public void TestShorterChainWins()
{
//TODO MemoryBlockchain.ChooseNewWinner non-determinism is causing this to fail
// create the first blockchain
var blockchain = new MemoryBlockchain();
// add some simple blocks
var block1 = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock);
var block2 = blockchain.MineAndAddEmptyBlock(block1.Item2);
var block3a = blockchain.MineAndAddEmptyBlock(block2.Item2);
var block4a = blockchain.MineAndAddEmptyBlock(block3a.Item2);
var block5a = blockchain.MineAndAddEmptyBlock(block4a.Item2);
// check
Assert.AreEqual(5, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block5a.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain.CurrentBlockchain.Utxo.Count);
// create a split with 3b, but do more work than current height 5 chain
blockchain.Rules.SetHighestTarget(UnitTestRules.Target2);
var block3b = blockchain.MineAndAddEmptyBlock(block2.Item2);
// check that blockchain reorganized to shorter chain
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3b.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain.CurrentBlockchain.Utxo.Count);
}
public void TestAddSingleBlock()
{
var blockchain = new MemoryBlockchain();
var block = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock).Item1;
Assert.AreEqual(1, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block.Hash, blockchain.CurrentBlockchain.RootBlockHash);
}
public void TestAddSingleBlock()
{
var blockchain = new MemoryBlockchain();
var block = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock).Item1;
Assert.AreEqual(1, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block.Hash, blockchain.CurrentBlockchain.RootBlockHash);
}
public void TestDoubleSpend()
{
var blockchain = new MemoryBlockchain();
// create a new keypair to spend to
var toKeyPair = TransactionManager.CreateKeyPair();
var toPrivateKey = toKeyPair.Item1;
var toPublicKey = toKeyPair.Item2;
// create a new keypair to double spend to
var toKeyPairBad = TransactionManager.CreateKeyPair();
var toPrivateKeyBad = toKeyPair.Item1;
var toPublicKeyBad = toKeyPair.Item2;
// add some simple blocks
var block1 = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock);
var block2 = blockchain.MineAndAddEmptyBlock(block1.Item2);
// check
Assert.AreEqual(2, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block2.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(2, blockchain.CurrentBlockchain.Utxo.Count);
// spend block 2's coinbase in block 3
var block3Block = blockchain.CreateEmptyBlock(block2.Item2);
var spendTx = TransactionManager.CreateSpendTransaction(block2.Item1.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 50 * SATOSHI_PER_BTC, blockchain.CoinbasePrivateKey, blockchain.CoinbasePublicKey, toPublicKey);
block3Block = block3Block.WithAddedTransactions(spendTx);
var block3 = blockchain.MineAndAddBlock(block3Block, block2.Item2);
// check
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(3, blockchain.CurrentBlockchain.Utxo.Count);
// attempt to spend block 2's coinbase again in block 4
var block4BadBlock = blockchain.CreateEmptyBlock(block3.Item2);
var doubleSpendTx = TransactionManager.CreateSpendTransaction(block2.Item1.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 50 * SATOSHI_PER_BTC, blockchain.CoinbasePrivateKey, blockchain.CoinbasePublicKey, toPublicKeyBad);
block4BadBlock = block4BadBlock.WithAddedTransactions(doubleSpendTx);
var block4Bad = blockchain.MineAndAddBlock(block4BadBlock, block3.Item2);
// check that bad block wasn't added
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(3, blockchain.CurrentBlockchain.Utxo.Count);
// add a simple block
var block4 = blockchain.MineAndAddEmptyBlock(block3.Item2);
// check
Assert.AreEqual(4, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block4.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(4, blockchain.CurrentBlockchain.Utxo.Count);
}
public void TestDoubleSpend()
{
var blockchain = new MemoryBlockchain();
// create a new keypair to spend to
var toKeyPair = TransactionManager.CreateKeyPair();
var toPrivateKey = toKeyPair.Item1;
var toPublicKey = toKeyPair.Item2;
// create a new keypair to double spend to
var toKeyPairBad = TransactionManager.CreateKeyPair();
var toPrivateKeyBad = toKeyPair.Item1;
var toPublicKeyBad = toKeyPair.Item2;
// add some simple blocks
var block1 = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock);
var block2 = blockchain.MineAndAddEmptyBlock(block1.Item2);
// check
Assert.AreEqual(2, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block2.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(2, blockchain.CurrentBlockchain.Utxo.Count);
// spend block 2's coinbase in block 3
var block3Block = blockchain.CreateEmptyBlock(block2.Item2);
var spendTx = TransactionManager.CreateSpendTransaction(block2.Item1.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 50 * SATOSHI_PER_BTC, blockchain.CoinbasePrivateKey, blockchain.CoinbasePublicKey, toPublicKey);
block3Block = block3Block.WithAddedTransactions(spendTx);
var block3 = blockchain.MineAndAddBlock(block3Block, block2.Item2);
// check
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(3, blockchain.CurrentBlockchain.Utxo.Count);
// attempt to spend block 2's coinbase again in block 4
var block4BadBlock = blockchain.CreateEmptyBlock(block3.Item2);
var doubleSpendTx = TransactionManager.CreateSpendTransaction(block2.Item1.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 50 * SATOSHI_PER_BTC, blockchain.CoinbasePrivateKey, blockchain.CoinbasePublicKey, toPublicKeyBad);
block4BadBlock = block4BadBlock.WithAddedTransactions(doubleSpendTx);
var block4Bad = blockchain.MineAndAddBlock(block4BadBlock, block3.Item2);
// check that bad block wasn't added
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(3, blockchain.CurrentBlockchain.Utxo.Count);
// add a simple block
var block4 = blockchain.MineAndAddEmptyBlock(block3.Item2);
// check
Assert.AreEqual(4, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block4.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
Assert.AreEqual(4, blockchain.CurrentBlockchain.Utxo.Count);
}
public void TestLongBlockchain()
{
var blockchain = new MemoryBlockchain();
var count = 1.THOUSAND();
var chainedBlock = blockchain.GenesisChainedBlock;
for (var i = 0; i < count; i++)
{
Debug.WriteLine("TestLongBlockchain mining block {0:#,##0}".Format2(i));
chainedBlock = blockchain.MineAndAddEmptyBlock(chainedBlock).Item2;
}
Assert.AreEqual(count, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(chainedBlock.BlockHash, blockchain.CurrentBlockchain.RootBlockHash);
}
public void TestSimpleBlockchainSplit()
{
//TODO MemoryBlockchain.ChooseNewWinner non-determinism is causing this to fail
// create the first blockchain
var blockchain1 = new MemoryBlockchain();
// add some simple blocks
var block1 = blockchain1.MineAndAddEmptyBlock(blockchain1.GenesisChainedBlock);
var block2 = blockchain1.MineAndAddEmptyBlock(block1.Item2);
// introduce a split, do more work on 3a
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target1);
var block3a = blockchain1.MineAndAddEmptyBlock(block2.Item2);
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target0);
var block3b = blockchain1.MineAndAddEmptyBlock(block2.Item2);
// check that 3a is current as it has more work
Assert.AreEqual(3, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block3a.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(3, blockchain1.CurrentBlockchain.Utxo.Count);
// continue split
var block4a = blockchain1.MineAndAddEmptyBlock(block3a.Item2);
var block4b = blockchain1.MineAndAddEmptyBlock(block3b.Item2);
// check
Assert.AreEqual(4, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block4a.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(4, blockchain1.CurrentBlockchain.Utxo.Count);
// resolve split, with other chain winning
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target1);
var block5b = blockchain1.MineAndAddEmptyBlock(block4b.Item2);
// check that blockchain reorged to the winning chain
Assert.AreEqual(5, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block5b.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain1.CurrentBlockchain.Utxo.Count);
// continue on winning fork
var block6b = blockchain1.MineAndAddEmptyBlock(block5b.Item2);
// check that blockchain reorged to the winning chain
Assert.AreEqual(6, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block6b.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain1.CurrentBlockchain.Utxo.Count);
// create a second blockchain, reusing the genesis from the first
var blockchain2 = new MemoryBlockchain(blockchain1.GenesisBlock);
// add only the winning blocks to the second blockchain
blockchain2.AddBlock(block1.Item1, blockchain2.GenesisChainedBlock);
blockchain2.AddBlock(block2.Item1, block1.Item2);
blockchain2.AddBlock(block3b.Item1, block2.Item2);
blockchain2.AddBlock(block4b.Item1, block3b.Item2);
blockchain2.AddBlock(block5b.Item1, block4b.Item2);
blockchain2.AddBlock(block6b.Item1, block5b.Item2);
// check second blockchain
Assert.AreEqual(6, blockchain2.CurrentBlockchain.Height);
Assert.AreEqual(block6b.Item1.Hash, blockchain2.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain2.CurrentBlockchain.Utxo.Count);
// verify that re-organized blockchain matches winning-only blockchain
var actualUtxo = blockchain1.CurrentBlockchain.Utxo;
var expectedUtxo = blockchain2.CurrentBlockchain.Utxo;
Assert.IsTrue(expectedUtxo.SequenceEqual(actualUtxo));
}
public void TestLongBlockchain()
{
var blockchain = new MemoryBlockchain();
var count = 1.THOUSAND();
var chainedBlock = blockchain.GenesisChainedBlock;
for (var i = 0; i < count; i++)
{
Debug.WriteLine("TestLongBlockchain mining block {0:#,##0}".Format2(i));
chainedBlock = blockchain.MineAndAddEmptyBlock(chainedBlock).Item2;
}
Assert.AreEqual(count, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(chainedBlock.BlockHash, blockchain.CurrentBlockchain.RootBlockHash);
}
public void TestSimpleBlockchainSplit()
{
//TODO MemoryBlockchain.ChooseNewWinner non-determinism is causing this to fail
// create the first blockchain
var blockchain1 = new MemoryBlockchain();
// add some simple blocks
var block1 = blockchain1.MineAndAddEmptyBlock(blockchain1.GenesisChainedBlock);
var block2 = blockchain1.MineAndAddEmptyBlock(block1.Item2);
// introduce a split, do more work on 3a
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target1);
var block3a = blockchain1.MineAndAddEmptyBlock(block2.Item2);
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target0);
var block3b = blockchain1.MineAndAddEmptyBlock(block2.Item2);
// check that 3a is current as it has more work
Assert.AreEqual(3, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block3a.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(3, blockchain1.CurrentBlockchain.Utxo.Count);
// continue split
var block4a = blockchain1.MineAndAddEmptyBlock(block3a.Item2);
var block4b = blockchain1.MineAndAddEmptyBlock(block3b.Item2);
// check
Assert.AreEqual(4, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block4a.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(4, blockchain1.CurrentBlockchain.Utxo.Count);
// resolve split, with other chain winning
blockchain1.Rules.SetHighestTarget(UnitTestRules.Target1);
var block5b = blockchain1.MineAndAddEmptyBlock(block4b.Item2);
// check that blockchain reorged to the winning chain
Assert.AreEqual(5, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block5b.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain1.CurrentBlockchain.Utxo.Count);
// continue on winning fork
var block6b = blockchain1.MineAndAddEmptyBlock(block5b.Item2);
// check that blockchain reorged to the winning chain
Assert.AreEqual(6, blockchain1.CurrentBlockchain.Height);
Assert.AreEqual(block6b.Item1.Hash, blockchain1.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain1.CurrentBlockchain.Utxo.Count);
// create a second blockchain, reusing the genesis from the first
var blockchain2 = new MemoryBlockchain(blockchain1.GenesisBlock);
// add only the winning blocks to the second blockchain
blockchain2.AddBlock(block1.Item1, blockchain2.GenesisChainedBlock);
blockchain2.AddBlock(block2.Item1, block1.Item2);
blockchain2.AddBlock(block3b.Item1, block2.Item2);
blockchain2.AddBlock(block4b.Item1, block3b.Item2);
blockchain2.AddBlock(block5b.Item1, block4b.Item2);
blockchain2.AddBlock(block6b.Item1, block5b.Item2);
// check second blockchain
Assert.AreEqual(6, blockchain2.CurrentBlockchain.Height);
Assert.AreEqual(block6b.Item1.Hash, blockchain2.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain2.CurrentBlockchain.Utxo.Count);
// verify that re-organized blockchain matches winning-only blockchain
var actualUtxo = blockchain1.CurrentBlockchain.Utxo;
var expectedUtxo = blockchain2.CurrentBlockchain.Utxo;
Assert.IsTrue(expectedUtxo.SequenceEqual(actualUtxo));
}
public void TestShorterChainWins()
{
//TODO MemoryBlockchain.ChooseNewWinner non-determinism is causing this to fail
// create the first blockchain
var blockchain = new MemoryBlockchain();
// add some simple blocks
var block1 = blockchain.MineAndAddEmptyBlock(blockchain.GenesisChainedBlock);
var block2 = blockchain.MineAndAddEmptyBlock(block1.Item2);
var block3a = blockchain.MineAndAddEmptyBlock(block2.Item2);
var block4a = blockchain.MineAndAddEmptyBlock(block3a.Item2);
var block5a = blockchain.MineAndAddEmptyBlock(block4a.Item2);
// check
Assert.AreEqual(5, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block5a.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain.CurrentBlockchain.Utxo.Count);
// create a split with 3b, but do more work than current height 5 chain
blockchain.Rules.SetHighestTarget(UnitTestRules.Target2);
var block3b = blockchain.MineAndAddEmptyBlock(block2.Item2);
// check that blockchain reorganized to shorter chain
Assert.AreEqual(3, blockchain.CurrentBlockchain.Height);
Assert.AreEqual(block3b.Item1.Hash, blockchain.CurrentBlockchain.RootBlockHash);
//TODO Assert.AreEqual(5, blockchain.CurrentBlockchain.Utxo.Count);
}
