forked from planetarium/libplanet
/
BlockChainTest.cs
1145 lines (1005 loc) · 41.2 KB
/
BlockChainTest.cs
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using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Security.Cryptography;
using Libplanet.Action;
using Libplanet.Blockchain;
using Libplanet.Blockchain.Policies;
using Libplanet.Blocks;
using Libplanet.Crypto;
using Libplanet.Store;
using Libplanet.Tests.Common.Action;
using Libplanet.Tests.Store;
using Libplanet.Tx;
using Xunit;
namespace Libplanet.Tests.Blockchain
{
public class BlockChainTest : IDisposable
{
private FileStoreFixture _fx;
private BlockChain<DumbAction> _blockChain;
public BlockChainTest()
{
_fx = new FileStoreFixture();
_blockChain = new BlockChain<DumbAction>(
new BlockPolicy<DumbAction>(),
_fx.Store
);
}
public void Dispose()
{
_fx.Dispose();
}
[Fact]
public void CanMineBlock()
{
Block<DumbAction> block = _blockChain.MineBlock(_fx.Address1);
block.Validate(DateTimeOffset.UtcNow);
Assert.Contains(block, _blockChain);
Block<DumbAction> anotherBlock = _blockChain.MineBlock(_fx.Address2);
anotherBlock.Validate(DateTimeOffset.UtcNow);
Assert.Contains(anotherBlock, _blockChain);
}
[Fact]
public void CanFindBlockByIndex()
{
// use assignment to snooze compiler error (CS0201)
Assert.Throws<ArgumentOutOfRangeException>(() => { var x = _blockChain[0]; });
Block<DumbAction> block = _blockChain.MineBlock(_fx.Address1);
Assert.Equal(block, _blockChain[0]);
Block<DumbAction> anotherBlock = _blockChain.MineBlock(_fx.Address2);
Assert.Equal(anotherBlock, _blockChain[1]);
}
[Fact]
public void CanIterate()
{
Assert.Empty(_blockChain);
_blockChain.MineBlock(_fx.Address1);
Assert.NotEmpty(_blockChain);
}
[Fact]
public void StageTransactions()
{
Assert.Empty(_blockChain.Transactions);
var txs = new HashSet<Transaction<DumbAction>>()
{
_fx.Transaction1,
_fx.Transaction2,
};
Dictionary<Transaction<DumbAction>, bool> toStage =
txs.ToDictionary(tx => tx, _ => true);
_blockChain.StageTransactions(toStage);
Assert.Equal(
txs,
_blockChain.Transactions.Values.ToHashSet()
);
}
[Fact]
public void UnstageTransactions()
{
Assert.Empty(_blockChain.Transactions);
var txs = new HashSet<Transaction<DumbAction>>()
{
_fx.Transaction1,
_fx.Transaction2,
};
Dictionary<Transaction<DumbAction>, bool> toStage =
txs.ToDictionary(tx => tx, _ => true);
_blockChain.StageTransactions(toStage);
HashSet<TxId> txIds = txs.Select(tx => tx.Id).ToHashSet();
HashSet<TxId> stagedTxIds = _blockChain.Store
.IterateStagedTransactionIds().ToHashSet();
Assert.Equal(txIds, stagedTxIds);
_blockChain.UnstageTransactions(txs);
Assert.Empty(_blockChain.Store.IterateStagedTransactionIds());
}
[Fact]
public void ProcessActions()
{
var actions1 = new List<PolymorphicAction<BaseAction>>()
{
new Attack
{
Weapon = "sword",
Target = "goblin",
TargetAddress = _fx.Address1,
},
new Attack
{
Weapon = "sword",
Target = "orc",
TargetAddress = _fx.Address1,
},
new Attack
{
Weapon = "staff",
Target = "goblin",
TargetAddress = _fx.Address1,
},
};
var tx1 = Transaction<PolymorphicAction<BaseAction>>.Create(
0,
new PrivateKey(),
actions1
);
var chain = new BlockChain<PolymorphicAction<BaseAction>>(
new BlockPolicy<PolymorphicAction<BaseAction>>(),
_fx.Store
);
chain.StageTransactions(
new Dictionary<Transaction<PolymorphicAction<BaseAction>>, bool> { { tx1, true } }
);
var lastBlock = chain.MineBlock(_fx.Address1);
AddressStateMap states = chain.GetStates(
new List<Address> { _fx.Address1 }
);
Assert.NotEmpty(states);
var result = (BattleResult)states[_fx.Address1];
Assert.Contains("sword", result.UsedWeapons);
Assert.Contains("staff", result.UsedWeapons);
Assert.Contains("orc", result.Targets);
Assert.Contains("goblin", result.Targets);
PolymorphicAction<BaseAction>[] actions2 =
{
new Attack
{
Weapon = "bow",
Target = "goblin",
TargetAddress = _fx.Address1,
},
};
var tx2 = Transaction<PolymorphicAction<BaseAction>>.Create(
0,
new PrivateKey(),
actions2
);
chain.StageTransactions(
new Dictionary<Transaction<PolymorphicAction<BaseAction>>, bool> { { tx2, true } }
);
chain.MineBlock(_fx.Address1);
states = chain.GetStates(new List<Address> { _fx.Address1 });
result = (BattleResult)states[_fx.Address1];
Assert.Contains("bow", result.UsedWeapons);
var tx3 = Transaction<PolymorphicAction<BaseAction>>.Create(
0,
new PrivateKey(),
new List<PolymorphicAction<BaseAction>>
{
new Attack
{
Weapon = "sword",
Target = "orc",
TargetAddress = _fx.Address1,
},
}
);
chain.StageTransactions(
new Dictionary<Transaction<PolymorphicAction<BaseAction>>, bool> { { tx3, true } }
);
chain.MineBlock(_fx.Address1);
states = chain.GetStates(new List<Address> { _fx.Address1 });
Assert.NotEmpty(states);
}
[Fact]
public void Append()
{
DumbAction.RenderRecords.Value =
ImmutableList<DumbAction.RenderRecord>.Empty;
Address[] addresses = Enumerable.Repeat(0, 4)
.Select(_ => new PrivateKey().PublicKey.ToAddress())
.ToArray();
Assert.Empty(_blockChain.Blocks);
try
{
Block<DumbAction> b0 = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(b0);
Assert.Contains(b0, _blockChain);
Assert.Equal(new[] { b0 }, _blockChain.ToArray());
Assert.Empty(DumbAction.RenderRecords.Value);
Transaction<DumbAction>[] txs =
{
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[0], "foo"),
new DumbAction(addresses[1], "bar"),
}),
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[2], "baz"),
new DumbAction(addresses[3], "qux"),
}),
};
Block<DumbAction> b1 = TestUtils.MineNext(
b0,
txs,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain)
);
_blockChain.Append(b1);
Assert.Contains(b1, _blockChain);
Assert.Equal(new[] { b0, b1 }, _blockChain.ToArray());
var renders = DumbAction.RenderRecords.Value;
Assert.Equal(4, renders.Count);
Assert.True(renders.All(r => r.Render));
Assert.Equal("foo", renders[0].Action.Item);
Assert.Equal(1, renders[0].Context.BlockIndex);
Assert.Equal(
new string[] { null, null, null, null },
addresses.Select(renders[0].Context.PreviousStates.GetState)
);
Assert.Equal(
new[] { "foo", null, null, null },
addresses.Select(renders[0].NextStates.GetState)
);
Assert.Equal("bar", renders[1].Action.Item);
Assert.Equal(1, renders[1].Context.BlockIndex);
Assert.Equal(
addresses.Select(renders[0].NextStates.GetState),
addresses.Select(renders[1].Context.PreviousStates.GetState)
);
Assert.Equal(
new[] { "foo", "bar", null, null },
addresses.Select(renders[1].NextStates.GetState)
);
Assert.Equal("baz", renders[2].Action.Item);
Assert.Equal(1, renders[2].Context.BlockIndex);
Assert.Equal(
addresses.Select(renders[1].NextStates.GetState),
addresses.Select(renders[2].Context.PreviousStates.GetState)
);
Assert.Equal(
new[] { "foo", "bar", "baz", null },
addresses.Select(renders[2].NextStates.GetState)
);
Assert.Equal("qux", renders[3].Action.Item);
Assert.Equal(1, renders[3].Context.BlockIndex);
Assert.Equal(
addresses.Select(renders[2].NextStates.GetState),
addresses.Select(renders[3].Context.PreviousStates.GetState)
);
Assert.Equal(
new[] { "foo", "bar", "baz", "qux" },
addresses.Select(renders[3].NextStates.GetState)
);
}
finally
{
DumbAction.RenderRecords.Value =
ImmutableList<DumbAction.RenderRecord>.Empty;
}
}
[Fact]
public void AppendValidatesBlock()
{
var blockChain = new BlockChain<DumbAction>(
new NullPolicy<DumbAction>(
new InvalidBlockDifficultyException(string.Empty)),
_fx.Store);
Assert.Throws<InvalidBlockDifficultyException>(
() => blockChain.Append(_fx.Block1));
}
[Fact]
public void FindNextHashes()
{
Assert.Empty(_blockChain.FindNextHashes(
new BlockLocator(new HashDigest<SHA256>[] { })
));
_blockChain.Append(_fx.Block1);
var block0 = _fx.Block1;
var block1 = _blockChain.MineBlock(_fx.Address1);
var block2 = _blockChain.MineBlock(_fx.Address1);
var block3 = _blockChain.MineBlock(_fx.Address1);
Assert.Equal(
new[] { block0.Hash, block1.Hash, block2.Hash, block3.Hash, },
_blockChain.FindNextHashes(
new BlockLocator(new[] { block0.Hash })));
Assert.Equal(
new[] { block1.Hash, block2.Hash, block3.Hash },
_blockChain.FindNextHashes(
new BlockLocator(new[] { block1.Hash, block0.Hash })));
Assert.Equal(
new[] { block0.Hash, block1.Hash, block2.Hash },
_blockChain.FindNextHashes(
new BlockLocator(new[] { block0.Hash }),
stop: block2.Hash));
Assert.Equal(
new[] { block0.Hash, block1.Hash },
_blockChain.FindNextHashes(
new BlockLocator(new[] { block0.Hash }),
count: 2));
}
[Fact]
public void CanFork()
{
var block1 = _blockChain.MineBlock(_fx.Address1);
var block2 = _blockChain.MineBlock(_fx.Address1);
var block3 = _blockChain.MineBlock(_fx.Address1);
BlockChain<DumbAction> forked = _blockChain.Fork(block2.Hash);
Assert.Equal(new[] { block1, block2, block3 }, _blockChain);
Assert.Equal(new[] { block1, block2 }, forked);
}
[Fact]
public void ForkStateReferences()
{
Address addr1 = new PrivateKey().PublicKey.ToAddress();
Address addr2 = new PrivateKey().PublicKey.ToAddress();
var actions1 = new[] { new DumbAction(addr1, "foo") };
var actions2 = new[] { new DumbAction(addr2, "bar") };
Transaction<DumbAction>[] txsA =
{
_fx.MakeTransaction(actions1),
};
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(actions2),
};
Transaction<DumbAction>[] txsC =
{
_fx.MakeTransaction(actions2),
};
Block<DumbAction> genesis = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(genesis);
Block<DumbAction> b1 = TestUtils.MineNext(
genesis,
txsA,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b1);
Block<DumbAction> b2 = TestUtils.MineNext(
b1,
txsB,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b2);
Block<DumbAction> b3 = TestUtils.MineNext(
b2,
txsC,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b3);
// Fork from genesis and append two empty blocks.
BlockChain<DumbAction> forked = _blockChain.Fork(genesis.Hash);
string fId = forked.Id.ToString();
Block<DumbAction> fb1 = TestUtils.MineNext(genesis, difficulty: b1.Difficulty);
Block<DumbAction> fb2 = TestUtils.MineNext(fb1, difficulty: b2.Difficulty);
forked.Append(fb1);
forked.Append(fb2);
Assert.Null(
forked.Store.LookupStateReference(fId, addr1, forked.Tip));
Assert.Null(
forked.Store.LookupStateReference(fId, addr2, forked.Tip));
// Fork from b1 and append a empty block.
forked = _blockChain.Fork(b1.Hash);
fId = forked.Id.ToString();
fb2 = TestUtils.MineNext(b1, difficulty: b2.Difficulty);
forked.Append(fb2);
Assert.Equal(
b1.Hash,
forked.Store.LookupStateReference(fId, addr1, forked.Tip));
Assert.Null(
forked.Store.LookupStateReference(fId, addr2, forked.Tip));
// Fork from b2.
forked = _blockChain.Fork(b2.Hash);
fId = forked.Id.ToString();
Assert.Equal(
b1.Hash,
forked.Store.LookupStateReference(fId, addr1, forked.Tip));
Assert.Equal(
b2.Hash,
forked.Store.LookupStateReference(fId, addr2, forked.Tip));
}
[Fact]
public void DetectInvalidTxNonce()
{
var privateKey = new PrivateKey();
var actions = new[] { new DumbAction(_fx.Address1, "foo") };
Block<DumbAction> genesis = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(genesis);
Transaction<DumbAction>[] txsA =
{
_fx.MakeTransaction(actions, privateKey: privateKey),
};
Block<DumbAction> b1 = TestUtils.MineNext(
genesis,
txsA,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b1);
Block<DumbAction> b2 = TestUtils.MineNext(
b1,
txsA,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
Assert.Throws<InvalidTxNonceException>(() =>
_blockChain.Append(b2));
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(
actions,
nonce: 1,
privateKey: privateKey),
};
b2 = TestUtils.MineNext(
b1,
txsB,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b2);
}
[Fact]
public void ForkTxNonce()
{
var privateKey = new PrivateKey();
var address = privateKey.PublicKey.ToAddress();
var actions = new[] { new DumbAction(address, "foo") };
Block<DumbAction> genesis = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(genesis);
Transaction<DumbAction>[] txsA =
{
_fx.MakeTransaction(actions, privateKey: privateKey),
};
Assert.Equal(0, _blockChain.GetNextTxNonce(address));
Block<DumbAction> b1 = TestUtils.MineNext(
genesis,
txsA,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b1);
Assert.Equal(1, _blockChain.GetNextTxNonce(address));
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(
actions,
nonce: 1,
privateKey: privateKey),
};
Block<DumbAction> b2 = TestUtils.MineNext(
b1,
txsB,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b2);
Assert.Equal(2, _blockChain.GetNextTxNonce(address));
BlockChain<DumbAction> forked = _blockChain.Fork(b1.Hash);
Assert.Equal(1, forked.GetNextTxNonce(address));
}
[Fact]
public void CanGetBlockLocator()
{
List<Block<DumbAction>> blocks = Enumerable.Range(0, 10)
.Select(_ => _blockChain.MineBlock(_fx.Address1))
.ToList();
BlockLocator actual = _blockChain.GetBlockLocator(threshold: 2);
BlockLocator expected = new BlockLocator(new[]
{
blocks[9].Hash,
blocks[8].Hash,
blocks[7].Hash,
blocks[6].Hash,
blocks[4].Hash,
blocks[0].Hash,
});
Assert.Equal(expected, actual);
}
[Fact]
public void Swap()
{
// FIXME: Poor man's fixture --- should make a proper fixture.
Append();
BlockChain<DumbAction> fork =
_blockChain.Fork(_blockChain.Tip.Hash);
Address[] addresses = Enumerable.Repeat(0, 4)
.Select(_ => new PrivateKey().PublicKey.ToAddress())
.ToArray();
Transaction<DumbAction>[][] txsA =
{
new[]
{
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[0], "foo"),
}),
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[1], "bar"),
}),
},
new[]
{
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[2], "baz"),
}),
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[3], "qux"),
}),
},
};
foreach (Transaction<DumbAction>[] txs in txsA)
{
Block<DumbAction> b = TestUtils.MineNext(
_blockChain.Tip,
txs,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain)
);
_blockChain.Append(b);
}
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[0], "fork-foo"),
}),
_fx.MakeTransaction(new[]
{
new DumbAction(addresses[1], "fork-bar"),
new DumbAction(addresses[2], "fork-baz"),
}),
};
try
{
DumbAction.RenderRecords.Value =
ImmutableList<DumbAction.RenderRecord>.Empty;
Block<DumbAction> forkTip = TestUtils.MineNext(
fork.Tip,
txsB,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain)
);
fork.Append(forkTip, DateTimeOffset.UtcNow, render: false);
_blockChain.Swap(fork);
var renders = DumbAction.RenderRecords.Value;
int actionsCountA = txsA.Sum(
a => a.Sum(tx => tx.Actions.Count)
);
int actionsCountB = txsB.Sum(tx => tx.Actions.Count);
Assert.Equal(actionsCountB + actionsCountA, renders.Count);
Assert.True(renders.Take(actionsCountA).All(r => r.Unrender));
Assert.True(renders.Skip(actionsCountA).All(r => r.Render));
Assert.Equal("qux", renders[0].Action.Item);
Assert.Equal("baz", renders[1].Action.Item);
Assert.Equal("bar", renders[2].Action.Item);
Assert.Equal("foo", renders[3].Action.Item);
Assert.Equal("fork-foo", renders[4].Action.Item);
Assert.Equal("fork-bar", renders[5].Action.Item);
Assert.Equal("fork-baz", renders[6].Action.Item);
}
finally
{
DumbAction.RenderRecords.Value =
ImmutableList<DumbAction.RenderRecord>.Empty;
}
}
// This is a regression test for:
// https://github.com/planetarium/libplanet/issues/189#issuecomment-482443607.
[Fact]
public void GetStatesOnlyDrillsDownUntilRequestedAddressesAreFound()
{
var tracker = new StoreTracker(_fx.Store);
var chain = new BlockChain<DumbAction>(
new NullPolicy<DumbAction>(),
tracker
);
Block<DumbAction> b = TestUtils.MineGenesis<DumbAction>();
chain.Append(b);
Address[] addresses = new Address[30];
for (int i = 0; i < addresses.Length; ++i)
{
var privateKey = new PrivateKey();
Address address = privateKey.PublicKey.ToAddress();
addresses[i] = address;
DumbAction[] actions =
{
new DumbAction(address, "foo"),
new DumbAction(i < 1 ? address : addresses[i - 1], "bar"),
};
Transaction<DumbAction>[] txs =
{
Transaction<DumbAction>.Create(0, privateKey, actions),
};
b = TestUtils.MineNext(b, txs);
chain.Append(b);
}
tracker.ClearLogs();
int testingDepth = addresses.Length / 2;
Address[] targetAddresses = Enumerable.Range(
testingDepth,
Math.Min(10, addresses.Length - testingDepth - 1)
).Select(i => addresses[i]).ToArray();
AddressStateMap result = chain.GetStates(targetAddresses);
string resultString = string.Join(", ", result.Keys);
string targetString = string.Join(", ", targetAddresses);
string message =
$"The result dictionary ({resultString}) does not " +
$"cover all requested addresses ({targetString}).";
foreach (Address targetAddress in targetAddresses)
{
Assert.True(result.ContainsKey(targetAddress), message);
}
var callCount = tracker.Logs.Where(
triple => triple.Item1.Equals("GetBlockStates")
).Select(triple => triple.Item2).Count();
Assert.True(testingDepth >= callCount);
}
[Fact]
public void GetStatesReturnsEarlyForNonexistentAccount()
{
var tracker = new StoreTracker(_fx.Store);
var chain = new BlockChain<DumbAction>(
new NullPolicy<DumbAction>(),
tracker
);
Block<DumbAction> b = TestUtils.MineGenesis<DumbAction>();
chain.Append(b);
for (int i = 0; i < 20; ++i)
{
b = TestUtils.MineNext(b);
chain.Append(b);
}
tracker.ClearLogs();
Address nonexistent = new PrivateKey().PublicKey.ToAddress();
AddressStateMap result = chain.GetStates(new[] { nonexistent });
Assert.False(result.ContainsKey(nonexistent));
var callCount = tracker.Logs.Where(
triple => triple.Item1.Equals("GetBlockStates")
).Select(triple => triple.Item2).Count();
Assert.True(
callCount <= 1,
$"GetBlocksStates() was called {callCount} times"
);
}
[Fact]
public void GetStatesThrowsIncompleteBlockStatesException()
{
(_, Address[] addresses, BlockChain<DumbAction> chain) =
MakeIncompleteBlockStates();
// As the store has the states for the tip (latest block),
// it shouldn't throw an exception.
Address lastAddress = addresses.Last();
AddressStateMap states = chain.GetStates(new[] { lastAddress });
Assert.NotEmpty(states);
Assert.Equal("9", states[lastAddress]);
// As the store lacks the states for blocks other than the tip,
// the following GetStates() calls should throw an exception.
foreach (Address addr in addresses.Take(addresses.Length - 1))
{
Assert.Throws<IncompleteBlockStatesException>(() =>
chain.GetStates(new[] { addr })
);
}
}
[Fact]
public void GetStatesWithCompletingStates()
{
(Address signer, Address[] addresses, BlockChain<DumbAction> chain)
= MakeIncompleteBlockStates();
string @namespace = chain.Id.ToString();
Block<DumbAction>[] blocks = chain.ToArray();
StoreTracker store = (StoreTracker)chain.Store;
HashDigest<SHA256>[] ListStateReferences(Address address)
{
Block<DumbAction> block = chain.Tip;
List<HashDigest<SHA256>> refs = new List<HashDigest<SHA256>>();
while (true)
{
HashDigest<SHA256>? sr =
store.LookupStateReference(@namespace, address, block);
if (sr is HashDigest<SHA256> reference)
{
refs.Add(reference);
block = chain.Blocks[reference];
if (block.PreviousHash is HashDigest<SHA256> prev)
{
block = chain.Blocks[prev];
continue;
}
}
break;
}
return refs.ToArray();
}
IImmutableDictionary<Address, HashDigest<SHA256>[]> stateRefs =
addresses.Select(a =>
new KeyValuePair<Address, HashDigest<SHA256>[]>(
a,
ListStateReferences(a)
)
).ToImmutableDictionary();
long txNonce = store.GetTxNonce(@namespace, signer);
store.ClearLogs();
chain.GetStates(new[] { addresses.Last() }, completeStates: true);
Assert.Empty(
store.Logs.Where(l => l.Item1 == "StoreStateReference")
);
foreach (Block<DumbAction> block in blocks.Take(blocks.Length - 1))
{
Assert.Null(store.GetBlockStates(block.Hash));
}
store.ClearLogs();
chain.GetStates(new[] { addresses[0] }, completeStates: true);
foreach (Block<DumbAction> block in blocks)
{
Assert.NotNull(store.GetBlockStates(block.Hash));
}
// Calculating and filling states should not affect state references
// or tx nonce.
Assert.Equal(txNonce, store.GetTxNonce(@namespace, signer));
foreach (Address address in addresses)
{
Assert.Equal(stateRefs[address], ListStateReferences(address));
}
}
[Fact]
public void EvaluateActions()
{
PrivateKey fromPrivateKey = new PrivateKey();
Address fromAddress = fromPrivateKey.PublicKey.ToAddress();
long blockIndex = 0;
TestEvaluateAction action = new TestEvaluateAction();
var tx1 = Transaction<TestEvaluateAction>.Create(
0,
fromPrivateKey,
new[] { action }
);
var chain = new BlockChain<TestEvaluateAction>(
new BlockPolicy<TestEvaluateAction>(),
_fx.Store
);
chain.StageTransactions(
new Dictionary<Transaction<TestEvaluateAction>, bool> { { tx1, true } }
);
chain.MineBlock(_fx.Address1);
var states = chain.GetStates(new[]
{
TestEvaluateAction.SignerKey,
TestEvaluateAction.MinerKey,
TestEvaluateAction.BlockIndexKey,
});
Assert.Equal(
states[TestEvaluateAction.SignerKey],
fromAddress.ToHex()
);
Assert.Equal(
states[TestEvaluateAction.MinerKey],
_fx.Address1.ToHex());
Assert.Equal(states[TestEvaluateAction.BlockIndexKey], blockIndex);
}
[Fact]
public void GetNextTxNonce()
{
var privateKey = new PrivateKey();
Address address = privateKey.PublicKey.ToAddress();
var actions = new[] { new DumbAction(_fx.Address1, "foo") };
Assert.Equal(0, _blockChain.GetNextTxNonce(address));
Block<DumbAction> genesis = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(genesis);
Assert.Equal(0, _blockChain.GetNextTxNonce(address));
Transaction<DumbAction>[] txsA =
{
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 0),
};
Block<DumbAction> b1 = TestUtils.MineNext(
genesis,
txsA,
null,
_blockChain.Policy.GetNextBlockDifficulty(_blockChain));
_blockChain.Append(b1);
Assert.Equal(1, _blockChain.GetNextTxNonce(address));
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 1),
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 2),
};
Dictionary<Transaction<DumbAction>, bool> toStage =
txsB.ToDictionary(tx => tx, _ => true);
_blockChain.StageTransactions(toStage);
Assert.Equal(3, _blockChain.GetNextTxNonce(address));
Transaction<DumbAction>[] txsC =
{
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 3),
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 3),
};
toStage = txsC.ToHashSet().ToDictionary(tx => tx, _ => true);
_blockChain.StageTransactions(toStage);
Assert.Equal(4, _blockChain.GetNextTxNonce(address));
}
[Fact]
public void ValidateNonce()
{
var privateKey = new PrivateKey();
var actions = new[] { new DumbAction() };
Block<DumbAction> genesis = TestUtils.MineGenesis<DumbAction>();
_blockChain.Append(genesis);
Transaction<DumbAction>[] txsA =
{
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 1),
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 0),
};
Block<DumbAction> b1 = TestUtils.MineNext(genesis, txsA);
_blockChain.ValidateNonce(b1);
Transaction<DumbAction>[] txsB =
{
_fx.MakeTransaction(actions, privateKey: privateKey, nonce: 1),
};
Block<DumbAction> b2 = TestUtils.MineNext(genesis, txsB);
Assert.Throws<InvalidTxNonceException>(() =>
_blockChain.ValidateNonce(b2));
}
[Fact]
public void MakeTransaction()
{
var privateKey = new PrivateKey();
Address address = privateKey.PublicKey.ToAddress();
var actions = new[] { new DumbAction(address, "foo") };
_blockChain.MakeTransaction(privateKey, actions);
_blockChain.MakeTransaction(privateKey, actions);
List<Transaction<DumbAction>> txs = _blockChain.Store
.IterateStagedTransactionIds()
.Select(_blockChain.Store.GetTransaction<DumbAction>)
.OrderBy(tx => tx.Nonce)
.ToList();
Assert.Equal(2, txs.Count());
var transaction = txs[0];
Assert.Equal(0, transaction.Nonce);
Assert.Equal(address, transaction.Signer);
Assert.Equal(actions, transaction.Actions);
transaction = txs[1];
Assert.Equal(1, transaction.Nonce);
Assert.Equal(address, transaction.Signer);
Assert.Equal(actions, transaction.Actions);
}
/// <summary>
/// Builds a fixture that has incomplete states for blocks other
/// than the tip, to test <c>GetStates()</c> method's
/// <c>completeStates: true</c> option and
/// <see cref="IncompleteBlockStatesException"/>.
///
/// <para>The fixture this makes has total 5 addresses (i.e., accounts;
/// these go to the second item of the returned triple) and 11 blocks
/// (these go to the third item of the returned triple). Every block
/// contains a transaction within an action that mutates one account
/// state except for the genesis block. All transactions in the fixture
/// are signed by one private key (its address goes to the first item
/// of the returned triple). The most important thing is that
/// these blocks all lack its states except for the last block (tip).
/// Overall blocks in the fixture look like:</para>
///
/// <code>
/// Index UpdatedAddresses States in Store
/// ------- ------------------ -----------------
/// 0 Absent
/// 1 addresses[0] Absent
/// 2 addresses[1] Absent
/// 3 addresses[2] Absent
/// 4 addresses[3] Absent
/// 5 addresses[4] Absent
/// 6 addresses[0] Absent