(p1, a.TipSet().Key())
require.NoError(t, tu.g.ResyncBankerNonce(a1.TipSet()))
// chain B will now be heaviest
b := tu.mineOnBlock(base, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
fmt.Println("A: ", a.Cids(), a.TipSet().Height())
fmt.Println("B: ", b.Cids(), b.TipSet().Height())
// Now for the fun part!! p1 should mark p2's head as BAD.
require.NoError(t, tu.mn.LinkAll())
tu.connect(p1, p2)
tu.waitUntilNodeHasTs(p1, b.TipSet().Key())
p1Head := tu.getHead(p1)
require.Equal(tu.t, p1Head, a.TipSet())
tu.assertBad(p1, b.TipSet())
}
func TestSyncCheckpointEarlierThanHead(t *testing.T) {
H := 10
tu := prepSyncTest(t, H)
p1 := tu.addClientNode()
p2 := tu.addClientNode()
fmt.Println("GENESIS: ", tu.g.Genesis().Cid())
tu.loadChainToNode(p1)
tu.loadChainToNode(p2)
base := tu.g.CurTipset
fmt.Println("Mining base: ", base.TipSet().Cids(), base.TipSet().Height())
// The two nodes fork at this point into 'a' and 'b'
a1 := tu.mineOnBlock(base, p1, []int{0}, true, false, nil)
a := tu.mineOnBlock(a1, p1, []int{0}, true, false, nil)
a = tu.mineOnBlock(a, p1, []int{0}, true, false, nil)
tu.waitUntilSyncTarget(p1, a.TipSet())
tu.checkpointTs(p1, a1.TipSet().Key())
require.NoError(t, tu.g.ResyncBankerNonce(a1.TipSet()))
// chain B will now be heaviest
b := tu.mineOnBlock(base, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
b = tu.mineOnBlock(b, p2, []int{1}, true, false, nil)
fmt.Println("A: ", a.Cids(), a.TipSet().Height())
fmt.Println("B: ", b.Cids(), b.TipSet().Height())
// Now for the fun part!! p1 should mark p2's head as BAD.
require.NoError(t, tu.mn.LinkAll())
tu.connect(p1, p2)
tu.waitUntilNodeHasTs(p1, b.TipSet().Key())
p1Head := tu.getHead(p1)
require.Equal(tu.t, p1Head, a.TipSet())
tu.assertBad(p1, b.TipSet())
}