// Copyright 2021 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 gethclient
import (
"bytes"
"context"
"encoding/json"
"math/big"
"testing"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/eth/ethconfig"
"github.com/ethereum/go-ethereum/eth/filters"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
)
var (
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
testContract = common.HexToAddress("0xbeef")
testEmpty = common.HexToAddress("0xeeee")
testSlot = common.HexToHash("0xdeadbeef")
testValue = crypto.Keccak256Hash(testSlot[:])
testBalance = big.NewInt(2e15)
)
func newTestBackend(t *testing.T) (*node.Node, []*types.Block) {
// Generate test chain.
genesis, blocks := generateTestChain()
// Create node
n, err := node.New(&node.Config{})
if err != nil {
t.Fatalf("can't create new node: %v", err)
}
// Create Ethereum Service
config := ðconfig.Config{Genesis: genesis}
ethservice, err := eth.New(n, config)
if err != nil {
t.Fatalf("can't create new ethereum service: %v", err)
}
filterSystem := filters.NewFilterSystem(ethservice.APIBackend, filters.Config{})
n.RegisterAPIs([]rpc.API{{
Namespace: "eth",
Service: filters.NewFilterAPI(filterSystem),
}})
// Import the test chain.
if err := n.Start(); err != nil {
t.Fatalf("can't start test node: %v", err)
}
if _, err := ethservice.BlockChain().InsertChain(blocks[1:]); err != nil {
t.Fatalf("can't import test blocks: %v", err)
}
return n, blocks
}
func generateTestChain() (*core.Genesis, []*types.Block) {
genesis := &core.Genesis{
Config: params.AllEthashProtocolChanges,
Alloc: types.GenesisAlloc{
testAddr: {Balance: testBalance, Storage: map[common.Hash]common.Hash{testSlot: testValue}},
testContract: {Nonce: 1, Code: []byte{0x13, 0x37}},
testEmpty: {Balance: big.NewInt(1)},
},
ExtraData: []byte("test genesis"),
Timestamp: 9000,
}
generate := func(i int, g *core.BlockGen) {
g.OffsetTime(5)
g.SetExtra([]byte("test"))
}
_, blocks, _ := core.GenerateChainWithGenesis(genesis, ethash.NewFaker(), 1, generate)
blocks = append([]*types.Block{genesis.ToBlock()}, blocks...)
return genesis, blocks
}
func TestGethClient(t *testing.T) {
backend, _ := newTestBackend(t)
client := backend.Attach()
defer backend.Close()
defer client.Close()
tests := []struct {
name string
test func(t *testing.T)
}{
{
"TestGetProof1",
func(t *testing.T) { testGetProof(t, client, testAddr) },
}, {
"TestGetProof2",
func(t *testing.T) { testGetProof(t, client, testContract) },
}, {
"TestGetProofEmpty",
func(t *testing.T) { testGetProof(t, client, testEmpty) },
}, {
"TestGetProofNonExistent",
func(t *testing.T) { testGetProofNonExistent(t, client) },
}, {
"TestGetProofCanonicalizeKeys",
func(t *testing.T) { testGetProofCanonicalizeKeys(t, client) },
}, {
"TestGCStats",
func(t *testing.T) { testGCStats(t, client) },
}, {
"TestMemStats",
func(t *testing.T) { testMemStats(t, client) },
}, {
"TestGetNodeInfo",
func(t *testing.T) { testGetNodeInfo(t, client) },
}, {
"TestSubscribePendingTxHashes",
func(t *testing.T) { testSubscribePendingTransactions(t, client) },
}, {
"TestSubscribePendingTxs",
func(t *testing.T) { testSubscribeFullPendingTransactions(t, client) },
}, {
"TestCallContract",
func(t *testing.T) { testCallContract(t, client) },
}, {
"TestCallContractWithBlockOverrides",
func(t *testing.T) { testCallContractWithBlockOverrides(t, client) },
},
// The testaccesslist is a bit time-sensitive: the newTestBackend imports
// one block. The `testAccessList` fails if the miner has not yet created a
// new pending-block after the import event.
// Hence: this test should be last, execute the tests serially.
{
"TestAccessList",
func(t *testing.T) { testAccessList(t, client) },
}, {
"TestSetHead",
func(t *testing.T) { testSetHead(t, client) },
},
}
for _, tt := range tests {
t.Run(tt.name, tt.test)
}
}
func testAccessList(t *testing.T, client *rpc.Client) {
ec := New(client)
// Test transfer
msg := ethereum.CallMsg{
From: testAddr,
To: &common.Address{},
Gas: 21000,
GasPrice: big.NewInt(875000000),
Value: big.NewInt(1),
}
al, gas, vmErr, err := ec.CreateAccessList(context.Background(), msg)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if vmErr != "" {
t.Fatalf("unexpected vm error: %v", vmErr)
}
if gas != 21000 {
t.Fatalf("unexpected gas used: %v", gas)
}
if len(*al) != 0 {
t.Fatalf("unexpected length of accesslist: %v", len(*al))
}
// Test reverting transaction
msg = ethereum.CallMsg{
From: testAddr,
To: nil,
Gas: 100000,
GasPrice: big.NewInt(1000000000),
Value: big.NewInt(1),
Data: common.FromHex("0x608060806080608155fd"),
}
al, gas, vmErr, err = ec.CreateAccessList(context.Background(), msg)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if vmErr == "" {
t.Fatalf("wanted vmErr, got none")
}
if gas == 21000 {
t.Fatalf("unexpected gas used: %v", gas)
}
if len(*al) != 1 || al.StorageKeys() != 1 {
t.Fatalf("unexpected length of accesslist: %v", len(*al))
}
// address changes between calls, so we can't test for it.
if (*al)[0].Address == common.HexToAddress("0x0") {
t.Fatalf("unexpected address: %v", (*al)[0].Address)
}
if (*al)[0].StorageKeys[0] != common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000081") {
t.Fatalf("unexpected storage key: %v", (*al)[0].StorageKeys[0])
}
}
func testGetProof(t *testing.T, client *rpc.Client, addr common.Address) {
ec := New(client)
ethcl := ethclient.NewClient(client)
result, err := ec.GetProof(context.Background(), addr, []string{testSlot.String()}, nil)
if err != nil {
t.Fatal(err)
}
if result.Address != addr {
t.Fatalf("unexpected address, have: %v want: %v", result.Address, addr)
}
// test nonce
if nonce, _ := ethcl.NonceAt(context.Background(), addr, nil); result.Nonce != nonce {
t.Fatalf("invalid nonce, want: %v got: %v", nonce, result.Nonce)
}
// test balance
if balance, _ := ethcl.BalanceAt(context.Background(), addr, nil); result.Balance.Cmp(balance) != 0 {
t.Fatalf("invalid balance, want: %v got: %v", balance, result.Balance)
}
// test storage
if len(result.StorageProof) != 1 {
t.Fatalf("invalid storage proof, want 1 proof, got %v proof(s)", len(result.StorageProof))
}
for _, proof := range result.StorageProof {
if proof.Key != testSlot.String() {
t.Fatalf("invalid storage proof key, want: %q, got: %q", testSlot.String(), proof.Key)
}
slotValue, _ := ethcl.StorageAt(context.Background(), addr, common.HexToHash(proof.Key), nil)
if have, want := common.BigToHash(proof.Value), common.BytesToHash(slotValue); have != want {
t.Fatalf("addr %x, invalid storage proof value: have: %v, want: %v", addr, have, want)
}
}
// test code
code, _ := ethcl.CodeAt(context.Background(), addr, nil)
if have, want := result.CodeHash, crypto.Keccak256Hash(code); have != want {
t.Fatalf("codehash wrong, have %v want %v ", have, want)
}
}
func testGetProofCanonicalizeKeys(t *testing.T, client *rpc.Client) {
ec := New(client)
// Tests with non-canon input for storage keys.
// Here we check that the storage key is canonicalized.
result, err := ec.GetProof(context.Background(), testAddr, []string{"0x0dEadbeef"}, nil)
if err != nil {
t.Fatal(err)
}
if result.StorageProof[0].Key != "0xdeadbeef" {
t.Fatalf("wrong storage key encoding in proof: %q", result.StorageProof[0].Key)
}
if result, err = ec.GetProof(context.Background(), testAddr, []string{"0x000deadbeef"}, nil); err != nil {
t.Fatal(err)
}
if result.StorageProof[0].Key != "0xdeadbeef" {
t.Fatalf("wrong storage key encoding in proof: %q", result.StorageProof[0].Key)
}
// If the requested storage key is 32 bytes long, it will be returned as is.
hashSizedKey := "0x00000000000000000000000000000000000000000000000000000000deadbeef"
result, err = ec.GetProof(context.Background(), testAddr, []string{hashSizedKey}, nil)
if err != nil {
t.Fatal(err)
}
if result.StorageProof[0].Key != hashSizedKey {
t.Fatalf("wrong storage key encoding in proof: %q", result.StorageProof[0].Key)
}
}
func testGetProofNonExistent(t *testing.T, client *rpc.Client) {
addr := common.HexToAddress("0x0001")
ec := New(client)
result, err := ec.GetProof(context.Background(), addr, nil, nil)
if err != nil {
t.Fatal(err)
}
if result.Address != addr {
t.Fatalf("unexpected address, have: %v want: %v", result.Address, addr)
}
// test nonce
if result.Nonce != 0 {
t.Fatalf("invalid nonce, want: %v got: %v", 0, result.Nonce)
}
// test balance
if result.Balance.Sign() != 0 {
t.Fatalf("invalid balance, want: %v got: %v", 0, result.Balance)
}
// test storage
if have := len(result.StorageProof); have != 0 {
t.Fatalf("invalid storage proof, want 0 proof, got %v proof(s)", have)
}
// test codeHash
if have, want := result.CodeHash, (common.Hash{}); have != want {
t.Fatalf("codehash wrong, have %v want %v ", have, want)
}
// test codeHash
if have, want := result.StorageHash, (common.Hash{}); have != want {
t.Fatalf("storagehash wrong, have %v want %v ", have, want)
}
}
func testGCStats(t *testing.T, client *rpc.Client) {
ec := New(client)
_, err := ec.GCStats(context.Background())
if err != nil {
t.Fatal(err)
}
}
func testMemStats(t *testing.T, client *rpc.Client) {
ec := New(client)
stats, err := ec.MemStats(context.Background())
if err != nil {
t.Fatal(err)
}
if stats.Alloc == 0 {
t.Fatal("Invalid mem stats retrieved")
}
}
func testGetNodeInfo(t *testing.T, client *rpc.Client) {
ec := New(client)
info, err := ec.GetNodeInfo(context.Background())
if err != nil {
t.Fatal(err)
}
if info.Name == "" {
t.Fatal("Invalid node info retrieved")
}
}
func testSetHead(t *testing.T, client *rpc.Client) {
ec := New(client)
err := ec.SetHead(context.Background(), big.NewInt(0))
if err != nil {
t.Fatal(err)
}
}
func testSubscribePendingTransactions(t *testing.T, client *rpc.Client) {
ec := New(client)
ethcl := ethclient.NewClient(client)
// Subscribe to Transactions
ch := make(chan common.Hash)
ec.SubscribePendingTransactions(context.Background(), ch)
// Send a transaction
chainID, err := ethcl.ChainID(context.Background())
if err != nil {
t.Fatal(err)
}
// Create transaction
tx := types.NewTransaction(0, common.Address{1}, big.NewInt(1), 22000, big.NewInt(1), nil)
signer := types.LatestSignerForChainID(chainID)
signature, err := crypto.Sign(signer.Hash(tx).Bytes(), testKey)
if err != nil {
t.Fatal(err)
}
signedTx, err := tx.WithSignature(signer, signature)
if err != nil {
t.Fatal(err)
}
// Send transaction
err = ethcl.SendTransaction(context.Background(), signedTx)
if err != nil {
t.Fatal(err)
}
// Check that the transaction was sent over the channel
hash := <-ch
if hash != signedTx.Hash() {
t.Fatalf("Invalid tx hash received, got %v, want %v", hash, signedTx.Hash())
}
}
func testSubscribeFullPendingTransactions(t *testing.T, client *rpc.Client) {
ec := New(client)
ethcl := ethclient.NewClient(client)
// Subscribe to Transactions
ch := make(chan *types.Transaction)
ec.SubscribeFullPendingTransactions(context.Background(), ch)
// Send a transaction
chainID, err := ethcl.ChainID(context.Background())
if err != nil {
t.Fatal(err)
}
// Create transaction
tx := types.NewTransaction(1, common.Address{1}, big.NewInt(1), 22000, big.NewInt(1), nil)
signer := types.LatestSignerForChainID(chainID)
signature, err := crypto.Sign(signer.Hash(tx).Bytes(), testKey)
if err != nil {
t.Fatal(err)
}
signedTx, err := tx.WithSignature(signer, signature)
if err != nil {
t.Fatal(err)
}
// Send transaction
err = ethcl.SendTransaction(context.Background(), signedTx)
if err != nil {
t.Fatal(err)
}
// Check that the transaction was sent over the channel
tx = <-ch
if tx.Hash() != signedTx.Hash() {
t.Fatalf("Invalid tx hash received, got %v, want %v", tx.Hash(), signedTx.Hash())
}
}
func testCallContract(t *testing.T, client *rpc.Client) {
ec := New(client)
msg := ethereum.CallMsg{
From: testAddr,
To: &common.Address{},
Gas: 21000,
GasPrice: big.NewInt(1000000000),
Value: big.NewInt(1),
}
// CallContract without override
if _, err := ec.CallContract(context.Background(), msg, big.NewInt(0), nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
// CallContract with override
override := OverrideAccount{
Nonce: 1,
}
mapAcc := make(map[common.Address]OverrideAccount)
mapAcc[testAddr] = override
if _, err := ec.CallContract(context.Background(), msg, big.NewInt(0), &mapAcc); err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func TestOverrideAccountMarshal(t *testing.T) {
om := map[common.Address]OverrideAccount{
{0x11}: {
// Zero-valued nonce is not overridden, but simply dropped by the encoder.
Nonce: 0,
},
{0xaa}: {
Nonce: 5,
},
{0xbb}: {
Code: []byte{1},
},
{0xcc}: {
// 'code', 'balance', 'state' should be set when input is
// a non-nil but empty value.
Code: []byte{},
Balance: big.NewInt(0),
State: map[common.Hash]common.Hash{},
// For 'stateDiff' the behavior is different, empty map
// is ignored because it makes no difference.
StateDiff: map[common.Hash]common.Hash{},
},
}
marshalled, err := json.MarshalIndent(&om, "", " ")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
expected := `{
"0x1100000000000000000000000000000000000000": {},
"0xaa00000000000000000000000000000000000000": {
"nonce": "0x5"
},
"0xbb00000000000000000000000000000000000000": {
"code": "0x01"
},
"0xcc00000000000000000000000000000000000000": {
"code": "0x",
"balance": "0x0",
"state": {}
}
}`
if string(marshalled) != expected {
t.Error("wrong output:", string(marshalled))
t.Error("want:", expected)
}
}
func TestBlockOverridesMarshal(t *testing.T) {
for i, tt := range []struct {
bo BlockOverrides
want string
}{
{
bo: BlockOverrides{},
want: `{}`,
},
{
bo: BlockOverrides{
Coinbase: common.HexToAddress("0x1111111111111111111111111111111111111111"),
},
want: `{"coinbase":"0x1111111111111111111111111111111111111111"}`,
},
{
bo: BlockOverrides{
Number: big.NewInt(1),
Difficulty: big.NewInt(2),
Time: 3,
GasLimit: 4,
BaseFee: big.NewInt(5),
},
want: `{"number":"0x1","difficulty":"0x2","time":"0x3","gasLimit":"0x4","baseFee":"0x5"}`,
},
} {
marshalled, err := json.Marshal(&tt.bo)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if string(marshalled) != tt.want {
t.Errorf("Testcase #%d failed. expected\n%s\ngot\n%s", i, tt.want, string(marshalled))
}
}
}
func testCallContractWithBlockOverrides(t *testing.T, client *rpc.Client) {
ec := New(client)
msg := ethereum.CallMsg{
From: testAddr,
To: &common.Address{},
Gas: 50000,
GasPrice: big.NewInt(1000000000),
Value: big.NewInt(1),
}
override := OverrideAccount{
// Returns coinbase address.
Code: common.FromHex("0x41806000526014600cf3"),
}
mapAcc := make(map[common.Address]OverrideAccount)
mapAcc[common.Address{}] = override
res, err := ec.CallContract(context.Background(), msg, big.NewInt(0), &mapAcc)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !bytes.Equal(res, common.FromHex("0x0000000000000000000000000000000000000000")) {
t.Fatalf("unexpected result: %x", res)
}
// Now test with block overrides
bo := BlockOverrides{
Coinbase: common.HexToAddress("0x1111111111111111111111111111111111111111"),
}
res, err = ec.CallContractWithBlockOverrides(context.Background(), msg, big.NewInt(0), &mapAcc, bo)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !bytes.Equal(res, common.FromHex("0x1111111111111111111111111111111111111111")) {
t.Fatalf("unexpected result: %x", res)
}
}