github.com/sberex/go-sberex@v1.8.2-0.20181113200658-ed96ac38f7d7/core/state/state_test.go (about)

     1  // This file is part of the go-sberex library. The go-sberex library is 
     2  // free software: you can redistribute it and/or modify it under the terms 
     3  // of the GNU Lesser General Public License as published by the Free 
     4  // Software Foundation, either version 3 of the License, or (at your option)
     5  // any later version.
     6  //
     7  // The go-sberex library is distributed in the hope that it will be useful, 
     8  // but WITHOUT ANY WARRANTY; without even the implied warranty of
     9  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 
    10  // General Public License <http://www.gnu.org/licenses/> for more details.
    11  
    12  package state
    13  
    14  import (
    15  	"bytes"
    16  	"math/big"
    17  	"testing"
    18  
    19  	"github.com/Sberex/go-sberex/common"
    20  	"github.com/Sberex/go-sberex/crypto"
    21  	"github.com/Sberex/go-sberex/ethdb"
    22  	checker "gopkg.in/check.v1"
    23  )
    24  
    25  type StateSuite struct {
    26  	db    *ethdb.MemDatabase
    27  	state *StateDB
    28  }
    29  
    30  var _ = checker.Suite(&StateSuite{})
    31  
    32  var toAddr = common.BytesToAddress
    33  
    34  func (s *StateSuite) TestDump(c *checker.C) {
    35  	// generate a few entries
    36  	obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
    37  	obj1.AddBalance(big.NewInt(22))
    38  	obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
    39  	obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
    40  	obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
    41  	obj3.SetBalance(big.NewInt(44))
    42  
    43  	// write some of them to the trie
    44  	s.state.updateStateObject(obj1)
    45  	s.state.updateStateObject(obj2)
    46  	s.state.Commit(false)
    47  
    48  	// check that dump contains the state objects that are in trie
    49  	got := string(s.state.Dump())
    50  	want := `{
    51      "root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
    52      "accounts": {
    53          "0000000000000000000000000000000000000001": {
    54              "balance": "22",
    55              "nonce": 0,
    56              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    57              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    58              "code": "",
    59              "storage": {}
    60          },
    61          "0000000000000000000000000000000000000002": {
    62              "balance": "44",
    63              "nonce": 0,
    64              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    65              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    66              "code": "",
    67              "storage": {}
    68          },
    69          "0000000000000000000000000000000000000102": {
    70              "balance": "0",
    71              "nonce": 0,
    72              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    73              "codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
    74              "code": "03030303030303",
    75              "storage": {}
    76          }
    77      }
    78  }`
    79  	if got != want {
    80  		c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
    81  	}
    82  }
    83  
    84  func (s *StateSuite) SetUpTest(c *checker.C) {
    85  	s.db, _ = ethdb.NewMemDatabase()
    86  	s.state, _ = New(common.Hash{}, NewDatabase(s.db))
    87  }
    88  
    89  func (s *StateSuite) TestNull(c *checker.C) {
    90  	address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
    91  	s.state.CreateAccount(address)
    92  	//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
    93  	var value common.Hash
    94  	s.state.SetState(address, common.Hash{}, value)
    95  	s.state.Commit(false)
    96  	value = s.state.GetState(address, common.Hash{})
    97  	if !common.EmptyHash(value) {
    98  		c.Errorf("expected empty hash. got %x", value)
    99  	}
   100  }
   101  
   102  func (s *StateSuite) TestSnapshot(c *checker.C) {
   103  	stateobjaddr := toAddr([]byte("aa"))
   104  	var storageaddr common.Hash
   105  	data1 := common.BytesToHash([]byte{42})
   106  	data2 := common.BytesToHash([]byte{43})
   107  
   108  	// set initial state object value
   109  	s.state.SetState(stateobjaddr, storageaddr, data1)
   110  	// get snapshot of current state
   111  	snapshot := s.state.Snapshot()
   112  
   113  	// set new state object value
   114  	s.state.SetState(stateobjaddr, storageaddr, data2)
   115  	// restore snapshot
   116  	s.state.RevertToSnapshot(snapshot)
   117  
   118  	// get state storage value
   119  	res := s.state.GetState(stateobjaddr, storageaddr)
   120  
   121  	c.Assert(data1, checker.DeepEquals, res)
   122  }
   123  
   124  func (s *StateSuite) TestSnapshotEmpty(c *checker.C) {
   125  	s.state.RevertToSnapshot(s.state.Snapshot())
   126  }
   127  
   128  // use testing instead of checker because checker does not support
   129  // printing/logging in tests (-check.vv does not work)
   130  func TestSnapshot2(t *testing.T) {
   131  	db, _ := ethdb.NewMemDatabase()
   132  	state, _ := New(common.Hash{}, NewDatabase(db))
   133  
   134  	stateobjaddr0 := toAddr([]byte("so0"))
   135  	stateobjaddr1 := toAddr([]byte("so1"))
   136  	var storageaddr common.Hash
   137  
   138  	data0 := common.BytesToHash([]byte{17})
   139  	data1 := common.BytesToHash([]byte{18})
   140  
   141  	state.SetState(stateobjaddr0, storageaddr, data0)
   142  	state.SetState(stateobjaddr1, storageaddr, data1)
   143  
   144  	// db, trie are already non-empty values
   145  	so0 := state.getStateObject(stateobjaddr0)
   146  	so0.SetBalance(big.NewInt(42))
   147  	so0.SetNonce(43)
   148  	so0.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e'}), []byte{'c', 'a', 'f', 'e'})
   149  	so0.suicided = false
   150  	so0.deleted = false
   151  	state.setStateObject(so0)
   152  
   153  	root, _ := state.Commit(false)
   154  	state.Reset(root)
   155  
   156  	// and one with deleted == true
   157  	so1 := state.getStateObject(stateobjaddr1)
   158  	so1.SetBalance(big.NewInt(52))
   159  	so1.SetNonce(53)
   160  	so1.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e', '2'}), []byte{'c', 'a', 'f', 'e', '2'})
   161  	so1.suicided = true
   162  	so1.deleted = true
   163  	state.setStateObject(so1)
   164  
   165  	so1 = state.getStateObject(stateobjaddr1)
   166  	if so1 != nil {
   167  		t.Fatalf("deleted object not nil when getting")
   168  	}
   169  
   170  	snapshot := state.Snapshot()
   171  	state.RevertToSnapshot(snapshot)
   172  
   173  	so0Restored := state.getStateObject(stateobjaddr0)
   174  	// Update lazily-loaded values before comparing.
   175  	so0Restored.GetState(state.db, storageaddr)
   176  	so0Restored.Code(state.db)
   177  	// non-deleted is equal (restored)
   178  	compareStateObjects(so0Restored, so0, t)
   179  
   180  	// deleted should be nil, both before and after restore of state copy
   181  	so1Restored := state.getStateObject(stateobjaddr1)
   182  	if so1Restored != nil {
   183  		t.Fatalf("deleted object not nil after restoring snapshot: %+v", so1Restored)
   184  	}
   185  }
   186  
   187  func compareStateObjects(so0, so1 *stateObject, t *testing.T) {
   188  	if so0.Address() != so1.Address() {
   189  		t.Fatalf("Address mismatch: have %v, want %v", so0.address, so1.address)
   190  	}
   191  	if so0.Balance().Cmp(so1.Balance()) != 0 {
   192  		t.Fatalf("Balance mismatch: have %v, want %v", so0.Balance(), so1.Balance())
   193  	}
   194  	if so0.Nonce() != so1.Nonce() {
   195  		t.Fatalf("Nonce mismatch: have %v, want %v", so0.Nonce(), so1.Nonce())
   196  	}
   197  	if so0.data.Root != so1.data.Root {
   198  		t.Errorf("Root mismatch: have %x, want %x", so0.data.Root[:], so1.data.Root[:])
   199  	}
   200  	if !bytes.Equal(so0.CodeHash(), so1.CodeHash()) {
   201  		t.Fatalf("CodeHash mismatch: have %v, want %v", so0.CodeHash(), so1.CodeHash())
   202  	}
   203  	if !bytes.Equal(so0.code, so1.code) {
   204  		t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
   205  	}
   206  
   207  	if len(so1.cachedStorage) != len(so0.cachedStorage) {
   208  		t.Errorf("Storage size mismatch: have %d, want %d", len(so1.cachedStorage), len(so0.cachedStorage))
   209  	}
   210  	for k, v := range so1.cachedStorage {
   211  		if so0.cachedStorage[k] != v {
   212  			t.Errorf("Storage key %x mismatch: have %v, want %v", k, so0.cachedStorage[k], v)
   213  		}
   214  	}
   215  	for k, v := range so0.cachedStorage {
   216  		if so1.cachedStorage[k] != v {
   217  			t.Errorf("Storage key %x mismatch: have %v, want none.", k, v)
   218  		}
   219  	}
   220  
   221  	if so0.suicided != so1.suicided {
   222  		t.Fatalf("suicided mismatch: have %v, want %v", so0.suicided, so1.suicided)
   223  	}
   224  	if so0.deleted != so1.deleted {
   225  		t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
   226  	}
   227  }