640 lines
19 KiB
Go
640 lines
19 KiB
Go
// Copyright 2021 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package tracers
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import (
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"bytes"
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"context"
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"crypto/ecdsa"
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"encoding/json"
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"errors"
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"fmt"
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"math/big"
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"reflect"
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"sort"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/consensus"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/internal/ethapi"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rpc"
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)
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var (
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errStateNotFound = errors.New("state not found")
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errBlockNotFound = errors.New("block not found")
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errTransactionNotFound = errors.New("transaction not found")
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)
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type testBackend struct {
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chainConfig *params.ChainConfig
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engine consensus.Engine
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chaindb ethdb.Database
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chain *core.BlockChain
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}
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func newTestBackend(t *testing.T, n int, gspec *core.Genesis, generator func(i int, b *core.BlockGen)) *testBackend {
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backend := &testBackend{
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chainConfig: params.TestChainConfig,
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engine: ethash.NewFaker(),
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chaindb: rawdb.NewMemoryDatabase(),
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}
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// Generate blocks for testing
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gspec.Config = backend.chainConfig
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var (
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gendb = rawdb.NewMemoryDatabase()
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genesis = gspec.MustCommit(gendb)
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)
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blocks, _ := core.GenerateChain(backend.chainConfig, genesis, backend.engine, gendb, n, generator)
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// Import the canonical chain
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gspec.MustCommit(backend.chaindb)
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cacheConfig := &core.CacheConfig{
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TrieCleanLimit: 256,
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TrieDirtyLimit: 256,
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TrieTimeLimit: 5 * time.Minute,
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SnapshotLimit: 0,
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TrieDirtyDisabled: true, // Archive mode
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}
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chain, err := core.NewBlockChain(backend.chaindb, cacheConfig, backend.chainConfig, backend.engine, vm.Config{}, nil, nil)
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if err != nil {
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t.Fatalf("failed to create tester chain: %v", err)
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}
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if n, err := chain.InsertChain(blocks); err != nil {
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t.Fatalf("block %d: failed to insert into chain: %v", n, err)
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}
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backend.chain = chain
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return backend
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}
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func (b *testBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
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return b.chain.GetHeaderByHash(hash), nil
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}
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func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
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if number == rpc.PendingBlockNumber || number == rpc.LatestBlockNumber {
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return b.chain.CurrentHeader(), nil
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}
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return b.chain.GetHeaderByNumber(uint64(number)), nil
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}
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func (b *testBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
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return b.chain.GetBlockByHash(hash), nil
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}
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func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
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if number == rpc.PendingBlockNumber || number == rpc.LatestBlockNumber {
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return b.chain.CurrentBlock(), nil
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}
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return b.chain.GetBlockByNumber(uint64(number)), nil
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}
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func (b *testBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) {
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tx, hash, blockNumber, index := rawdb.ReadTransaction(b.chaindb, txHash)
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if tx == nil {
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return nil, common.Hash{}, 0, 0, errTransactionNotFound
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}
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return tx, hash, blockNumber, index, nil
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}
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func (b *testBackend) RPCGasCap() uint64 {
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return 25000000
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}
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func (b *testBackend) ChainConfig() *params.ChainConfig {
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return b.chainConfig
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}
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func (b *testBackend) Engine() consensus.Engine {
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return b.engine
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}
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func (b *testBackend) ChainDb() ethdb.Database {
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return b.chaindb
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}
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func (b *testBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (*state.StateDB, error) {
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statedb, err := b.chain.StateAt(block.Root())
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if err != nil {
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return nil, errStateNotFound
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}
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return statedb, nil
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}
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func (b *testBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) {
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parent := b.chain.GetBlock(block.ParentHash(), block.NumberU64()-1)
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if parent == nil {
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return nil, vm.BlockContext{}, nil, errBlockNotFound
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}
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statedb, err := b.chain.StateAt(parent.Root())
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if err != nil {
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return nil, vm.BlockContext{}, nil, errStateNotFound
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}
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if txIndex == 0 && len(block.Transactions()) == 0 {
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return nil, vm.BlockContext{}, statedb, nil
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}
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// Recompute transactions up to the target index.
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signer := types.MakeSigner(b.chainConfig, block.Number())
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for idx, tx := range block.Transactions() {
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msg, _ := tx.AsMessage(signer)
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txContext := core.NewEVMTxContext(msg)
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context := core.NewEVMBlockContext(block.Header(), b.chain, nil)
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if idx == txIndex {
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return msg, context, statedb, nil
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}
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vmenv := vm.NewEVM(context, txContext, statedb, b.chainConfig, vm.Config{})
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if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil {
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return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err)
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}
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statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number()))
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}
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return nil, vm.BlockContext{}, nil, fmt.Errorf("transaction index %d out of range for block %#x", txIndex, block.Hash())
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}
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func TestTraceCall(t *testing.T) {
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t.Parallel()
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// Initialize test accounts
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accounts := newAccounts(3)
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genesis := &core.Genesis{Alloc: core.GenesisAlloc{
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accounts[0].addr: {Balance: big.NewInt(params.Ether)},
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accounts[1].addr: {Balance: big.NewInt(params.Ether)},
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accounts[2].addr: {Balance: big.NewInt(params.Ether)},
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}}
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genBlocks := 10
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signer := types.HomesteadSigner{}
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api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) {
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// Transfer from account[0] to account[1]
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// value: 1000 wei
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// fee: 0 wei
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tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key)
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b.AddTx(tx)
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}))
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var testSuite = []struct {
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blockNumber rpc.BlockNumber
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call ethapi.CallArgs
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config *TraceCallConfig
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expectErr error
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expect interface{}
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}{
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// Standard JSON trace upon the genesis, plain transfer.
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{
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blockNumber: rpc.BlockNumber(0),
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call: ethapi.CallArgs{
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From: &accounts[0].addr,
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To: &accounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: nil,
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expectErr: nil,
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expect: ðapi.ExecutionResult{
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Gas: params.TxGas,
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Failed: false,
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ReturnValue: "",
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StructLogs: []ethapi.StructLogRes{},
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},
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},
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// Standard JSON trace upon the head, plain transfer.
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{
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blockNumber: rpc.BlockNumber(genBlocks),
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call: ethapi.CallArgs{
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From: &accounts[0].addr,
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To: &accounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: nil,
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expectErr: nil,
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expect: ðapi.ExecutionResult{
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Gas: params.TxGas,
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Failed: false,
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ReturnValue: "",
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StructLogs: []ethapi.StructLogRes{},
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},
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},
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// Standard JSON trace upon the non-existent block, error expects
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{
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blockNumber: rpc.BlockNumber(genBlocks + 1),
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call: ethapi.CallArgs{
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From: &accounts[0].addr,
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To: &accounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: nil,
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expectErr: fmt.Errorf("block #%d not found", genBlocks+1),
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expect: nil,
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},
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// Standard JSON trace upon the latest block
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{
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blockNumber: rpc.LatestBlockNumber,
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call: ethapi.CallArgs{
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From: &accounts[0].addr,
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To: &accounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: nil,
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expectErr: nil,
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expect: ðapi.ExecutionResult{
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Gas: params.TxGas,
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Failed: false,
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ReturnValue: "",
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StructLogs: []ethapi.StructLogRes{},
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},
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},
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// Standard JSON trace upon the pending block
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{
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blockNumber: rpc.PendingBlockNumber,
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call: ethapi.CallArgs{
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From: &accounts[0].addr,
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To: &accounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: nil,
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expectErr: nil,
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expect: ðapi.ExecutionResult{
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Gas: params.TxGas,
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Failed: false,
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ReturnValue: "",
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StructLogs: []ethapi.StructLogRes{},
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},
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},
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}
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for _, testspec := range testSuite {
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result, err := api.TraceCall(context.Background(), testspec.call, rpc.BlockNumberOrHash{BlockNumber: &testspec.blockNumber}, testspec.config)
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if testspec.expectErr != nil {
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if err == nil {
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t.Errorf("Expect error %v, get nothing", testspec.expectErr)
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continue
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}
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if !reflect.DeepEqual(err, testspec.expectErr) {
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t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err)
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}
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} else {
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if err != nil {
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t.Errorf("Expect no error, get %v", err)
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continue
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}
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if !reflect.DeepEqual(result, testspec.expect) {
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t.Errorf("Result mismatch, want %v, get %v", testspec.expect, result)
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}
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}
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}
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}
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func TestOverridenTraceCall(t *testing.T) {
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t.Parallel()
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// Initialize test accounts
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accounts := newAccounts(3)
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genesis := &core.Genesis{Alloc: core.GenesisAlloc{
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accounts[0].addr: {Balance: big.NewInt(params.Ether)},
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accounts[1].addr: {Balance: big.NewInt(params.Ether)},
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accounts[2].addr: {Balance: big.NewInt(params.Ether)},
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}}
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genBlocks := 10
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signer := types.HomesteadSigner{}
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api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) {
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// Transfer from account[0] to account[1]
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// value: 1000 wei
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// fee: 0 wei
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tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key)
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b.AddTx(tx)
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}))
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randomAccounts, tracer := newAccounts(3), "callTracer"
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var testSuite = []struct {
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blockNumber rpc.BlockNumber
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call ethapi.CallArgs
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config *TraceCallConfig
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expectErr error
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expect *callTrace
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}{
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// Succcessful call with state overriding
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{
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blockNumber: rpc.PendingBlockNumber,
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call: ethapi.CallArgs{
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From: &randomAccounts[0].addr,
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To: &randomAccounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: &TraceCallConfig{
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Tracer: &tracer,
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StateOverrides: ðapi.StateOverride{
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randomAccounts[0].addr: ethapi.OverrideAccount{Balance: newRPCBalance(new(big.Int).Mul(big.NewInt(1), big.NewInt(params.Ether)))},
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},
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},
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expectErr: nil,
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expect: &callTrace{
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Type: "CALL",
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From: randomAccounts[0].addr,
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To: randomAccounts[1].addr,
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Gas: newRPCUint64(24979000),
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GasUsed: newRPCUint64(0),
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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},
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// Invalid call without state overriding
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{
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blockNumber: rpc.PendingBlockNumber,
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call: ethapi.CallArgs{
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From: &randomAccounts[0].addr,
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To: &randomAccounts[1].addr,
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Value: (*hexutil.Big)(big.NewInt(1000)),
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},
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config: &TraceCallConfig{
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Tracer: &tracer,
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},
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expectErr: core.ErrInsufficientFundsForTransfer,
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expect: nil,
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},
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// Successful simple contract call
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//
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// // SPDX-License-Identifier: GPL-3.0
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//
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// pragma solidity >=0.7.0 <0.8.0;
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//
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// /**
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// * @title Storage
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// * @dev Store & retrieve value in a variable
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// */
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// contract Storage {
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// uint256 public number;
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// constructor() {
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// number = block.number;
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// }
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// }
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{
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blockNumber: rpc.PendingBlockNumber,
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call: ethapi.CallArgs{
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From: &randomAccounts[0].addr,
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To: &randomAccounts[2].addr,
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Data: newRPCBytes(common.Hex2Bytes("8381f58a")), // call number()
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},
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config: &TraceCallConfig{
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Tracer: &tracer,
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StateOverrides: ðapi.StateOverride{
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randomAccounts[2].addr: ethapi.OverrideAccount{
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Code: newRPCBytes(common.Hex2Bytes("6080604052348015600f57600080fd5b506004361060285760003560e01c80638381f58a14602d575b600080fd5b60336049565b6040518082815260200191505060405180910390f35b6000548156fea2646970667358221220eab35ffa6ab2adfe380772a48b8ba78e82a1b820a18fcb6f59aa4efb20a5f60064736f6c63430007040033")),
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StateDiff: newStates([]common.Hash{{}}, []common.Hash{common.BigToHash(big.NewInt(123))}),
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},
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},
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},
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expectErr: nil,
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expect: &callTrace{
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Type: "CALL",
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From: randomAccounts[0].addr,
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To: randomAccounts[2].addr,
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Input: hexutil.Bytes(common.Hex2Bytes("8381f58a")),
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Output: hexutil.Bytes(common.BigToHash(big.NewInt(123)).Bytes()),
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Gas: newRPCUint64(24978936),
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GasUsed: newRPCUint64(2283),
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Value: (*hexutil.Big)(big.NewInt(0)),
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},
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},
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}
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for _, testspec := range testSuite {
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result, err := api.TraceCall(context.Background(), testspec.call, rpc.BlockNumberOrHash{BlockNumber: &testspec.blockNumber}, testspec.config)
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if testspec.expectErr != nil {
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if err == nil {
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t.Errorf("Expect error %v, get nothing", testspec.expectErr)
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continue
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}
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if !errors.Is(err, testspec.expectErr) {
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t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err)
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}
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} else {
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if err != nil {
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t.Errorf("Expect no error, get %v", err)
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continue
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}
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ret := new(callTrace)
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if err := json.Unmarshal(result.(json.RawMessage), ret); err != nil {
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t.Fatalf("failed to unmarshal trace result: %v", err)
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}
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if !jsonEqual(ret, testspec.expect) {
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// uncomment this for easier debugging
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//have, _ := json.MarshalIndent(ret, "", " ")
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//want, _ := json.MarshalIndent(testspec.expect, "", " ")
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//t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want))
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t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, testspec.expect)
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}
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}
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}
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}
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func TestTraceTransaction(t *testing.T) {
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t.Parallel()
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// Initialize test accounts
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accounts := newAccounts(2)
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genesis := &core.Genesis{Alloc: core.GenesisAlloc{
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accounts[0].addr: {Balance: big.NewInt(params.Ether)},
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accounts[1].addr: {Balance: big.NewInt(params.Ether)},
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}}
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target := common.Hash{}
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signer := types.HomesteadSigner{}
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api := NewAPI(newTestBackend(t, 1, genesis, func(i int, b *core.BlockGen) {
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// Transfer from account[0] to account[1]
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// value: 1000 wei
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// fee: 0 wei
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tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key)
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b.AddTx(tx)
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target = tx.Hash()
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}))
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result, err := api.TraceTransaction(context.Background(), target, nil)
|
|
if err != nil {
|
|
t.Errorf("Failed to trace transaction %v", err)
|
|
}
|
|
if !reflect.DeepEqual(result, ðapi.ExecutionResult{
|
|
Gas: params.TxGas,
|
|
Failed: false,
|
|
ReturnValue: "",
|
|
StructLogs: []ethapi.StructLogRes{},
|
|
}) {
|
|
t.Error("Transaction tracing result is different")
|
|
}
|
|
}
|
|
|
|
func TestTraceBlock(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Initialize test accounts
|
|
accounts := newAccounts(3)
|
|
genesis := &core.Genesis{Alloc: core.GenesisAlloc{
|
|
accounts[0].addr: {Balance: big.NewInt(params.Ether)},
|
|
accounts[1].addr: {Balance: big.NewInt(params.Ether)},
|
|
accounts[2].addr: {Balance: big.NewInt(params.Ether)},
|
|
}}
|
|
genBlocks := 10
|
|
signer := types.HomesteadSigner{}
|
|
api := NewAPI(newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) {
|
|
// Transfer from account[0] to account[1]
|
|
// value: 1000 wei
|
|
// fee: 0 wei
|
|
tx, _ := types.SignTx(types.NewTransaction(uint64(i), accounts[1].addr, big.NewInt(1000), params.TxGas, big.NewInt(0), nil), signer, accounts[0].key)
|
|
b.AddTx(tx)
|
|
}))
|
|
|
|
var testSuite = []struct {
|
|
blockNumber rpc.BlockNumber
|
|
config *TraceConfig
|
|
expect interface{}
|
|
expectErr error
|
|
}{
|
|
// Trace genesis block, expect error
|
|
{
|
|
blockNumber: rpc.BlockNumber(0),
|
|
config: nil,
|
|
expect: nil,
|
|
expectErr: errors.New("genesis is not traceable"),
|
|
},
|
|
// Trace head block
|
|
{
|
|
blockNumber: rpc.BlockNumber(genBlocks),
|
|
config: nil,
|
|
expectErr: nil,
|
|
expect: []*txTraceResult{
|
|
{
|
|
Result: ðapi.ExecutionResult{
|
|
Gas: params.TxGas,
|
|
Failed: false,
|
|
ReturnValue: "",
|
|
StructLogs: []ethapi.StructLogRes{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// Trace non-existent block
|
|
{
|
|
blockNumber: rpc.BlockNumber(genBlocks + 1),
|
|
config: nil,
|
|
expectErr: fmt.Errorf("block #%d not found", genBlocks+1),
|
|
expect: nil,
|
|
},
|
|
// Trace latest block
|
|
{
|
|
blockNumber: rpc.LatestBlockNumber,
|
|
config: nil,
|
|
expectErr: nil,
|
|
expect: []*txTraceResult{
|
|
{
|
|
Result: ðapi.ExecutionResult{
|
|
Gas: params.TxGas,
|
|
Failed: false,
|
|
ReturnValue: "",
|
|
StructLogs: []ethapi.StructLogRes{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// Trace pending block
|
|
{
|
|
blockNumber: rpc.PendingBlockNumber,
|
|
config: nil,
|
|
expectErr: nil,
|
|
expect: []*txTraceResult{
|
|
{
|
|
Result: ðapi.ExecutionResult{
|
|
Gas: params.TxGas,
|
|
Failed: false,
|
|
ReturnValue: "",
|
|
StructLogs: []ethapi.StructLogRes{},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, testspec := range testSuite {
|
|
result, err := api.TraceBlockByNumber(context.Background(), testspec.blockNumber, testspec.config)
|
|
if testspec.expectErr != nil {
|
|
if err == nil {
|
|
t.Errorf("Expect error %v, get nothing", testspec.expectErr)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(err, testspec.expectErr) {
|
|
t.Errorf("Error mismatch, want %v, get %v", testspec.expectErr, err)
|
|
}
|
|
} else {
|
|
if err != nil {
|
|
t.Errorf("Expect no error, get %v", err)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(result, testspec.expect) {
|
|
t.Errorf("Result mismatch, want %v, get %v", testspec.expect, result)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type Account struct {
|
|
key *ecdsa.PrivateKey
|
|
addr common.Address
|
|
}
|
|
|
|
type Accounts []Account
|
|
|
|
func (a Accounts) Len() int { return len(a) }
|
|
func (a Accounts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
|
func (a Accounts) Less(i, j int) bool { return bytes.Compare(a[i].addr.Bytes(), a[j].addr.Bytes()) < 0 }
|
|
|
|
func newAccounts(n int) (accounts Accounts) {
|
|
for i := 0; i < n; i++ {
|
|
key, _ := crypto.GenerateKey()
|
|
addr := crypto.PubkeyToAddress(key.PublicKey)
|
|
accounts = append(accounts, Account{key: key, addr: addr})
|
|
}
|
|
sort.Sort(accounts)
|
|
return accounts
|
|
}
|
|
|
|
func newRPCBalance(balance *big.Int) **hexutil.Big {
|
|
rpcBalance := (*hexutil.Big)(balance)
|
|
return &rpcBalance
|
|
}
|
|
|
|
func newRPCUint64(number uint64) *hexutil.Uint64 {
|
|
rpcUint64 := hexutil.Uint64(number)
|
|
return &rpcUint64
|
|
}
|
|
|
|
func newRPCBytes(bytes []byte) *hexutil.Bytes {
|
|
rpcBytes := hexutil.Bytes(bytes)
|
|
return &rpcBytes
|
|
}
|
|
|
|
func newStates(keys []common.Hash, vals []common.Hash) *map[common.Hash]common.Hash {
|
|
if len(keys) != len(vals) {
|
|
panic("invalid input")
|
|
}
|
|
m := make(map[common.Hash]common.Hash)
|
|
for i := 0; i < len(keys); i++ {
|
|
m[keys[i]] = vals[i]
|
|
}
|
|
return &m
|
|
}
|