public void A_merge_which_is_allowed_succeeds()
{
var aggregateId = Guid.NewGuid();
//Set up existing aggregate state - will be at aggregate version 3
var existingAggregateEvents = new List<Event>();
existingAggregateEvents.Add(new InventoryItemCreated(aggregateId, "A Name"));
existingAggregateEvents.Add(new InventoryItemReceivedIntoStock(aggregateId, 100));
existingAggregateEvents.Add(new InventoryItemRenamed(aggregateId, "Some other name"));
_eventStore.SaveEvents(aggregateId, existingAggregateEvents, 0);
//Command has an earlier expected version than the current aggregate version
var command = new DeactivateInventoryItem(aggregateId, 1);
var specificCommandHandler = new DeactivateInventoryItemHandler(_repository);
var mergingChain = new MergingContextCommitHandler<DeactivateInventoryItem>(specificCommandHandler,
_eventStore, _allowedMerges);
mergingChain.Handle(command, new CommandExecutionContext());
var newAggregate = _repository.GetById<InventoryItem>(aggregateId);
Assert.AreEqual(4, newAggregate.AggregateVersion);
}
public void A_merge_which_is_not_allowed_throws_a_RealConcurrencyException()
{
var aggregateId = Guid.NewGuid();
//Set up existing aggregate state - will be at aggregate version 4
var existingAggregateEvents = new List<Event>();
existingAggregateEvents.Add(new InventoryItemCreated(aggregateId, "A Name"));
existingAggregateEvents.Add(new InventoryItemReceivedIntoStock(aggregateId, 100));
existingAggregateEvents.Add(new InventoryItemDeactivated(aggregateId));
_eventStore.SaveEvents(aggregateId, existingAggregateEvents, 0);
//Command has an earlier expected version and conflicts with changes between expected and actual version
var command = new RenameInventoryItem(aggregateId, "A new name", 1);
var specificCommandHandler = new RenameInventoryItemHandler(_repository);
var mergingChain = new MergingContextCommitHandler<RenameInventoryItem>(specificCommandHandler, _eventStore,
_allowedMerges);
Exception caughtException = new ThereWasNoExceptionButOneWasExpectedException();
try
{
mergingChain.Handle(command, new CommandExecutionContext());
} catch (Exception e)
{
caughtException = e;
}
Assert.That(caughtException is RealConcurrencyException);
}
