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package derive
import (
"context"
"errors"
"fmt"
"math/big"
"math/rand"
"testing"
"github.com/stretchr/testify/require"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
"github.com/ethereum-optimism/optimism/op-node/eth"
"github.com/ethereum-optimism/optimism/op-node/rollup"
"github.com/ethereum-optimism/optimism/op-node/testutils"
)
func TestPreparePayloadAttributes(t *testing.T) {
// test sysCfg, only init the necessary fields
cfg := &rollup.Config{
BlockTime: 2,
L1ChainID: big.NewInt(101),
L2ChainID: big.NewInt(102),
DepositContractAddress: common.Address{0xbb},
L1SystemConfigAddress: common.Address{0xcc},
}
testSysCfg := eth.SystemConfig{
BatcherAddr: common.Address{42},
Overhead: [32]byte{},
Scalar: [32]byte{},
}
t.Run("inconsistent next height origin", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
l1Info := testutils.RandomBlockInfo(rng)
l1Info.InfoNum = l2Parent.L1Origin.Number + 1
epoch := l1Info.ID()
l1Fetcher.ExpectFetchReceipts(epoch.Hash, l1Info, nil, nil)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
_, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.NotNil(t, err, "inconsistent L1 origin error expected")
require.ErrorIs(t, err, ErrReset, "inconsistent L1 origin transition must be handled like a critical error with reorg")
})
t.Run("inconsistent equal height origin", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
l1Info := testutils.RandomBlockInfo(rng)
l1Info.InfoNum = l2Parent.L1Origin.Number
epoch := l1Info.ID()
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
_, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.NotNil(t, err, "inconsistent L1 origin error expected")
require.ErrorIs(t, err, ErrReset, "inconsistent L1 origin transition must be handled like a critical error with reorg")
})
t.Run("rpc fail Fetch", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
epoch := l2Parent.L1Origin
epoch.Number += 1
mockRPCErr := errors.New("mock rpc error")
l1Fetcher.ExpectFetchReceipts(epoch.Hash, nil, nil, mockRPCErr)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
_, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.ErrorIs(t, err, mockRPCErr, "mock rpc error expected")
require.ErrorIs(t, err, ErrTemporary, "rpc errors should not be critical, it is not necessary to reorg")
})
t.Run("rpc fail InfoByHash", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
epoch := l2Parent.L1Origin
mockRPCErr := errors.New("mock rpc error")
l1Fetcher.ExpectInfoByHash(epoch.Hash, nil, mockRPCErr)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
_, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.ErrorIs(t, err, mockRPCErr, "mock rpc error expected")
require.ErrorIs(t, err, ErrTemporary, "rpc errors should not be critical, it is not necessary to reorg")
})
t.Run("next origin without deposits", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
l1Info := testutils.RandomBlockInfo(rng)
l1Info.InfoParentHash = l2Parent.L1Origin.Hash
l1Info.InfoNum = l2Parent.L1Origin.Number + 1
epoch := l1Info.ID()
l1InfoTx, err := L1InfoDepositBytes(0, l1Info, testSysCfg)
require.NoError(t, err)
l1Fetcher.ExpectFetchReceipts(epoch.Hash, l1Info, nil, nil)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
attrs, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.NoError(t, err)
require.NotNil(t, attrs)
require.Equal(t, l2Parent.Time+cfg.BlockTime, uint64(attrs.Timestamp))
require.Equal(t, eth.Bytes32(l1Info.InfoMixDigest), attrs.PrevRandao)
require.Equal(t, predeploys.SequencerFeeVaultAddr, attrs.SuggestedFeeRecipient)
require.Equal(t, 1, len(attrs.Transactions))
require.Equal(t, l1InfoTx, []byte(attrs.Transactions[0]))
require.True(t, attrs.NoTxPool)
})
t.Run("next origin with deposits", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
l1Info := testutils.RandomBlockInfo(rng)
l1Info.InfoParentHash = l2Parent.L1Origin.Hash
l1Info.InfoNum = l2Parent.L1Origin.Number + 1
receipts, depositTxs, err := makeReceipts(rng, l1Info.InfoHash, cfg.DepositContractAddress, []receiptData{
{goodReceipt: true, DepositLogs: []bool{true, false}},
{goodReceipt: true, DepositLogs: []bool{true}},
{goodReceipt: false, DepositLogs: []bool{true}},
{goodReceipt: false, DepositLogs: []bool{false}},
})
require.NoError(t, err)
usedDepositTxs, err := encodeDeposits(depositTxs)
require.NoError(t, err)
epoch := l1Info.ID()
l1InfoTx, err := L1InfoDepositBytes(0, l1Info, testSysCfg)
require.NoError(t, err)
l2Txs := append(append(make([]eth.Data, 0), l1InfoTx), usedDepositTxs...)
l1Fetcher.ExpectFetchReceipts(epoch.Hash, l1Info, receipts, nil)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
attrs, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.NoError(t, err)
require.NotNil(t, attrs)
require.Equal(t, l2Parent.Time+cfg.BlockTime, uint64(attrs.Timestamp))
require.Equal(t, eth.Bytes32(l1Info.InfoMixDigest), attrs.PrevRandao)
require.Equal(t, predeploys.SequencerFeeVaultAddr, attrs.SuggestedFeeRecipient)
require.Equal(t, len(l2Txs), len(attrs.Transactions), "Expected txs to equal l1 info tx + user deposit txs")
require.Equal(t, l2Txs, attrs.Transactions)
require.True(t, attrs.NoTxPool)
})
t.Run("same origin again", func(t *testing.T) {
rng := rand.New(rand.NewSource(1234))
l1Fetcher := &testutils.MockL1Source{}
defer l1Fetcher.AssertExpectations(t)
l2Parent := testutils.RandomL2BlockRef(rng)
l1CfgFetcher := &testutils.MockL2Client{}
l1CfgFetcher.ExpectSystemConfigByL2Hash(l2Parent.Hash, testSysCfg, nil)
defer l1CfgFetcher.AssertExpectations(t)
l1Info := testutils.RandomBlockInfo(rng)
l1Info.InfoHash = l2Parent.L1Origin.Hash
l1Info.InfoNum = l2Parent.L1Origin.Number
epoch := l1Info.ID()
l1InfoTx, err := L1InfoDepositBytes(l2Parent.SequenceNumber+1, l1Info, testSysCfg)
require.NoError(t, err)
l1Fetcher.ExpectInfoByHash(epoch.Hash, l1Info, nil)
attrBuilder := NewFetchingAttributesBuilder(cfg, l1Fetcher, l1CfgFetcher)
attrs, err := attrBuilder.PreparePayloadAttributes(context.Background(), l2Parent, epoch)
require.NoError(t, err)
require.NotNil(t, attrs)
require.Equal(t, l2Parent.Time+cfg.BlockTime, uint64(attrs.Timestamp))
require.Equal(t, eth.Bytes32(l1Info.InfoMixDigest), attrs.PrevRandao)
require.Equal(t, predeploys.SequencerFeeVaultAddr, attrs.SuggestedFeeRecipient)
require.Equal(t, 1, len(attrs.Transactions))
require.Equal(t, l1InfoTx, []byte(attrs.Transactions[0]))
require.True(t, attrs.NoTxPool)
})
}
func encodeDeposits(deposits []*types.DepositTx) (out []eth.Data, err error) {
for i, tx := range deposits {
opaqueTx, err := types.NewTx(tx).MarshalBinary()
if err != nil {
return nil, fmt.Errorf("bad deposit %d: %w", i, err)
}
out = append(out, opaqueTx)
}
return
}