forked from cerc-io/plugeth
311 lines
11 KiB
Go
311 lines
11 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 tracetest
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import (
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"encoding/json"
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"math/big"
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"os"
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"path/filepath"
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"strings"
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"testing"
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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/common/math"
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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/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/eth/tracers"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/tests"
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)
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type callContext struct {
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Number math.HexOrDecimal64 `json:"number"`
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Difficulty *math.HexOrDecimal256 `json:"difficulty"`
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Time math.HexOrDecimal64 `json:"timestamp"`
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GasLimit math.HexOrDecimal64 `json:"gasLimit"`
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Miner common.Address `json:"miner"`
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}
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// callTrace is the result of a callTracer run.
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type callTrace struct {
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Type string `json:"type"`
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From common.Address `json:"from"`
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To common.Address `json:"to"`
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Input hexutil.Bytes `json:"input"`
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Output hexutil.Bytes `json:"output"`
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Gas *hexutil.Uint64 `json:"gas,omitempty"`
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GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
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Value *hexutil.Big `json:"value,omitempty"`
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Error string `json:"error,omitempty"`
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Revertal string `json:"revertReason,omitempty"`
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Calls []callTrace `json:"calls,omitempty"`
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}
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// callTracerTest defines a single test to check the call tracer against.
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type callTracerTest struct {
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Genesis *core.Genesis `json:"genesis"`
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Context *callContext `json:"context"`
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Input string `json:"input"`
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TracerConfig json.RawMessage `json:"tracerConfig"`
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Result *callTrace `json:"result"`
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}
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// Iterates over all the input-output datasets in the tracer test harness and
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// runs the JavaScript tracers against them.
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func TestCallTracerLegacy(t *testing.T) {
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testCallTracer("callTracerLegacy", "call_tracer_legacy", t)
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}
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func TestCallTracerNative(t *testing.T) {
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testCallTracer("callTracer", "call_tracer", t)
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}
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func testCallTracer(tracerName string, dirPath string, t *testing.T) {
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files, err := os.ReadDir(filepath.Join("testdata", dirPath))
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if err != nil {
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t.Fatalf("failed to retrieve tracer test suite: %v", err)
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}
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for _, file := range files {
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if !strings.HasSuffix(file.Name(), ".json") {
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continue
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}
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file := file // capture range variable
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t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
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t.Parallel()
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var (
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test = new(callTracerTest)
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tx = new(types.Transaction)
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)
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// Call tracer test found, read if from disk
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if blob, err := os.ReadFile(filepath.Join("testdata", dirPath, file.Name())); err != nil {
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t.Fatalf("failed to read testcase: %v", err)
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} else if err := json.Unmarshal(blob, test); err != nil {
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t.Fatalf("failed to parse testcase: %v", err)
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}
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if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
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t.Fatalf("failed to parse testcase input: %v", err)
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}
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// Configure a blockchain with the given prestate
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var (
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signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
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origin, _ = signer.Sender(tx)
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txContext = vm.TxContext{
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Origin: origin,
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GasPrice: tx.GasPrice(),
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}
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context = vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: test.Context.Miner,
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BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
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Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
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Difficulty: (*big.Int)(test.Context.Difficulty),
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GasLimit: uint64(test.Context.GasLimit),
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}
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_, statedb = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
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)
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tracer, err := tracers.New(tracerName, new(tracers.Context), test.TracerConfig)
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if err != nil {
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t.Fatalf("failed to create call tracer: %v", err)
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}
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evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
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msg, err := tx.AsMessage(signer, nil)
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if err != nil {
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t.Fatalf("failed to prepare transaction for tracing: %v", err)
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}
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st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
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if _, err = st.TransitionDb(); err != nil {
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t.Fatalf("failed to execute transaction: %v", err)
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}
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// Retrieve the trace result and compare against the expected.
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res, err := tracer.GetResult()
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if err != nil {
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t.Fatalf("failed to retrieve trace result: %v", err)
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}
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ret := new(callTrace)
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if err := json.Unmarshal(res, 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, test.Result, new(callTrace), new(callTrace)) {
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// uncomment this for easier debugging
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//have, _ := json.MarshalIndent(ret, "", " ")
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//want, _ := json.MarshalIndent(test.Result, "", " ")
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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, test.Result)
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}
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})
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}
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}
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func BenchmarkTracers(b *testing.B) {
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files, err := os.ReadDir(filepath.Join("testdata", "call_tracer"))
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if err != nil {
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b.Fatalf("failed to retrieve tracer test suite: %v", err)
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}
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for _, file := range files {
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if !strings.HasSuffix(file.Name(), ".json") {
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continue
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}
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file := file // capture range variable
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b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) {
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blob, err := os.ReadFile(filepath.Join("testdata", "call_tracer", file.Name()))
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if err != nil {
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b.Fatalf("failed to read testcase: %v", err)
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}
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test := new(callTracerTest)
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if err := json.Unmarshal(blob, test); err != nil {
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b.Fatalf("failed to parse testcase: %v", err)
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}
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benchTracer("callTracer", test, b)
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})
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}
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}
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func benchTracer(tracerName string, test *callTracerTest, b *testing.B) {
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// Configure a blockchain with the given prestate
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tx := new(types.Transaction)
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if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
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b.Fatalf("failed to parse testcase input: %v", err)
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}
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signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
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msg, err := tx.AsMessage(signer, nil)
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if err != nil {
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b.Fatalf("failed to prepare transaction for tracing: %v", err)
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}
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origin, _ := signer.Sender(tx)
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txContext := vm.TxContext{
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Origin: origin,
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GasPrice: tx.GasPrice(),
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}
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context := vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: test.Context.Miner,
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BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
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Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
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Difficulty: (*big.Int)(test.Context.Difficulty),
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GasLimit: uint64(test.Context.GasLimit),
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}
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_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
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b.ReportAllocs()
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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tracer, err := tracers.New(tracerName, new(tracers.Context), nil)
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if err != nil {
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b.Fatalf("failed to create call tracer: %v", err)
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}
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evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
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snap := statedb.Snapshot()
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st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
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if _, err = st.TransitionDb(); err != nil {
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b.Fatalf("failed to execute transaction: %v", err)
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}
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if _, err = tracer.GetResult(); err != nil {
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b.Fatal(err)
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}
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statedb.RevertToSnapshot(snap)
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}
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}
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// TestZeroValueToNotExitCall tests the calltracer(s) on the following:
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// Tx to A, A calls B with zero value. B does not already exist.
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// Expected: that enter/exit is invoked and the inner call is shown in the result
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func TestZeroValueToNotExitCall(t *testing.T) {
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var to = common.HexToAddress("0x00000000000000000000000000000000deadbeef")
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privkey, err := crypto.HexToECDSA("0000000000000000deadbeef00000000000000000000000000000000deadbeef")
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if err != nil {
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t.Fatalf("err %v", err)
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}
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signer := types.NewEIP155Signer(big.NewInt(1))
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tx, err := types.SignNewTx(privkey, signer, &types.LegacyTx{
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GasPrice: big.NewInt(0),
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Gas: 50000,
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To: &to,
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})
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if err != nil {
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t.Fatalf("err %v", err)
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}
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origin, _ := signer.Sender(tx)
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txContext := vm.TxContext{
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Origin: origin,
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GasPrice: big.NewInt(1),
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}
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context := vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: common.Address{},
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BlockNumber: new(big.Int).SetUint64(8000000),
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Time: new(big.Int).SetUint64(5),
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Difficulty: big.NewInt(0x30000),
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GasLimit: uint64(6000000),
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}
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var code = []byte{
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byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), // in and outs zero
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byte(vm.DUP1), byte(vm.PUSH1), 0xff, byte(vm.GAS), // value=0,address=0xff, gas=GAS
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byte(vm.CALL),
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}
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var alloc = core.GenesisAlloc{
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to: core.GenesisAccount{
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Nonce: 1,
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Code: code,
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},
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origin: core.GenesisAccount{
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Nonce: 0,
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Balance: big.NewInt(500000000000000),
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},
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}
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_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false)
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// Create the tracer, the EVM environment and run it
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tracer, err := tracers.New("callTracer", nil, nil)
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if err != nil {
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t.Fatalf("failed to create call tracer: %v", err)
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}
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evm := vm.NewEVM(context, txContext, statedb, params.MainnetChainConfig, vm.Config{Debug: true, Tracer: tracer})
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msg, err := tx.AsMessage(signer, nil)
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if err != nil {
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t.Fatalf("failed to prepare transaction for tracing: %v", err)
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}
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st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
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if _, err = st.TransitionDb(); err != nil {
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t.Fatalf("failed to execute transaction: %v", err)
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}
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// Retrieve the trace result and compare against the etalon
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res, err := tracer.GetResult()
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if err != nil {
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t.Fatalf("failed to retrieve trace result: %v", err)
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}
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have := new(callTrace)
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if err := json.Unmarshal(res, have); err != nil {
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t.Fatalf("failed to unmarshal trace result: %v", err)
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}
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wantStr := `{"type":"CALL","from":"0x682a80a6f560eec50d54e63cbeda1c324c5f8d1b","to":"0x00000000000000000000000000000000deadbeef","value":"0x0","gas":"0x7148","gasUsed":"0x2d0","input":"0x","output":"0x","calls":[{"type":"CALL","from":"0x00000000000000000000000000000000deadbeef","to":"0x00000000000000000000000000000000000000ff","value":"0x0","gas":"0x6cbf","gasUsed":"0x0","input":"0x","output":"0x"}]}`
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want := new(callTrace)
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json.Unmarshal([]byte(wantStr), want)
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if !jsonEqual(have, want, new(callTrace), new(callTrace)) {
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t.Error("have != want")
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}
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}
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