public void TestSimpleSpend()
{
using (var daemon = new TestDaemon())
{
// create a new keypair to spend to
var toKeyPair = daemon.TxManager.CreateKeyPair();
var toPrivateKey = toKeyPair.Item1;
var toPublicKey = toKeyPair.Item2;
// add some simple blocks
var block1 = daemon.MineAndAddEmptyBlock(daemon.GenesisBlock);
var block2 = daemon.MineAndAddEmptyBlock(block1);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(2, block2.Hash, daemon.BlockchainDaemon);
// attempt to spend block 2's coinbase in block 3
var spendTx = daemon.TxManager.CreateSpendTransaction(block2.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 50 * SATOSHI_PER_BTC, daemon.CoinbasePrivateKey, daemon.CoinbasePublicKey, toPublicKey);
var block3Unmined = daemon.CreateEmptyBlock(block2)
.WithAddedTransactions(spendTx);
var block3 = daemon.MineAndAddBlock(block3Unmined);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(3, block3.Hash, daemon.BlockchainDaemon);
// add a simple block
var block4 = daemon.MineAndAddEmptyBlock(block3);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(4, block4.Hash, daemon.BlockchainDaemon);
}
}
public void TestInsufficientBalance()
{
using (var daemon = new TestDaemon())
{
// create a new keypair to spend to
var toKeyPair = daemon.TxManager.CreateKeyPair();
var toPrivateKey = toKeyPair.Item1;
var toPublicKey = toKeyPair.Item2;
// add some simple blocks
var block1 = daemon.MineAndAddEmptyBlock(daemon.GenesisBlock);
var block2 = daemon.MineAndAddEmptyBlock(block1);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(2, block2.Hash, daemon.BlockchainDaemon);
// attempt to spend block 2's coinbase in block 3, using twice its value
var spendTx = daemon.TxManager.CreateSpendTransaction(block2.Transactions[0], 0, (byte)ScriptHashType.SIGHASH_ALL, 100 * SATOSHI_PER_BTC, daemon.CoinbasePrivateKey, daemon.CoinbasePublicKey, toPublicKey);
var block3BadUnmined = daemon.CreateEmptyBlock(block2)
.WithAddedTransactions(spendTx);
var block3Bad = daemon.MineAndAddBlock(block3BadUnmined);
// check that bad block wasn't added
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(2, block2.Hash, daemon.BlockchainDaemon);
// add a simple block
var block3Good = daemon.MineAndAddEmptyBlock(block2);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(3, block3Good.Hash, daemon.BlockchainDaemon);
}
}
public void TestAddSingleBlock()
{
using (var daemon = new TestDaemon())
{
var block1 = daemon.MineAndAddEmptyBlock(daemon.GenesisBlock);
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(1, block1.Hash, daemon.BlockchainDaemon);
}
}
public void TestShorterChainWins()
{
using (var daemon = new TestDaemon())
{
// add some simple blocks
var block1 = daemon.MineAndAddEmptyBlock(daemon.GenesisBlock);
var block2 = daemon.MineAndAddEmptyBlock(block1);
var block3a = daemon.MineAndAddEmptyBlock(block2);
var block4a = daemon.MineAndAddEmptyBlock(block3a);
var block5a = daemon.MineAndAddEmptyBlock(block4a);
// check
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(5, block5a.Hash, daemon.BlockchainDaemon);
// create a split with 3b, but do more work than current height 5 chain
daemon.Rules.SetHighestTarget(UnitTestRules.Target2);
var block3b = daemon.MineAndAddEmptyBlock(block2, UnitTestRules.Target2);
// check that blockchain reorganized to shorter chain
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(3, block3b.Hash, daemon.BlockchainDaemon);
}
}
public void TestLongBlockchain()
{
if (Debugger.IsAttached)
{
Assert.Inconclusive();
}
using (var daemon = new TestDaemon())
{
var count = 1.THOUSAND();
var height = 0;
var block = daemon.GenesisBlock;
for (var i = 0; i < count; i++)
{
Debug.WriteLine("TestLongBlockchain mining block {0:#,##0}".Format2(i));
height++;
block = daemon.MineAndAddEmptyBlock(block);
}
daemon.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(height, block.Hash, daemon.BlockchainDaemon);
}
}
public void TestSimpleBlockchainSplit()
{
using (var daemon1 = new TestDaemon())
{
// add some simple blocks
var block1 = daemon1.MineAndAddEmptyBlock(daemon1.GenesisBlock);
var block2 = daemon1.MineAndAddEmptyBlock(block1);
// introduce a tie split
var block3a = daemon1.MineAndAddEmptyBlock(block2);
var block3b = daemon1.MineAndAddEmptyBlock(block2);
// check that 3a is current as it was first
daemon1.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(3, block3a.Hash, daemon1.BlockchainDaemon);
// continue split
var block4a = daemon1.MineAndAddEmptyBlock(block3a);
var block4b = daemon1.MineAndAddEmptyBlock(block3b);
// check that 4a is current as it was first
daemon1.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(4, block4a.Hash, daemon1.BlockchainDaemon);
// resolve tie split, with other chain winning
var block5b = daemon1.MineAndAddEmptyBlock(block4b);
// check that blockchain reorged to the winning chain
daemon1.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(5, block5b.Hash, daemon1.BlockchainDaemon);
// continue on winning fork
var block6b = daemon1.MineAndAddEmptyBlock(block5b);
// check that blockchain continued on the winning chain
daemon1.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(6, block6b.Hash, daemon1.BlockchainDaemon);
// create a second blockchain, reusing the genesis from the first
using (var daemon2 = new TestDaemon(daemon1.GenesisBlock))
{
// add only the winning blocks to the second blockchain
daemon2.AddBlock(block1);
daemon2.AddBlock(block2);
daemon2.AddBlock(block3b);
daemon2.AddBlock(block4b);
daemon2.AddBlock(block5b);
daemon2.AddBlock(block6b);
// check second blockchain
daemon2.WaitForDaemon();
AssertMethods.AssertDaemonAtBlock(6, block6b.Hash, daemon2.BlockchainDaemon);
// verify that re-organized blockchain matches winning-only blockchain
using (var expectedChainSate = daemon2.BlockchainDaemon.GetChainState())
using (var actualChainSate = daemon1.BlockchainDaemon.GetChainState())
{
var expectedUtxo = expectedChainSate.Utxo;
var expectedUnspentTransactions = ImmutableDictionary.CreateRange <UInt256, UnspentTx>(expectedUtxo.GetUnspentTransactions());
var expectedUnspentOutputs = ImmutableDictionary.CreateRange <TxOutputKey, TxOutput>(expectedUtxo.GetUnspentOutputs());
var actualUtxo = actualChainSate.Utxo;
var actualUnspentTransactions = ImmutableDictionary.CreateRange <UInt256, UnspentTx>(actualUtxo.GetUnspentTransactions());
var actualUnspentOutputs = ImmutableDictionary.CreateRange <TxOutputKey, TxOutput>(actualUtxo.GetUnspentOutputs());
CollectionAssert.AreEquivalent(expectedUnspentTransactions, actualUnspentTransactions);
CollectionAssert.AreEquivalent(expectedUnspentOutputs, actualUnspentOutputs);
}
}
}
}