package test.ethereum.core;
import org.ethereum.core.AccountState;
import org.ethereum.core.Genesis;
import org.ethereum.core.Transaction;
import org.ethereum.core.TransactionReceipt;
import org.ethereum.crypto.HashUtil;
import org.ethereum.trie.Trie;
import org.ethereum.trie.TrieImpl;
import org.ethereum.util.RLP;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.spongycastle.util.encoders.Hex;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import test.ethereum.db.MockDB;
import java.math.BigInteger;
import static org.junit.Assert.assertEquals;
public class StateTest {
private static final String GENESIS_STATE_ROOT = "c67c70f5d7d3049337d1dcc0503a249881120019a8e7322774dbfe57b463718c";
private static final Logger logger = LoggerFactory.getLogger("test");
@Test
public void testGenesisAccounts() {
Trie trie = generateGenesisState();
assertEquals(GENESIS_STATE_ROOT, Hex.toHexString(trie.getRootHash()));
}
@Test // right way to calc tx trie hash
public void testCalculatePostTxState() {
/* txTrieHash */
String expected = "a77691cf47bec9021d3f027fc8ef2d51b758b600a79967154354b8e37108896f";
Transaction tx = new Transaction(
new byte[]{},
Hex.decode("09184E72A000"),
Hex.decode("03E8"),
Hex.decode("0000000000000000000000000000000000000000"),
Hex.decode("03e8"),
Hex.decode("60016000546006601160003960066000f261778e600054")
);
byte[] cowPrivKey = Hex.decode("c85ef7d79691fe79573b1a7064c19c1a9819ebdbd1faaab1a8ec92344438aaf4");
tx.sign(cowPrivKey);
byte[] postTxState = Hex.decode("7fa5bd00f6e03b5a5718560f1e25179b227167585a3c3da06a48f554365fb527");
byte[] cumGas = Hex.decode("0272");
TransactionReceipt tr = new TransactionReceipt(tx, postTxState, cumGas);
Trie trie = new TrieImpl(new MockDB());
trie.update(RLP.encodeInt(0), tr.getEncoded());
String txTrieRoot = Hex.toHexString(trie.getRootHash());
assertEquals(expected, txTrieRoot);
}
@Test // calc state after applying first tx on genesis
public void test2() {
// explanation:
// 0) create genesis
// 1) apply cost of tx to cd2a3d9f938e13cd947ec05abc7fe734df8dd826
// 2) create AccountState for 77045e71a7a2c50903d88e564cd72fab11e82051
// 3) minner gets the gas + coinbase ==> 6260000000000000 + 1500000000000000000
// 4) calc the root
Trie trie = generateGenesisState();
String expected = "6ae5f47b0cc54ca33b4a46537f6cf6673f9138e876f3ac5a33dde173efe28236";
// Get and update sender in world state
byte[] cowAddress = Hex.decode("cd2a3d9f938e13cd947ec05abc7fe734df8dd826");
byte[] rlpEncodedState = trie.get(cowAddress);
AccountState account_1 = new AccountState(rlpEncodedState);
account_1.addToBalance(new BigInteger("-6260000000001000"));
account_1.incrementNonce();
trie.update(cowAddress, account_1.getEncoded());
// Add contract to world state
byte[] codeData = Hex.decode("61778e600054");
AccountState account_2 = new AccountState(BigInteger.ZERO, BigInteger.valueOf(1000));
account_2.setCodeHash(HashUtil.sha3(codeData));
byte[] contractAddress = Hex.decode("77045e71a7a2c50903d88e564cd72fab11e82051"); // generated based on sender + nonce
trie.update(contractAddress, account_2.getEncoded());
// this is saved in the db
// trie.update(HashUtil.sha3(codeData), codeData);
// Update miner in world state
byte[] minerAddress = Hex.decode("4c5f4d519dff3c16f0d54b6866e256fbbbc1a600");
AccountState account_3 = new AccountState(BigInteger.ZERO, new BigInteger("1506260000000000000"));
trie.update(minerAddress, account_3.getEncoded());
assertEquals(expected, Hex.toHexString(trie.getRootHash()));
/* *** GROSS DATA ***
BlockData [
hash=22cf863ab836a6f5c29389d2e77f4792a3b3b52908c98ed14b1cbe91491a3e36
parentHash=77ef4fdaf389dca53236bcf7f72698e154eab2828f86fbc4fc6cd9225d285c89
unclesHash=1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347
coinbase=4c5f4d519dff3c16f0d54b6866e256fbbbc1a600
stateHash=69c21ff84a5af0b53b11c61110a16d6ad43dad37b3eb29ae8e88c936eb06456a
txTrieHash=a77691cf47bec9021d3f027fc8ef2d51b758b600a79967154354b8e37108896f
difficulty=3ff000
number=1
minGasPrice=10000000000000
gasLimit=999023
gasUsed=626
timestamp=1401979976 (2014.06.05 15:52:56)
extraData=null
nonce=0000000000000000000000000000000000000000000000005d439960040e4505
TransactionReceipt[
TransactionData [ hash=1ee6fa3149a5e9c09b54009eb6e108aaa7ecd79483d57eedcf2dff93a1505588 nonce=null,
gasPrice=09184e72a000, gas=03e8, receiveAddress=0000000000000000000000000000000000000000, value=03e8,
data=60016000546006601160003960066000f261778e600054, signatureV=27,
signatureR=2b379f22050e3554c3fa5423d9040bb28dcc7f905300db4e67c03bcf9b27003c,
signatureS=59f47793e050974e6b5fca2848b19925637b883a012693b54d712f1c4f74def5
]
, postTxState=7fa5bd00f6e03b5a5718560f1e25179b227167585a3c3da06a48f554365fb527
, cumulativeGas=0272]
]
+++ 4c5f4d519dff3c16f0d54b6866e256fbbbc1a600:
+++ 77045e71a7a2c50903d88e564cd72fab11e82051: $[61,77,8e,60,0,54] ([])
* cd2a3d9f938e13cd947ec05abc7fe734df8dd826: #1 1606938044258990275541962092341162602522202987522792835300376 (-6260000000001000)
*/
assertEquals(expected, Hex.toHexString(trie.getRootHash()));
}
private Trie generateGenesisState() {
Trie trie = new TrieImpl(new MockDB());
for (String address : Genesis.getPremine()) {
AccountState acct = new AccountState(BigInteger.ZERO, BigInteger.valueOf(2).pow(200));
trie.update(Hex.decode(address), acct.getEncoded());
}
return trie;
}
}