public void TestSmoke()
{
string testFolder = TestUtils.PrepareTestFolder(GetType(), nameof(TestSmoke), "*.db");
using (SQLiteBlockchainStorage storage = SQLiteBlockchainStorage.Open(testFolder))
{
Assert.Null(storage.FindBlockByHash(GenesisBlock.Hash));
Assert.Null(storage.FindFirst(new BlockSelector
{
IsInBestHeaderChain = true,
IsInBestBlockChain = true,
Order = BlockSelector.SortOrder.Height,
Direction = BlockSelector.SortDirection.Desc
}));
Assert.That(storage.Find(new BlockSelector
{
Heights = new int[] {0, 1},
IsInBestHeaderChain = true,
Order = BlockSelector.SortOrder.Height,
Direction = BlockSelector.SortDirection.Asc
}, 100).Select(b => b.Height).ToList(), Is.EqualTo(new int[] {}));
StoredBlockBuilder blockBuilder = new StoredBlockBuilder(GenesisBlock.GetHeader());
blockBuilder.Height = 0;
blockBuilder.IsInBestHeaderChain = true;
blockBuilder.IsInBestBlockChain = true;
storage.AddBlock(blockBuilder.Build());
}
using (SQLiteBlockchainStorage storage = SQLiteBlockchainStorage.Open(testFolder))
{
StoredBlock block = storage.FindBlockByHash(GenesisBlock.Hash);
Assert.NotNull(block);
Assert.That(block.Hash, Is.EqualTo(GenesisBlock.Hash));
block = storage.FindFirst(new BlockSelector
{
IsInBestHeaderChain = true,
IsInBestBlockChain = true,
Order = BlockSelector.SortOrder.Height,
Direction = BlockSelector.SortDirection.Desc
});
Assert.NotNull(block);
Assert.That(block.Hash, Is.EqualTo(GenesisBlock.Hash));
Assert.That(storage.Find(new BlockSelector
{
Heights = new int[] {0, 1},
IsInBestHeaderChain = true,
Order = BlockSelector.SortOrder.Height,
Direction = BlockSelector.SortDirection.Asc
}, 100).Select(b => b.Height).ToList(), Is.EqualTo(new int[] {0}));
}
}
private StoredBlock SetIsInBestHeaderChain(StoredBlock block, bool val)
{
StoredBlockBuilder builder = new StoredBlockBuilder(block);
builder.IsInBestHeaderChain = val;
StoredBlock newBlock = builder.Build();
currentState = currentState.Update(block, newBlock);
return newBlock;
}
private void AddGenesisBlock()
{
//todo: use network specific genesis block
StoredBlockBuilder blockBuilder = new StoredBlockBuilder(GenesisBlock.GetHeader());
double blockWork = DifficultyUtils.DifficultyTargetToWork(DifficultyUtils.NBitsToTarget(blockBuilder.Header.NBits));
blockBuilder.Height = 0;
blockBuilder.TotalWork = blockWork;
blockBuilder.IsInBestBlockChain = true;
blockBuilder.IsInBestHeaderChain = true;
StoredBlock genesisBlock = blockBuilder.Build();
//todo: review transaction usage in this class
storage.AddBlock(genesisBlock);
//todo: use network specific genesis block
storage.AddBlockContent(genesisBlock.Hash, GenesisBlock.Raw);
}
public void TestTransactionsWithCache()
{
string testFolder = TestUtils.PrepareTestFolder(GetType(), nameof(TestTransactionsWithCache), "*.db");
using (SQLiteBlockchainStorage storage = SQLiteBlockchainStorage.Open(testFolder))
{
CachingBlockchainStorage cache = new CachingBlockchainStorage(storage);
StoredBlockBuilder blockBuilder = new StoredBlockBuilder(GenesisBlock.GetHeader());
blockBuilder.IsInBestHeaderChain = true;
blockBuilder.IsInBestBlockChain = false;
StoredBlock block = blockBuilder.Build();
Assert.Throws<InvalidOperationException>(() => cache.AddBlock(block));
using (new TransactionScope(TransactionScopeOption.Required))
{
cache.AddBlock(block);
Assert.That(cache.FindBlockByHash(block.Hash), Is.Not.Null);
Assert.That(cache.FindSubchain(block.Hash, 10), Is.Not.Null);
}
Assert.That(cache.FindBlockByHash(block.Hash), Is.Null);
Assert.That(cache.FindSubchain(block.Hash, 10), Is.Null);
using (var tx = new TransactionScope(TransactionScopeOption.Required))
{
cache.AddBlock(block);
tx.Complete();
}
Assert.That(cache.FindBlockByHash(block.Hash), Is.Not.Null);
Assert.That(cache.FindSubchain(block.Hash, 10), Is.Not.Null);
blockBuilder = new StoredBlockBuilder(block);
blockBuilder.IsInBestBlockChain = true;
block = blockBuilder.Build();
Assert.Throws<InvalidOperationException>(() => cache.UpdateBlock(block));
using (new TransactionScope(TransactionScopeOption.Required))
{
cache.UpdateBlock(block);
Assert.True(cache.FindBlockByHash(block.Hash).IsInBestBlockChain);
Assert.True(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).IsInBestBlockChain);
}
Assert.False(cache.FindBlockByHash(block.Hash).IsInBestBlockChain);
Assert.False(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).IsInBestBlockChain);
using (var tx = new TransactionScope(TransactionScopeOption.Required))
{
cache.UpdateBlock(block);
tx.Complete();
}
Assert.True(cache.FindBlockByHash(block.Hash).IsInBestBlockChain);
Assert.True(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).IsInBestBlockChain);
Assert.Throws<InvalidOperationException>(() => cache.AddBlockContent(block.Hash, GenesisBlock.Raw));
using (new TransactionScope(TransactionScopeOption.Required))
{
cache.AddBlockContent(block.Hash, GenesisBlock.Raw);
Assert.True(cache.FindBlockByHash(block.Hash).HasContent);
Assert.True(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).HasContent);
}
Assert.False(cache.FindBlockByHash(block.Hash).HasContent);
Assert.False(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).HasContent);
using (var tx = new TransactionScope(TransactionScopeOption.Required))
{
cache.AddBlockContent(block.Hash, GenesisBlock.Raw);
tx.Complete();
}
Assert.True(cache.FindBlockByHash(block.Hash).HasContent);
Assert.True(cache.FindSubchain(block.Hash, 10).GetBlockByOffset(0).HasContent);
}
}
/// <summary>
/// Returns a copy of this block with the <see cref="Height"/> and <see cref="TotalWork"/> properties based on the given parent block.
/// </summary>
/// <param name="parentBlock">The parent block.</param>
public StoredBlock AppendAfter(StoredBlock parentBlock)
{
double blockWork = DifficultyUtils.DifficultyTargetToWork(DifficultyUtils.NBitsToTarget(Header.NBits));
StoredBlockBuilder builder = new StoredBlockBuilder(this);
builder.Height = parentBlock.Height + 1;
builder.TotalWork = parentBlock.TotalWork + blockWork;
return builder.Build();
}
/// <summary>
/// Returns a copy of this block with the <see cref="HasContent"/> flag set.
/// </summary>
/// <returns></returns>
public StoredBlock AddContent()
{
StoredBlockBuilder builder = new StoredBlockBuilder(this);
builder.HasContent = true;
return builder.Build();
}