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eth/tracers: move tracecall tests to subpackage

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This commit is contained in:
Martin Holst Swende
2021-10-28 11:47:53 +02:00
parent 5db19c5922
commit 360e3ba352
3 changed files with 242 additions and 197 deletions
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242
eth/tracers/testing/calltrace_test.go Normal file
View File

@ -0,0 +1,242 @@
package testing
import (
"encoding/json"
"io/ioutil"
"math/big"
"path/filepath"
"reflect"
"strings"
"testing"
"unicode"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/eth/tracers"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/tests"
// Force-load the native, to trigger registration
_ "github.com/ethereum/go-ethereum/eth/tracers/native"
)
type callContext struct {
Number math.HexOrDecimal64 `json:"number"`
Difficulty *math.HexOrDecimal256 `json:"difficulty"`
Time math.HexOrDecimal64 `json:"timestamp"`
GasLimit math.HexOrDecimal64 `json:"gasLimit"`
Miner common.Address `json:"miner"`
}
// callTrace is the result of a callTracer run.
type callTrace struct {
Type string `json:"type"`
From common.Address `json:"from"`
To common.Address `json:"to"`
Input hexutil.Bytes `json:"input"`
Output hexutil.Bytes `json:"output"`
Gas *hexutil.Uint64 `json:"gas,omitempty"`
GasUsed *hexutil.Uint64 `json:"gasUsed,omitempty"`
Value *hexutil.Big `json:"value,omitempty"`
Error string `json:"error,omitempty"`
Calls []callTrace `json:"calls,omitempty"`
}
// callTracerTest defines a single test to check the call tracer against.
type callTracerTest struct {
Genesis *core.Genesis `json:"genesis"`
Context *callContext `json:"context"`
Input string `json:"input"`
Result *callTrace `json:"result"`
}
// Iterates over all the input-output datasets in the tracer test harness and
// runs the JavaScript tracers against them.
func TestCallTracerLegacy(t *testing.T) {
testCallTracer("callTracerLegacy", "call_tracer_legacy", t)
}
func TestCallTracer(t *testing.T) {
testCallTracer("callTracer", "call_tracer", t)
}
func TestCallTracerNative(t *testing.T) {
testCallTracer("callTracerNative", "call_tracer", t)
}
func testCallTracer(tracerName string, dirPath string, t *testing.T) {
files, err := ioutil.ReadDir(filepath.Join("..", "testdata", dirPath))
if err != nil {
t.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
t.Parallel()
var (
test = new(callTracerTest)
tx = new(types.Transaction)
)
// Call tracer test found, read if from disk
if blob, err := ioutil.ReadFile(filepath.Join("..", "testdata", dirPath, file.Name())); err != nil {
t.Fatalf("failed to read testcase: %v", err)
} else if err := json.Unmarshal(blob, test); err != nil {
t.Fatalf("failed to parse testcase: %v", err)
}
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
t.Fatalf("failed to parse testcase input: %v", err)
}
// Configure a blockchain with the given prestate
var (
signer = types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
origin, _ = signer.Sender(tx)
txContext = vm.TxContext{origin, tx.GasPrice()}
context = vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: test.Context.Miner,
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
Difficulty: (*big.Int)(test.Context.Difficulty),
GasLimit: uint64(test.Context.GasLimit),
}
_, statedb = tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
)
tracer, err := tracers.New(tracerName, new(tracers.Context))
if err != nil {
t.Fatalf("failed to create call tracer: %v", err)
}
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
msg, err := tx.AsMessage(signer, nil)
if err != nil {
t.Fatalf("failed to prepare transaction for tracing: %v", err)
}
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
if _, err = st.TransitionDb(); err != nil {
t.Fatalf("failed to execute transaction: %v", err)
}
// Retrieve the trace result and compare against the etalon
res, err := tracer.GetResult()
if err != nil {
t.Fatalf("failed to retrieve trace result: %v", err)
}
ret := new(callTrace)
if err := json.Unmarshal(res, ret); err != nil {
t.Fatalf("failed to unmarshal trace result: %v", err)
}
if !jsonEqual(ret, test.Result) {
// uncomment this for easier debugging
//have, _ := json.MarshalIndent(ret, "", " ")
//want, _ := json.MarshalIndent(test.Result, "", " ")
//t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want))
t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result)
}
})
}
}
// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
// comparison
func jsonEqual(x, y interface{}) bool {
xTrace := new(callTrace)
yTrace := new(callTrace)
if xj, err := json.Marshal(x); err == nil {
json.Unmarshal(xj, xTrace)
} else {
return false
}
if yj, err := json.Marshal(y); err == nil {
json.Unmarshal(yj, yTrace)
} else {
return false
}
return reflect.DeepEqual(xTrace, yTrace)
}
// camel converts a snake cased input string into a camel cased output.
func camel(str string) string {
pieces := strings.Split(str, "_")
for i := 1; i < len(pieces); i++ {
pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:]
}
return strings.Join(pieces, "")
}
func BenchmarkTracers(b *testing.B) {
files, err := ioutil.ReadDir(filepath.Join("..", "testdata", "call_tracer"))
if err != nil {
b.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) {
blob, err := ioutil.ReadFile(filepath.Join("..", "testdata", "call_tracer", file.Name()))
if err != nil {
b.Fatalf("failed to read testcase: %v", err)
}
test := new(callTracerTest)
if err := json.Unmarshal(blob, test); err != nil {
b.Fatalf("failed to parse testcase: %v", err)
}
benchTracer("callTracerNative", test, b)
})
}
}
func benchTracer(tracerName string, test *callTracerTest, b *testing.B) {
// Configure a blockchain with the given prestate
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
b.Fatalf("failed to parse testcase input: %v", err)
}
signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
msg, err := tx.AsMessage(signer, nil)
if err != nil {
b.Fatalf("failed to prepare transaction for tracing: %v", err)
}
origin, _ := signer.Sender(tx)
txContext := vm.TxContext{
Origin: origin,
GasPrice: tx.GasPrice(),
}
context := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: test.Context.Miner,
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
Difficulty: (*big.Int)(test.Context.Difficulty),
GasLimit: uint64(test.Context.GasLimit),
}
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
tracer, err := tracers.New(tracerName, new(tracers.Context))
if err != nil {
b.Fatalf("failed to create call tracer: %v", err)
}
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
snap := statedb.Snapshot()
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
if _, err = st.TransitionDb(); err != nil {
b.Fatalf("failed to execute transaction: %v", err)
}
if _, err = tracer.GetResult(); err != nil {
b.Fatal(err)
}
statedb.RevertToSnapshot(snap)
}
}

2
eth/tracers/tracers.go
View File

@ -19,7 +19,6 @@ package tracers
import (
"encoding/json"
"fmt"
"strings"
"unicode"
@ -60,7 +59,6 @@ func New(code string, ctx *Context) (Tracer, error) {
if fn, ok := nativeTracers[code]; ok {
return fn(), nil
}
panic(fmt.Sprintf("no native tracer %v found", code))
// Resolve js-tracers by name and assemble the tracer object
if tracer, ok := jsTracers[code]; ok {
code = tracer

195
eth/tracers/tracers_test.go
View File

@ -20,11 +20,8 @@ import (
"crypto/ecdsa"
"crypto/rand"
"encoding/json"
"io/ioutil"
"math/big"
"path/filepath"
"reflect"
"strings"
"testing"
"github.com/ethereum/go-ethereum/common"
@ -35,9 +32,7 @@ import (
"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/eth/tracers/native"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/tests"
)
@ -202,119 +197,6 @@ func TestPrestateTracerCreate2(t *testing.T) {
}
}
// Iterates over all the input-output datasets in the tracer test harness and
// runs the JavaScript tracers against them.
func TestCallTracerLegacy(t *testing.T) {
newTracer := func() Tracer {
tracer, err := New("callTracerLegacy", new(Context))
if err != nil {
t.Fatalf("failed to create call tracer: %v", err)
}
return tracer
}
testCallTracer(newTracer, "call_tracer_legacy", t)
}
func TestCallTracer(t *testing.T) {
newTracer := func() Tracer {
tracer, err := New("callTracer", new(Context))
if err != nil {
t.Fatalf("failed to create call tracer: %v", err)
}
return tracer
}
testCallTracer(newTracer, "call_tracer", t)
}
func TestCallTracerNative(t *testing.T) {
newTracer := func() Tracer {
tracer, err := New("callTracerNative", nil /* TODO? */)
if err != nil {
t.Fatalf("failed to create native call tracer: %v", err)
}
return tracer
}
testCallTracer(newTracer, "call_tracer", t)
}
func testCallTracer(newTracer func() Tracer, dirPath string, t *testing.T) {
files, err := ioutil.ReadDir(filepath.Join("testdata", dirPath))
if err != nil {
t.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
t.Parallel()
// Call tracer test found, read if from disk
blob, err := ioutil.ReadFile(filepath.Join("testdata", dirPath, file.Name()))
if err != nil {
t.Fatalf("failed to read testcase: %v", err)
}
test := new(callTracerTest)
if err := json.Unmarshal(blob, test); err != nil {
t.Fatalf("failed to parse testcase: %v", err)
}
// Configure a blockchain with the given prestate
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
t.Fatalf("failed to parse testcase input: %v", err)
}
signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
origin, _ := signer.Sender(tx)
txContext := vm.TxContext{
Origin: origin,
GasPrice: tx.GasPrice(),
}
context := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: test.Context.Miner,
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
Difficulty: (*big.Int)(test.Context.Difficulty),
GasLimit: uint64(test.Context.GasLimit),
}
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
tracer := newTracer()
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
msg, err := tx.AsMessage(signer, nil)
if err != nil {
t.Fatalf("failed to prepare transaction for tracing: %v", err)
}
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
if _, err = st.TransitionDb(); err != nil {
t.Fatalf("failed to execute transaction: %v", err)
}
// Retrieve the trace result and compare against the etalon
res, err := tracer.GetResult()
if err != nil {
t.Fatalf("failed to retrieve trace result: %v", err)
}
ret := new(callTrace)
if err := json.Unmarshal(res, ret); err != nil {
t.Fatalf("failed to unmarshal trace result: %v", err)
}
if !jsonEqual(ret, test.Result) {
// uncomment this for easier debugging
//have, _ := json.MarshalIndent(ret, "", " ")
//want, _ := json.MarshalIndent(test.Result, "", " ")
//t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", string(have), string(want))
t.Fatalf("trace mismatch: \nhave %+v\nwant %+v", ret, test.Result)
}
})
}
}
// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
// comparison
func jsonEqual(x, y interface{}) bool {
@ -410,80 +292,3 @@ func BenchmarkTransactionTrace(b *testing.B) {
tracer.Reset()
}
}
func BenchmarkTracers(b *testing.B) {
files, err := ioutil.ReadDir(filepath.Join("testdata", "call_tracer"))
if err != nil {
b.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) {
blob, err := ioutil.ReadFile(filepath.Join("testdata", "call_tracer", file.Name()))
if err != nil {
b.Fatalf("failed to read testcase: %v", err)
}
test := new(callTracerTest)
if err := json.Unmarshal(blob, test); err != nil {
b.Fatalf("failed to parse testcase: %v", err)
}
newTracer := func() Tracer {
tracer, err := New("callTracer", new(Context))
if err != nil {
b.Fatalf("failed to create call tracer: %v", err)
}
return tracer
}
benchTracer(newTracer, test, b)
})
}
}
func benchTracer(newTracer func() Tracer, test *callTracerTest, b *testing.B) {
// Configure a blockchain with the given prestate
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
b.Fatalf("failed to parse testcase input: %v", err)
}
signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
msg, err := tx.AsMessage(signer, nil)
if err != nil {
b.Fatalf("failed to prepare transaction for tracing: %v", err)
}
origin, _ := signer.Sender(tx)
txContext := vm.TxContext{
Origin: origin,
GasPrice: tx.GasPrice(),
}
context := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: test.Context.Miner,
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
Difficulty: (*big.Int)(test.Context.Difficulty),
GasLimit: uint64(test.Context.GasLimit),
}
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
tracer := newTracer()
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
snap := statedb.Snapshot()
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
if _, err = st.TransitionDb(); err != nil {
b.Fatalf("failed to execute transaction: %v", err)
}
_, err := tracer.GetResult()
if err != nil {
b.Fatal(err)
}
statedb.RevertToSnapshot(snap)
}
}