public void TestUnsubscribe()
{
// initialize ChainStateMonitor
using (var chainStateMonitor = new ChainStateMonitor(LogManager.CreateNullLogger()))
using (chainStateMonitor.Start())
{
try
{
// mock IChainStateVisitor
var visitor = new Mock <IChainStateVisitor>();
// keep track of BeginBlock calls
var wasVisited = false;
var visitEvent = new AutoResetEvent(false);
visitor.Setup(x => x.BeginBlock(It.IsAny <ChainedHeader>())).Callback(() => visitEvent.Set());
// subscribe visitor
using (var subscription = chainStateMonitor.Subscribe(visitor.Object))
{
// verify no BeginBlock calls
wasVisited = visitEvent.WaitOne(10);
Assert.IsFalse(wasVisited);
// call BeginBlock
chainStateMonitor.BeginBlock(null);
// verify BeginBlock call
wasVisited = visitEvent.WaitOne(100);
Assert.IsTrue(wasVisited);
}
// call BeginBlock, after unsubscribe
chainStateMonitor.BeginBlock(null);
// verify no additional BeginBlock call
wasVisited = visitEvent.WaitOne(10);
Assert.IsFalse(wasVisited);
}
finally
{
// wait for monitor
chainStateMonitor.CompleteAdding();
chainStateMonitor.WaitToComplete();
}
}
}
public ChainStateBuilder(ChainBuilder chain, Utxo parentUtxo, Logger logger, IKernel kernel, IBlockchainRules rules, BlockHeaderCache blockHeaderCache, BlockCache blockCache, SpentTransactionsCache spentTransactionsCache, SpentOutputsCache spentOutputsCache)
{
this.logger = logger;
this.sha256 = new SHA256Managed();
this.rules = rules;
this.blockHeaderCache = blockHeaderCache;
this.blockCache = blockCache;
this.spentTransactionsCache = spentTransactionsCache;
this.spentOutputsCache = spentOutputsCache;
this.chainStateMonitor = new ChainStateMonitor(this.logger);
this.scriptValidator = new ScriptValidator(this.logger, this.rules);
this.chainStateMonitor.Subscribe(this.scriptValidator);
this.chain = chain;
this.chainStateBuilderStorage = kernel.Get <IChainStateBuilderStorage>(new ConstructorArgument("parentUtxo", parentUtxo.Storage));
this.spentTransactions = ImmutableList.CreateBuilder <KeyValuePair <UInt256, SpentTx> >();
this.spentOutputs = ImmutableList.CreateBuilder <KeyValuePair <TxOutputKey, TxOutput> >();
this.stats = new BuilderStats();
}
