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package l2
import (
"context"
"math/big"
"testing"
"github.com/ethereum-optimism/optimism/op-node/chaincfg"
"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/trie"
"github.com/stretchr/testify/require"
)
// Should implement derive.Engine
var _ derive.Engine = (*OracleEngine)(nil)
func TestPayloadByHash(t *testing.T) {
ctx := context.Background()
t.Run("KnownBlock", func(t *testing.T) {
engine, stub := createOracleEngine(t)
block := stub.head
payload, err := engine.PayloadByHash(ctx, block.Hash())
require.NoError(t, err)
expected, err := eth.BlockAsPayload(block)
require.NoError(t, err)
require.Equal(t, expected, payload)
})
t.Run("UnknownBlock", func(t *testing.T) {
engine, _ := createOracleEngine(t)
hash := common.HexToHash("0x878899")
payload, err := engine.PayloadByHash(ctx, hash)
require.ErrorIs(t, err, ErrNotFound)
require.Nil(t, payload)
})
}
func TestPayloadByNumber(t *testing.T) {
ctx := context.Background()
t.Run("KnownBlock", func(t *testing.T) {
engine, stub := createOracleEngine(t)
block := stub.head
payload, err := engine.PayloadByNumber(ctx, block.NumberU64())
require.NoError(t, err)
expected, err := eth.BlockAsPayload(block)
require.NoError(t, err)
require.Equal(t, expected, payload)
})
t.Run("NoCanonicalHash", func(t *testing.T) {
engine, _ := createOracleEngine(t)
payload, err := engine.PayloadByNumber(ctx, uint64(700))
require.ErrorIs(t, err, ErrNotFound)
require.Nil(t, payload)
})
t.Run("UnknownBlock", func(t *testing.T) {
engine, stub := createOracleEngine(t)
hash := common.HexToHash("0x878899")
number := uint64(700)
stub.canonical[number] = hash
payload, err := engine.PayloadByNumber(ctx, number)
require.ErrorIs(t, err, ErrNotFound)
require.Nil(t, payload)
})
}
func TestL2BlockRefByLabel(t *testing.T) {
ctx := context.Background()
engine, stub := createOracleEngine(t)
tests := []struct {
name eth.BlockLabel
block *types.Block
}{
{eth.Unsafe, stub.head},
{eth.Safe, stub.safe},
{eth.Finalized, stub.finalized},
}
for _, test := range tests {
t.Run(string(test.name), func(t *testing.T) {
expected, err := derive.L2BlockToBlockRef(test.block, &engine.rollupCfg.Genesis)
require.NoError(t, err)
blockRef, err := engine.L2BlockRefByLabel(ctx, test.name)
require.NoError(t, err)
require.Equal(t, expected, blockRef)
})
}
t.Run("UnknownLabel", func(t *testing.T) {
_, err := engine.L2BlockRefByLabel(ctx, "nope")
require.ErrorContains(t, err, "unknown label")
})
}
func TestL2BlockRefByHash(t *testing.T) {
ctx := context.Background()
engine, stub := createOracleEngine(t)
t.Run("KnownBlock", func(t *testing.T) {
expected, err := derive.L2BlockToBlockRef(stub.safe, &engine.rollupCfg.Genesis)
require.NoError(t, err)
ref, err := engine.L2BlockRefByHash(ctx, stub.safe.Hash())
require.NoError(t, err)
require.Equal(t, expected, ref)
})
t.Run("UnknownBlock", func(t *testing.T) {
ref, err := engine.L2BlockRefByHash(ctx, common.HexToHash("0x878899"))
require.ErrorIs(t, err, ErrNotFound)
require.Equal(t, eth.L2BlockRef{}, ref)
})
}
func TestSystemConfigByL2Hash(t *testing.T) {
ctx := context.Background()
engine, stub := createOracleEngine(t)
t.Run("KnownBlock", func(t *testing.T) {
payload, err := eth.BlockAsPayload(stub.safe)
require.NoError(t, err)
expected, err := derive.PayloadToSystemConfig(payload, engine.rollupCfg)
require.NoError(t, err)
cfg, err := engine.SystemConfigByL2Hash(ctx, stub.safe.Hash())
require.NoError(t, err)
require.Equal(t, expected, cfg)
})
t.Run("UnknownBlock", func(t *testing.T) {
ref, err := engine.SystemConfigByL2Hash(ctx, common.HexToHash("0x878899"))
require.ErrorIs(t, err, ErrNotFound)
require.Equal(t, eth.SystemConfig{}, ref)
})
}
func createOracleEngine(t *testing.T) (*OracleEngine, *stubEngineBackend) {
head := createL2Block(t, 4)
safe := createL2Block(t, 3)
finalized := createL2Block(t, 2)
backend := &stubEngineBackend{
head: head,
safe: safe,
finalized: finalized,
blocks: map[common.Hash]*types.Block{
head.Hash(): head,
safe.Hash(): safe,
finalized.Hash(): finalized,
},
canonical: map[uint64]common.Hash{
head.NumberU64(): head.Hash(),
safe.NumberU64(): safe.Hash(),
finalized.NumberU64(): finalized.Hash(),
},
}
engine := OracleEngine{
backend: backend,
rollupCfg: chaincfg.Goerli,
}
return &engine, backend
}
func createL2Block(t *testing.T, number int) *types.Block {
tx, err := derive.L1InfoDeposit(uint64(1), eth.HeaderBlockInfo(&types.Header{
Number: big.NewInt(32),
BaseFee: big.NewInt(7),
}), eth.SystemConfig{}, true)
require.NoError(t, err)
header := &types.Header{
Number: big.NewInt(int64(number)),
BaseFee: big.NewInt(7),
}
return types.NewBlock(header, []*types.Transaction{types.NewTx(tx)}, nil, nil, trie.NewStackTrie(nil))
}
type stubEngineBackend struct {
head *types.Block
safe *types.Block
finalized *types.Block
blocks map[common.Hash]*types.Block
canonical map[uint64]common.Hash
}
func (s stubEngineBackend) CurrentHeader() *types.Header {
return s.head.Header()
}
func (s stubEngineBackend) CurrentSafeBlock() *types.Header {
return s.safe.Header()
}
func (s stubEngineBackend) CurrentFinalBlock() *types.Header {
return s.finalized.Header()
}
func (s stubEngineBackend) GetBlockByHash(hash common.Hash) *types.Block {
return s.blocks[hash]
}
func (s stubEngineBackend) GetCanonicalHash(n uint64) common.Hash {
return s.canonical[n]
}
func (s stubEngineBackend) GetBlock(hash common.Hash, number uint64) *types.Block {
panic("unsupported")
}
func (s stubEngineBackend) HasBlockAndState(hash common.Hash, number uint64) bool {
panic("unsupported")
}
func (s stubEngineBackend) GetVMConfig() *vm.Config {
panic("unsupported")
}
func (s stubEngineBackend) Config() *params.ChainConfig {
panic("unsupported")
}
func (s stubEngineBackend) Engine() consensus.Engine {
panic("unsupported")
}
func (s stubEngineBackend) StateAt(root common.Hash) (*state.StateDB, error) {
panic("unsupported")
}
func (s stubEngineBackend) InsertBlockWithoutSetHead(block *types.Block) error {
panic("unsupported")
}
func (s stubEngineBackend) SetCanonical(head *types.Block) (common.Hash, error) {
panic("unsupported")
}
func (s stubEngineBackend) SetFinalized(header *types.Header) {
panic("unsupported")
}
func (s stubEngineBackend) SetSafe(header *types.Header) {
panic("unsupported")
}
func (s stubEngineBackend) GetHeader(hash common.Hash, number uint64) *types.Header {
panic("unsupported")
}
func (s stubEngineBackend) GetHeaderByNumber(number uint64) *types.Header {
panic("unsupported")
}
func (s stubEngineBackend) GetHeaderByHash(hash common.Hash) *types.Header {
panic("unsupported")
}
func (s stubEngineBackend) GetTd(hash common.Hash, number uint64) *big.Int {
panic("unsupported")
}