github.com/arieschain/arieschain@v0.0.0-20191023063405-37c074544356/core/state/state_test.go (about)

     1  package state
     2  
     3  import (
     4  	"bytes"
     5  	"math/big"
     6  	"testing"
     7  
     8  	"github.com/quickchainproject/quickchain/common"
     9  	"github.com/quickchainproject/quickchain/crypto"
    10  	"github.com/quickchainproject/quickchain/qctdb"
    11  	checker "gopkg.in/check.v1"
    12  )
    13  
    14  type StateSuite struct {
    15  	db    *qctdb.MemDatabase
    16  	state *StateDB
    17  }
    18  
    19  var _ = checker.Suite(&StateSuite{})
    20  
    21  var toAddr = common.BytesToAddress
    22  
    23  func (s *StateSuite) TestDump(c *checker.C) {
    24  	// generate a few entries
    25  	obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
    26  	obj1.AddBalance(big.NewInt(22))
    27  	obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
    28  	obj2.SetCode(crypto.Keccak256Hash([]byte{3, 3, 3, 3, 3, 3, 3}), []byte{3, 3, 3, 3, 3, 3, 3})
    29  	obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
    30  	obj3.SetBalance(big.NewInt(44))
    31  
    32  	// write some of them to the trie
    33  	s.state.updateStateObject(obj1)
    34  	s.state.updateStateObject(obj2)
    35  	s.state.Commit(false)
    36  
    37  	// check that dump contains the state objects that are in trie
    38  	got := string(s.state.Dump())
    39  	want := `{
    40      "root": "71edff0130dd2385947095001c73d9e28d862fc286fca2b922ca6f6f3cddfdd2",
    41      "accounts": {
    42          "0000000000000000000000000000000000000001": {
    43              "balance": "22",
    44              "nonce": 0,
    45              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    46              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    47              "code": "",
    48              "storage": {}
    49          },
    50          "0000000000000000000000000000000000000002": {
    51              "balance": "44",
    52              "nonce": 0,
    53              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    54              "codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    55              "code": "",
    56              "storage": {}
    57          },
    58          "0000000000000000000000000000000000000102": {
    59              "balance": "0",
    60              "nonce": 0,
    61              "root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    62              "codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
    63              "code": "03030303030303",
    64              "storage": {}
    65          }
    66      }
    67  }`
    68  	if got != want {
    69  		c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
    70  	}
    71  }
    72  
    73  func (s *StateSuite) SetUpTest(c *checker.C) {
    74  	s.db, _ = qctdb.NewMemDatabase()
    75  	s.state, _ = New(common.Hash{}, NewDatabase(s.db))
    76  }
    77  
    78  func (s *StateSuite) TestNull(c *checker.C) {
    79  	address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
    80  	s.state.CreateAccount(address)
    81  	//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
    82  	var value common.Hash
    83  	s.state.SetState(address, common.Hash{}, value)
    84  	s.state.Commit(false)
    85  	value = s.state.GetState(address, common.Hash{})
    86  	if !common.EmptyHash(value) {
    87  		c.Errorf("expected empty hash. got %x", value)
    88  	}
    89  }
    90  
    91  func (s *StateSuite) TestSnapshot(c *checker.C) {
    92  	stateobjaddr := toAddr([]byte("aa"))
    93  	var storageaddr common.Hash
    94  	data1 := common.BytesToHash([]byte{42})
    95  	data2 := common.BytesToHash([]byte{43})
    96  
    97  	// set initial state object value
    98  	s.state.SetState(stateobjaddr, storageaddr, data1)
    99  	// get snapshot of current state
   100  	snapshot := s.state.Snapshot()
   101  
   102  	// set new state object value
   103  	s.state.SetState(stateobjaddr, storageaddr, data2)
   104  	// restore snapshot
   105  	s.state.RevertToSnapshot(snapshot)
   106  
   107  	// get state storage value
   108  	res := s.state.GetState(stateobjaddr, storageaddr)
   109  
   110  	c.Assert(data1, checker.DeepEquals, res)
   111  }
   112  
   113  func (s *StateSuite) TestSnapshotEmpty(c *checker.C) {
   114  	s.state.RevertToSnapshot(s.state.Snapshot())
   115  }
   116  
   117  // use testing instead of checker because checker does not support
   118  // printing/logging in tests (-check.vv does not work)
   119  func TestSnapshot2(t *testing.T) {
   120  	db, _ := qctdb.NewMemDatabase()
   121  	state, _ := New(common.Hash{}, NewDatabase(db))
   122  
   123  	stateobjaddr0 := toAddr([]byte("so0"))
   124  	stateobjaddr1 := toAddr([]byte("so1"))
   125  	var storageaddr common.Hash
   126  
   127  	data0 := common.BytesToHash([]byte{17})
   128  	data1 := common.BytesToHash([]byte{18})
   129  
   130  	state.SetState(stateobjaddr0, storageaddr, data0)
   131  	state.SetState(stateobjaddr1, storageaddr, data1)
   132  
   133  	// db, trie are already non-empty values
   134  	so0 := state.getStateObject(stateobjaddr0)
   135  	so0.SetBalance(big.NewInt(42))
   136  	so0.SetNonce(43)
   137  	so0.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e'}), []byte{'c', 'a', 'f', 'e'})
   138  	so0.suicided = false
   139  	so0.deleted = false
   140  	state.setStateObject(so0)
   141  
   142  	root, _ := state.Commit(false)
   143  	state.Reset(root)
   144  
   145  	// and one with deleted == true
   146  	so1 := state.getStateObject(stateobjaddr1)
   147  	so1.SetBalance(big.NewInt(52))
   148  	so1.SetNonce(53)
   149  	so1.SetCode(crypto.Keccak256Hash([]byte{'c', 'a', 'f', 'e', '2'}), []byte{'c', 'a', 'f', 'e', '2'})
   150  	so1.suicided = true
   151  	so1.deleted = true
   152  	state.setStateObject(so1)
   153  
   154  	so1 = state.getStateObject(stateobjaddr1)
   155  	if so1 != nil {
   156  		t.Fatalf("deleted object not nil when getting")
   157  	}
   158  
   159  	snapshot := state.Snapshot()
   160  	state.RevertToSnapshot(snapshot)
   161  
   162  	so0Restored := state.getStateObject(stateobjaddr0)
   163  	// Update lazily-loaded values before comparing.
   164  	so0Restored.GetState(state.db, storageaddr)
   165  	so0Restored.Code(state.db)
   166  	// non-deleted is equal (restored)
   167  	compareStateObjects(so0Restored, so0, t)
   168  
   169  	// deleted should be nil, both before and after restore of state copy
   170  	so1Restored := state.getStateObject(stateobjaddr1)
   171  	if so1Restored != nil {
   172  		t.Fatalf("deleted object not nil after restoring snapshot: %+v", so1Restored)
   173  	}
   174  }
   175  
   176  func compareStateObjects(so0, so1 *stateObject, t *testing.T) {
   177  	if so0.Address() != so1.Address() {
   178  		t.Fatalf("Address mismatch: have %v, want %v", so0.address, so1.address)
   179  	}
   180  	if so0.Balance().Cmp(so1.Balance()) != 0 {
   181  		t.Fatalf("Balance mismatch: have %v, want %v", so0.Balance(), so1.Balance())
   182  	}
   183  	if so0.Nonce() != so1.Nonce() {
   184  		t.Fatalf("Nonce mismatch: have %v, want %v", so0.Nonce(), so1.Nonce())
   185  	}
   186  	if so0.data.Root != so1.data.Root {
   187  		t.Errorf("Root mismatch: have %x, want %x", so0.data.Root[:], so1.data.Root[:])
   188  	}
   189  	if !bytes.Equal(so0.CodeHash(), so1.CodeHash()) {
   190  		t.Fatalf("CodeHash mismatch: have %v, want %v", so0.CodeHash(), so1.CodeHash())
   191  	}
   192  	if !bytes.Equal(so0.code, so1.code) {
   193  		t.Fatalf("Code mismatch: have %v, want %v", so0.code, so1.code)
   194  	}
   195  
   196  	if len(so1.cachedStorage) != len(so0.cachedStorage) {
   197  		t.Errorf("Storage size mismatch: have %d, want %d", len(so1.cachedStorage), len(so0.cachedStorage))
   198  	}
   199  	for k, v := range so1.cachedStorage {
   200  		if so0.cachedStorage[k] != v {
   201  			t.Errorf("Storage key %x mismatch: have %v, want %v", k, so0.cachedStorage[k], v)
   202  		}
   203  	}
   204  	for k, v := range so0.cachedStorage {
   205  		if so1.cachedStorage[k] != v {
   206  			t.Errorf("Storage key %x mismatch: have %v, want none.", k, v)
   207  		}
   208  	}
   209  
   210  	if so0.suicided != so1.suicided {
   211  		t.Fatalf("suicided mismatch: have %v, want %v", so0.suicided, so1.suicided)
   212  	}
   213  	if so0.deleted != so1.deleted {
   214  		t.Fatalf("Deleted mismatch: have %v, want %v", so0.deleted, so1.deleted)
   215  	}
   216  }