github.com/SmartMeshFoundation/Spectrum@v0.0.0-20220621030607-452a266fee1e/core/state/state_test.go (about)

     1  // Copyright 2014 The Spectrum Authors
     2  // This file is part of the Spectrum library.
     3  //
     4  // The Spectrum 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 Spectrum 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 Spectrum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package state
    18  
    19  import (
    20  	"bytes"
    21  	"math/big"
    22  	"testing"
    23  
    24  	"github.com/SmartMeshFoundation/Spectrum/common"
    25  	"github.com/SmartMeshFoundation/Spectrum/crypto"
    26  	"github.com/SmartMeshFoundation/Spectrum/ethdb"
    27  	checker "gopkg.in/check.v1"
    28  )
    29  
    30  type StateSuite struct {
    31  	db    *ethdb.MemDatabase
    32  	state *StateDB
    33  }
    34  
    35  var _ = checker.Suite(&StateSuite{})
    36  
    37  var toAddr = common.BytesToAddress
    38  
    39  func (s *StateSuite) TestDump(c *checker.C) {
    40  	// generate a few entries
    41  	obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
    42  	obj1.AddBalance(big.NewInt(22))
    43  	obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
    44  	obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
    45  	obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
    46  	obj3.SetBalance(big.NewInt(44))
    47  
    48  	// write some of them to the trie
    49  	s.state.updateStateObject(obj1)
    50  	s.state.updateStateObject(obj2)
    51  	s.state.CommitTo(s.db, false)
    52  
    53  	// check that dump contains the state objects that are in trie
    54  	got := string(s.state.Dump())
    55  	want := `{
    56      "root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
    57      "accounts": {
    58          "0000000000000000000000000000000000000001": {
    59              "balance": "22",
    60              "nonce": 0,
    61              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    62              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    63              "code": "",
    64              "storage": {}
    65          },
    66          "0000000000000000000000000000000000000002": {
    67              "balance": "44",
    68              "nonce": 0,
    69              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    70              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    71              "code": "",
    72              "storage": {}
    73          },
    74          "0000000000000000000000000000000000000102": {
    75              "balance": "0",
    76              "nonce": 0,
    77              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    78              "codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
    79              "code": "03030303030303",
    80              "storage": {}
    81          }
    82      }
    83  }`
    84  	if got != want {
    85  		c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
    86  	}
    87  }
    88  
    89  func (s *StateSuite) SetUpTest(c *checker.C) {
    90  	s.db, _ = ethdb.NewMemDatabase()
    91  	s.state, _ = New(common.Hash{}, NewDatabase(s.db))
    92  }
    93  
    94  func (s *StateSuite) TestNull(c *checker.C) {
    95  	address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
    96  	s.state.CreateAccount(address)
    97  	//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
    98  	var value common.Hash
    99  	s.state.SetState(address, common.Hash{}, value)
   100  	s.state.CommitTo(s.db, false)
   101  	value = s.state.GetState(address, common.Hash{})
   102  	if !common.EmptyHash(value) {
   103  		c.Errorf("expected empty hash. got %x", value)
   104  	}
   105  }
   106  
   107  func (s *StateSuite) TestSnapshot(c *checker.C) {
   108  	stateobjaddr := toAddr([]byte("aa"))
   109  	var storageaddr common.Hash
   110  	data1 := common.BytesToHash([]byte{42})
   111  	data2 := common.BytesToHash([]byte{43})
   112  
   113  	// set initial state object value
   114  	s.state.SetState(stateobjaddr, storageaddr, data1)
   115  	// get snapshot of current state
   116  	snapshot := s.state.Snapshot()
   117  
   118  	// set new state object value
   119  	s.state.SetState(stateobjaddr, storageaddr, data2)
   120  	// restore snapshot
   121  	s.state.RevertToSnapshot(snapshot)
   122  
   123  	// get state storage value
   124  	res := s.state.GetState(stateobjaddr, storageaddr)
   125  
   126  	c.Assert(data1, checker.DeepEquals, res)
   127  }
   128  
   129  func (s *StateSuite) TestSnapshotEmpty(c *checker.C) {
   130  	s.state.RevertToSnapshot(s.state.Snapshot())
   131  }
   132  
   133  // use testing instead of checker because checker does not support
   134  // printing/logging in tests (-check.vv does not work)
   135  func TestSnapshot2(t *testing.T) {
   136  	db, _ := ethdb.NewMemDatabase()
   137  	state, _ := New(common.Hash{}, NewDatabase(db))
   138  
   139  	stateobjaddr0 := toAddr([]byte("so0"))
   140  	stateobjaddr1 := toAddr([]byte("so1"))
   141  	var storageaddr common.Hash
   142  
   143  	data0 := common.BytesToHash([]byte{17})
   144  	data1 := common.BytesToHash([]byte{18})
   145  
   146  	state.SetState(stateobjaddr0, storageaddr, data0)
   147  	state.SetState(stateobjaddr1, storageaddr, data1)
   148  
   149  	// db, trie are already non-empty values
   150  	so0 := state.getStateObject(stateobjaddr0)
   151  	so0.SetBalance(big.NewInt(42))
   152  	so0.SetNonce(43)
   153  	so0.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e'}), []byte{'c', 'a', 'f', 'e'})
   154  	so0.suicided = false
   155  	so0.deleted = false
   156  	state.setStateObject(so0)
   157  
   158  	root, _ := state.CommitTo(db, false)
   159  	state.Reset(root)
   160  
   161  	// and one with deleted == true
   162  	so1 := state.getStateObject(stateobjaddr1)
   163  	so1.SetBalance(big.NewInt(52))
   164  	so1.SetNonce(53)
   165  	so1.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e', '2'}), []byte{'c', 'a', 'f', 'e', '2'})
   166  	so1.suicided = true
   167  	so1.deleted = true
   168  	state.setStateObject(so1)
   169  
   170  	so1 = state.getStateObject(stateobjaddr1)
   171  	if so1 != nil {
   172  		t.Fatalf("deleted object not nil when getting")
   173  	}
   174  
   175  	snapshot := state.Snapshot()
   176  	state.RevertToSnapshot(snapshot)
   177  
   178  	so0Restored := state.getStateObject(stateobjaddr0)
   179  	// Update lazily-loaded values before comparing.
   180  	so0Restored.GetState(state.db, storageaddr)
   181  	so0Restored.Code(state.db)
   182  	// non-deleted is equal (restored)
   183  	compareStateObjects(so0Restored, so0, t)
   184  
   185  	// deleted should be nil, both before and after restore of state copy
   186  	so1Restored := state.getStateObject(stateobjaddr1)
   187  	if so1Restored != nil {
   188  		t.Fatalf("deleted object not nil after restoring snapshot: %+v", so1Restored)
   189  	}
   190  }
   191  
   192  func compareStateObjects(so0, so1 *stateObject, t *testing.T) {
   193  	if so0.Address() != so1.Address() {
   194  		t.Fatalf("Address mismatch: have %v, want %v", so0.address, so1.address)
   195  	}
   196  	if so0.Balance().Cmp(so1.Balance()) != 0 {
   197  		t.Fatalf("Balance mismatch: have %v, want %v", so0.Balance(), so1.Balance())
   198  	}
   199  	if so0.Nonce() != so1.Nonce() {
   200  		t.Fatalf("Nonce mismatch: have %v, want %v", so0.Nonce(), so1.Nonce())
   201  	}
   202  	if so0.data.Root != so1.data.Root {
   203  		t.Errorf("Root mismatch: have %x, want %x", so0.data.Root[:], so1.data.Root[:])
   204  	}
   205  	if !bytes.Equal(so0.CodeHash(), so1.CodeHash()) {
   206  		t.Fatalf("CodeHash mismatch: have %v, want %v", so0.CodeHash(), so1.CodeHash())
   207  	}
   208  	if !bytes.Equal(so0.code, so1.code) {
   209  		t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
   210  	}
   211  
   212  	if len(so1.cachedStorage) != len(so0.cachedStorage) {
   213  		t.Errorf("Storage size mismatch: have %d, want %d", len(so1.cachedStorage), len(so0.cachedStorage))
   214  	}
   215  	for k, v := range so1.cachedStorage {
   216  		if so0.cachedStorage[k] != v {
   217  			t.Errorf("Storage key %x mismatch: have %v, want %v", k, so0.cachedStorage[k], v)
   218  		}
   219  	}
   220  	for k, v := range so0.cachedStorage {
   221  		if so1.cachedStorage[k] != v {
   222  			t.Errorf("Storage key %x mismatch: have %v, want none.", k, v)
   223  		}
   224  	}
   225  
   226  	if so0.suicided != so1.suicided {
   227  		t.Fatalf("suicided mismatch: have %v, want %v", so0.suicided, so1.suicided)
   228  	}
   229  	if so0.deleted != so1.deleted {
   230  		t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
   231  	}
   232  }