Official Go implementation of the Ethereum protocol
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go-ethereum/eth/gasprice/gasprice_test.go

263 lines
8.3 KiB

// Copyright 2020 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 gasprice
import (
"context"
"crypto/sha256"
"fmt"
"math"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/consensus/beacon"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"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/crypto"
"github.com/ethereum/go-ethereum/crypto/kzg4844"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
"github.com/holiman/uint256"
)
const testHead = 32
type testBackend struct {
chain *core.BlockChain
pending bool // pending block available
}
func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
if number > testHead {
return nil, nil
}
if number == rpc.EarliestBlockNumber {
number = 0
}
if number == rpc.FinalizedBlockNumber {
return b.chain.CurrentFinalBlock(), nil
}
if number == rpc.SafeBlockNumber {
return b.chain.CurrentSafeBlock(), nil
}
if number == rpc.LatestBlockNumber {
number = testHead
}
if number == rpc.PendingBlockNumber {
if b.pending {
number = testHead + 1
} else {
return nil, nil
}
}
return b.chain.GetHeaderByNumber(uint64(number)), nil
}
func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
if number > testHead {
return nil, nil
}
if number == rpc.EarliestBlockNumber {
number = 0
}
if number == rpc.FinalizedBlockNumber {
number = rpc.BlockNumber(b.chain.CurrentFinalBlock().Number.Uint64())
}
if number == rpc.SafeBlockNumber {
number = rpc.BlockNumber(b.chain.CurrentSafeBlock().Number.Uint64())
}
if number == rpc.LatestBlockNumber {
number = testHead
}
if number == rpc.PendingBlockNumber {
if b.pending {
number = testHead + 1
} else {
return nil, nil
}
}
return b.chain.GetBlockByNumber(uint64(number)), nil
}
func (b *testBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
return b.chain.GetReceiptsByHash(hash), nil
}
func (b *testBackend) Pending() (*types.Block, types.Receipts, *state.StateDB) {
if b.pending {
block := b.chain.GetBlockByNumber(testHead + 1)
state, _ := b.chain.StateAt(block.Root())
return block, b.chain.GetReceiptsByHash(block.Hash()), state
}
return nil, nil, nil
}
func (b *testBackend) ChainConfig() *params.ChainConfig {
return b.chain.Config()
}
func (b *testBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
return nil
}
func (b *testBackend) teardown() {
b.chain.Stop()
}
// newTestBackend creates a test backend. OBS: don't forget to invoke tearDown
// after use, otherwise the blockchain instance will mem-leak via goroutines.
func newTestBackend(t *testing.T, londonBlock *big.Int, cancunBlock *big.Int, pending bool) *testBackend {
if londonBlock != nil && cancunBlock != nil && londonBlock.Cmp(cancunBlock) == 1 {
panic("cannot define test backend with cancun before london")
}
var (
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
addr = crypto.PubkeyToAddress(key.PublicKey)
config = *params.TestChainConfig // needs copy because it is modified below
gspec = &core.Genesis{
Config: &config,
Alloc: types.GenesisAlloc{addr: {Balance: big.NewInt(math.MaxInt64)}},
}
signer = types.LatestSigner(gspec.Config)
// Compute empty blob hash.
emptyBlob = kzg4844.Blob{}
emptyBlobCommit, _ = kzg4844.BlobToCommitment(&emptyBlob)
emptyBlobVHash = kzg4844.CalcBlobHashV1(sha256.New(), &emptyBlobCommit)
)
config.LondonBlock = londonBlock
config.ArrowGlacierBlock = londonBlock
config.GrayGlacierBlock = londonBlock
var engine consensus.Engine = beacon.New(ethash.NewFaker())
td := params.GenesisDifficulty.Uint64()
if cancunBlock != nil {
ts := gspec.Timestamp + cancunBlock.Uint64()*10 // fixed 10 sec block time in blockgen
config.ShanghaiTime = &ts
config.CancunTime = &ts
signer = types.LatestSigner(gspec.Config)
}
// Generate testing blocks
db, blocks, _ := core.GenerateChainWithGenesis(gspec, engine, testHead+1, func(i int, b *core.BlockGen) {
b.SetCoinbase(common.Address{1})
var txdata types.TxData
if londonBlock != nil && b.Number().Cmp(londonBlock) >= 0 {
txdata = &types.DynamicFeeTx{
ChainID: gspec.Config.ChainID,
Nonce: b.TxNonce(addr),
To: &common.Address{},
Gas: 30000,
GasFeeCap: big.NewInt(100 * params.GWei),
GasTipCap: big.NewInt(int64(i+1) * params.GWei),
Data: []byte{},
}
} else {
txdata = &types.LegacyTx{
Nonce: b.TxNonce(addr),
To: &common.Address{},
Gas: 21000,
GasPrice: big.NewInt(int64(i+1) * params.GWei),
Value: big.NewInt(100),
Data: []byte{},
}
}
b.AddTx(types.MustSignNewTx(key, signer, txdata))
if cancunBlock != nil && b.Number().Cmp(cancunBlock) >= 0 {
b.SetPoS()
// put more blobs in each new block
for j := 0; j < i && j < 6; j++ {
blobTx := &types.BlobTx{
ChainID: uint256.MustFromBig(gspec.Config.ChainID),
Nonce: b.TxNonce(addr),
To: common.Address{},
Gas: 30000,
GasFeeCap: uint256.NewInt(100 * params.GWei),
GasTipCap: uint256.NewInt(uint64(i+1) * params.GWei),
Data: []byte{},
BlobFeeCap: uint256.NewInt(1),
BlobHashes: []common.Hash{emptyBlobVHash},
Value: uint256.NewInt(100),
Sidecar: nil,
}
b.AddTx(types.MustSignNewTx(key, signer, blobTx))
}
}
td += b.Difficulty().Uint64()
})
// Construct testing chain
gspec.Config.TerminalTotalDifficulty = new(big.Int).SetUint64(td)
chain, err := core.NewBlockChain(db, &core.CacheConfig{TrieCleanNoPrefetch: true}, gspec, nil, engine, vm.Config{}, nil, nil)
if err != nil {
t.Fatalf("Failed to create local chain, %v", err)
}
if i, err := chain.InsertChain(blocks); err != nil {
panic(fmt.Errorf("error inserting block %d: %w", i, err))
}
chain.SetFinalized(chain.GetBlockByNumber(25).Header())
chain.SetSafe(chain.GetBlockByNumber(25).Header())
return &testBackend{chain: chain, pending: pending}
}
func (b *testBackend) CurrentHeader() *types.Header {
return b.chain.CurrentHeader()
}
func (b *testBackend) GetBlockByNumber(number uint64) *types.Block {
return b.chain.GetBlockByNumber(number)
}
func TestSuggestTipCap(t *testing.T) {
config := Config{
Blocks: 3,
Percentile: 60,
}
var cases = []struct {
fork *big.Int // London fork number
expect *big.Int // Expected gasprice suggestion
}{
{nil, big.NewInt(params.GWei * int64(30))},
{big.NewInt(0), big.NewInt(params.GWei * int64(30))}, // Fork point in genesis
{big.NewInt(1), big.NewInt(params.GWei * int64(30))}, // Fork point in first block
{big.NewInt(32), big.NewInt(params.GWei * int64(30))}, // Fork point in last block
{big.NewInt(33), big.NewInt(params.GWei * int64(30))}, // Fork point in the future
}
for _, c := range cases {
backend := newTestBackend(t, c.fork, nil, false)
oracle := NewOracle(backend, config, big.NewInt(params.GWei))
// The gas price sampled is: 32G, 31G, 30G, 29G, 28G, 27G
got, err := oracle.SuggestTipCap(context.Background())
backend.teardown()
if err != nil {
t.Fatalf("Failed to retrieve recommended gas price: %v", err)
}
if got.Cmp(c.expect) != 0 {
t.Fatalf("Gas price mismatch, want %d, got %d", c.expect, got)
}
}
}