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This commit is contained in:
Martin Holst Swende 2020-03-02 14:06:44 +01:00
parent 361a6f08ac
commit fe8347ea8a
No known key found for this signature in database
GPG Key ID: 683B438C05A5DDF0
1 changed files with 75 additions and 2 deletions
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77
core/blockchain_test.go
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@ -2363,14 +2363,14 @@ func TestDeleteCreateRevert(t *testing.T) {
}
}
// TestDeleteRecreate tests a state-transition that contains both deletion
// TestDeleteRecreateSlots tests a state-transition that contains both deletion
// and recreation of contract state.
// Contract A exists, has slots 1 and 2 set
// Tx 1: Selfdestruct A
// Tx 2: Re-create A, set slots 3 and 4
// Expected outcome is that _all_ slots are cleared from A, due to the selfdestruct,
// and then the new slots exist
func TestDeleteRecreate(t *testing.T) {
func TestDeleteRecreateSlots(t *testing.T) {
var (
// Generate a canonical chain to act as the main dataset
engine = ethash.NewFaker()
@ -2490,3 +2490,76 @@ func TestDeleteRecreate(t *testing.T) {
t.Fatalf("got %x exp %x", got, exp)
}
}
// TestDeleteRecreateAccount tests a state-transition that contains deletion of a
// contract with storage, and a recreate of the same contract via a
// regular value-transfer
// Expected outcome is that _all_ slots are cleared from A
func TestDeleteRecreateAccount(t *testing.T) {
var (
// Generate a canonical chain to act as the main dataset
engine = ethash.NewFaker()
db = rawdb.NewMemoryDatabase()
// A sender who makes transactions, has some funds
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
address = crypto.PubkeyToAddress(key.PublicKey)
funds = big.NewInt(1000000000)
aa = common.HexToAddress("0x7217d81b76bdd8707601e959454e3d776aee5f43")
aaStorage = make(map[common.Hash]common.Hash) // Initial storage in AA
aaCode = []byte{byte(vm.PC), 0xFF} // Code for AA (simple selfdestruct)
)
// Populate two slots
aaStorage[common.HexToHash("01")] = common.HexToHash("01")
aaStorage[common.HexToHash("02")] = common.HexToHash("02")
gspec := &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{
address: {Balance: funds},
// The address 0xAAAAA selfdestructs if called
aa: {
// Code needs to just selfdestruct
Code: aaCode,
Nonce: 1,
Balance: big.NewInt(0),
Storage: aaStorage,
},
},
}
genesis := gspec.MustCommit(db)
blocks, _ := GenerateChain(params.TestChainConfig, genesis, engine, db, 1, func(i int, b *BlockGen) {
b.SetCoinbase(common.Address{1})
// One transaction to AA, to kill it
tx, _ := types.SignTx(types.NewTransaction(0, aa,
big.NewInt(0), 50000, big.NewInt(1), nil), types.HomesteadSigner{}, key)
b.AddTx(tx)
// One transaction to AA, to recreate it (but without storage
tx, _ = types.SignTx(types.NewTransaction(1, aa,
big.NewInt(1), 100000, big.NewInt(1), nil), types.HomesteadSigner{}, key)
b.AddTx(tx)
})
// Import the canonical chain
diskdb := rawdb.NewMemoryDatabase()
gspec.MustCommit(diskdb)
chain, err := NewBlockChain(diskdb, nil, params.TestChainConfig, engine, vm.Config{
Debug: true,
Tracer: vm.NewJSONLogger(nil, os.Stdout),
}, nil)
if err != nil {
t.Fatalf("failed to create tester chain: %v", err)
}
if n, err := chain.InsertChain(blocks); err != nil {
t.Fatalf("block %d: failed to insert into chain: %v", n, err)
}
statedb, _ := chain.State()
// If all is correct, then both slots are zero
if got, exp := statedb.GetState(aa, common.HexToHash("01")), (common.Hash{}); got != exp {
t.Errorf("got %x exp %x", got, exp)
}
if got, exp := statedb.GetState(aa, common.HexToHash("02")), (common.Hash{}); got != exp {
t.Errorf("got %x exp %x", got, exp)
}
}