github.1485827954.workers.dev/ethereum/go-ethereum@v1.14.3/core/state/state_test.go (about)

     1  // Copyright 2014 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package state
    18  
    19  import (
    20  	"bytes"
    21  	"encoding/json"
    22  	"testing"
    23  
    24  	"github.com/ethereum/go-ethereum/common"
    25  	"github.com/ethereum/go-ethereum/core/rawdb"
    26  	"github.com/ethereum/go-ethereum/core/tracing"
    27  	"github.com/ethereum/go-ethereum/core/types"
    28  	"github.com/ethereum/go-ethereum/crypto"
    29  	"github.com/ethereum/go-ethereum/ethdb"
    30  	"github.com/ethereum/go-ethereum/triedb"
    31  	"github.com/holiman/uint256"
    32  )
    33  
    34  type stateEnv struct {
    35  	db    ethdb.Database
    36  	state *StateDB
    37  }
    38  
    39  func newStateEnv() *stateEnv {
    40  	db := rawdb.NewMemoryDatabase()
    41  	sdb, _ := New(types.EmptyRootHash, NewDatabase(db), nil)
    42  	return &stateEnv{db: db, state: sdb}
    43  }
    44  
    45  func TestDump(t *testing.T) {
    46  	db := rawdb.NewMemoryDatabase()
    47  	tdb := NewDatabaseWithConfig(db, &triedb.Config{Preimages: true})
    48  	sdb, _ := New(types.EmptyRootHash, tdb, nil)
    49  	s := &stateEnv{db: db, state: sdb}
    50  
    51  	// generate a few entries
    52  	obj1 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x01}))
    53  	obj1.AddBalance(uint256.NewInt(22), tracing.BalanceChangeUnspecified)
    54  	obj2 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x01, 0x02}))
    55  	obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
    56  	obj3 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x02}))
    57  	obj3.SetBalance(uint256.NewInt(44), tracing.BalanceChangeUnspecified)
    58  
    59  	// write some of them to the trie
    60  	s.state.updateStateObject(obj1)
    61  	s.state.updateStateObject(obj2)
    62  	root, _ := s.state.Commit(0, false)
    63  
    64  	// check that DumpToCollector contains the state objects that are in trie
    65  	s.state, _ = New(root, tdb, nil)
    66  	got := string(s.state.Dump(nil))
    67  	want := `{
    68      "root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
    69      "accounts": {
    70          "0x0000000000000000000000000000000000000001": {
    71              "balance": "22",
    72              "nonce": 0,
    73              "root": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    74              "codeHash": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    75              "address": "0x0000000000000000000000000000000000000001",
    76              "key": "0x1468288056310c82aa4c01a7e12a10f8111a0560e72b700555479031b86c357d"
    77          },
    78          "0x0000000000000000000000000000000000000002": {
    79              "balance": "44",
    80              "nonce": 0,
    81              "root": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    82              "codeHash": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    83              "address": "0x0000000000000000000000000000000000000002",
    84              "key": "0xd52688a8f926c816ca1e079067caba944f158e764817b83fc43594370ca9cf62"
    85          },
    86          "0x0000000000000000000000000000000000000102": {
    87              "balance": "0",
    88              "nonce": 0,
    89              "root": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    90              "codeHash": "0x87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
    91              "code": "0x03030303030303",
    92              "address": "0x0000000000000000000000000000000000000102",
    93              "key": "0xa17eacbc25cda025e81db9c5c62868822c73ce097cee2a63e33a2e41268358a1"
    94          }
    95      }
    96  }`
    97  	if got != want {
    98  		t.Errorf("DumpToCollector mismatch:\ngot: %s\nwant: %s\n", got, want)
    99  	}
   100  }
   101  
   102  func TestIterativeDump(t *testing.T) {
   103  	db := rawdb.NewMemoryDatabase()
   104  	tdb := NewDatabaseWithConfig(db, &triedb.Config{Preimages: true})
   105  	sdb, _ := New(types.EmptyRootHash, tdb, nil)
   106  	s := &stateEnv{db: db, state: sdb}
   107  
   108  	// generate a few entries
   109  	obj1 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x01}))
   110  	obj1.AddBalance(uint256.NewInt(22), tracing.BalanceChangeUnspecified)
   111  	obj2 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x01, 0x02}))
   112  	obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
   113  	obj3 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x02}))
   114  	obj3.SetBalance(uint256.NewInt(44), tracing.BalanceChangeUnspecified)
   115  	obj4 := s.state.getOrNewStateObject(common.BytesToAddress([]byte{0x00}))
   116  	obj4.AddBalance(uint256.NewInt(1337), tracing.BalanceChangeUnspecified)
   117  
   118  	// write some of them to the trie
   119  	s.state.updateStateObject(obj1)
   120  	s.state.updateStateObject(obj2)
   121  	root, _ := s.state.Commit(0, false)
   122  	s.state, _ = New(root, tdb, nil)
   123  
   124  	b := &bytes.Buffer{}
   125  	s.state.IterativeDump(nil, json.NewEncoder(b))
   126  	// check that DumpToCollector contains the state objects that are in trie
   127  	got := b.String()
   128  	want := `{"root":"0xd5710ea8166b7b04bc2bfb129d7db12931cee82f75ca8e2d075b4884322bf3de"}
   129  {"balance":"22","nonce":0,"root":"0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421","codeHash":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470","address":"0x0000000000000000000000000000000000000001","key":"0x1468288056310c82aa4c01a7e12a10f8111a0560e72b700555479031b86c357d"}
   130  {"balance":"1337","nonce":0,"root":"0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421","codeHash":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470","address":"0x0000000000000000000000000000000000000000","key":"0x5380c7b7ae81a58eb98d9c78de4a1fd7fd9535fc953ed2be602daaa41767312a"}
   131  {"balance":"0","nonce":0,"root":"0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421","codeHash":"0x87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3","code":"0x03030303030303","address":"0x0000000000000000000000000000000000000102","key":"0xa17eacbc25cda025e81db9c5c62868822c73ce097cee2a63e33a2e41268358a1"}
   132  {"balance":"44","nonce":0,"root":"0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421","codeHash":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470","address":"0x0000000000000000000000000000000000000002","key":"0xd52688a8f926c816ca1e079067caba944f158e764817b83fc43594370ca9cf62"}
   133  `
   134  	if got != want {
   135  		t.Errorf("DumpToCollector mismatch:\ngot: %s\nwant: %s\n", got, want)
   136  	}
   137  }
   138  
   139  func TestNull(t *testing.T) {
   140  	s := newStateEnv()
   141  	address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
   142  	s.state.CreateAccount(address)
   143  	//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
   144  	var value common.Hash
   145  
   146  	s.state.SetState(address, common.Hash{}, value)
   147  	s.state.Commit(0, false)
   148  
   149  	if value := s.state.GetState(address, common.Hash{}); value != (common.Hash{}) {
   150  		t.Errorf("expected empty current value, got %x", value)
   151  	}
   152  	if value := s.state.GetCommittedState(address, common.Hash{}); value != (common.Hash{}) {
   153  		t.Errorf("expected empty committed value, got %x", value)
   154  	}
   155  }
   156  
   157  func TestSnapshot(t *testing.T) {
   158  	stateobjaddr := common.BytesToAddress([]byte("aa"))
   159  	var storageaddr common.Hash
   160  	data1 := common.BytesToHash([]byte{42})
   161  	data2 := common.BytesToHash([]byte{43})
   162  	s := newStateEnv()
   163  
   164  	// snapshot the genesis state
   165  	genesis := s.state.Snapshot()
   166  
   167  	// set initial state object value
   168  	s.state.SetState(stateobjaddr, storageaddr, data1)
   169  	snapshot := s.state.Snapshot()
   170  
   171  	// set a new state object value, revert it and ensure correct content
   172  	s.state.SetState(stateobjaddr, storageaddr, data2)
   173  	s.state.RevertToSnapshot(snapshot)
   174  
   175  	if v := s.state.GetState(stateobjaddr, storageaddr); v != data1 {
   176  		t.Errorf("wrong storage value %v, want %v", v, data1)
   177  	}
   178  	if v := s.state.GetCommittedState(stateobjaddr, storageaddr); v != (common.Hash{}) {
   179  		t.Errorf("wrong committed storage value %v, want %v", v, common.Hash{})
   180  	}
   181  
   182  	// revert up to the genesis state and ensure correct content
   183  	s.state.RevertToSnapshot(genesis)
   184  	if v := s.state.GetState(stateobjaddr, storageaddr); v != (common.Hash{}) {
   185  		t.Errorf("wrong storage value %v, want %v", v, common.Hash{})
   186  	}
   187  	if v := s.state.GetCommittedState(stateobjaddr, storageaddr); v != (common.Hash{}) {
   188  		t.Errorf("wrong committed storage value %v, want %v", v, common.Hash{})
   189  	}
   190  }
   191  
   192  func TestSnapshotEmpty(t *testing.T) {
   193  	s := newStateEnv()
   194  	s.state.RevertToSnapshot(s.state.Snapshot())
   195  }
   196  
   197  func TestCreateObjectRevert(t *testing.T) {
   198  	state, _ := New(types.EmptyRootHash, NewDatabase(rawdb.NewMemoryDatabase()), nil)
   199  	addr := common.BytesToAddress([]byte("so0"))
   200  	snap := state.Snapshot()
   201  
   202  	state.CreateAccount(addr)
   203  	so0 := state.getStateObject(addr)
   204  	so0.SetBalance(uint256.NewInt(42), tracing.BalanceChangeUnspecified)
   205  	so0.SetNonce(43)
   206  	so0.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e'}), []byte{'c', 'a', 'f', 'e'})
   207  	state.setStateObject(so0)
   208  
   209  	state.RevertToSnapshot(snap)
   210  	if state.Exist(addr) {
   211  		t.Error("Unexpected account after revert")
   212  	}
   213  }