public void ShouldUseTheProjectionToGetTheLatestVersion()
{
//Given
var events = new List <object>();
Guid id = Guid.NewGuid();
const string name = "test";
const string newName = "second";
var bus = new E05.Test.Infrastructure.Bus();
var eventsSerializer = EventsSerializer.GetEventSerializer();
var eventStore = new EventStore(bus, eventsSerializer);
var commandHandler = new InventoryCommandHandler(bus, eventStore);
var projection = new ItemsProjection(bus);
bus.Send(new CreateInventoryItem(id, name));
var lastProjection = projection.GetById(id);
//When
bus.Send(new ModifyItemName(id, newName, lastProjection.Version));
//Then
var items = projection.GetAll().ToList();
Assert.AreEqual(1, items.Count);
var kvp = items[0];
Assert.AreEqual(id, kvp.Id);
Assert.AreEqual(newName, kvp.Name);
Assert.AreEqual(1, kvp.Version);
}
public void ShouldSaveEventsOnMOdificationWithVersion()
{
//Given
Guid id = Guid.NewGuid();
const string name = "test";
const string newName = "second";
var eventStore = new EventStore();
var target = new InventoryCommandHandler(eventStore);
//When
target.Handle(new CreateInventoryItem(id, name));
target.Handle(new ModifyItemName(id, newName, 0));
//Then
Assert.AreEqual(2, eventStore.Events.Count);
Assert.AreEqual(id, eventStore.Events[0].Id);
Assert.AreEqual(0, eventStore.Events[0].Version);
var inventoryItemCreated = eventStore.Events[0].Data as InventoryItemCreated;
Assert.AreEqual(id, inventoryItemCreated.Id);
Assert.AreEqual(name, inventoryItemCreated.Name);
Assert.AreEqual(id, eventStore.Events[1].Id);
Assert.AreEqual(1, eventStore.Events[1].Version);
var itemNameModified = eventStore.Events[1].Data as ItemNameModified;
Assert.AreEqual(id, itemNameModified.Id);
Assert.AreEqual(newName, itemNameModified.NewName);
}
public void ShouldSendDataViaBus()
{
//Given
var events = new List <object>();
Guid id = Guid.NewGuid();
const string name = "test";
const string newName = "second";
var bus = new E05.Test.Infrastructure.Bus();
bus.AddListener(ob =>
{
events.Add(ob);
});
var eventStore = new EventStore(bus);
var target = new InventoryCommandHandler(bus, eventStore);
//When
bus.Send(new CreateInventoryItem(id, name));
bus.Send(new ModifyItemName(id, newName, 0));
//Then
Assert.AreEqual(4, events.Count);
var inventoryItemCreated = events[1] as InventoryItemCreated;
Assert.AreEqual(id, inventoryItemCreated.Id);
Assert.AreEqual(name, inventoryItemCreated.Name);
var itemNameModified = events[3] as ItemNameModified;
Assert.AreEqual(id, itemNameModified.Id);
Assert.AreEqual(newName, itemNameModified.NewName);
}
public void ShouldThrowExceptionWithWrongVersion()
{
//Given
Guid id = Guid.NewGuid();
const string name = "test";
const string newName = "second";
const int wrongExpectedVersion = 1;
var eventStore = new EventStore();
var target = new InventoryCommandHandler(eventStore);
//When
target.Handle(new CreateInventoryItem(id, name));
Assert.ThrowsException <ConcurrencyException>(() =>
target.Handle(new ModifyItemName(id, newName, wrongExpectedVersion)));
}
public void ShouldRehydrate()
{
//Given
Guid id = Guid.NewGuid();
const string name = "test";
var target = new EventStore();
var commandHandler = new InventoryCommandHandler(target);
commandHandler.Handle(new CreateInventoryItem(id, name));
//When
var result = target.GetById <InventoryAggregateRoot>(id);
//Then
Assert.AreEqual(id, result.Id);
}
public void ShouldGenerateEventsOnCreation()
{
//Given
Guid id = Guid.NewGuid();
const string name = "test";
var target = new InventoryCommandHandler();
//When
target.Handle(new CreateInventoryItem(id, name));
//Then
Assert.AreEqual(1, target.Events.Count);
Assert.AreEqual(id, target.Events[0].Id);
var inventoryItemCreated = target.Events[0].Data as InventoryItemCreated;
Assert.AreEqual(id, inventoryItemCreated.Id);
Assert.AreEqual(name, inventoryItemCreated.Name);
}
public void UnpredictableResult()
{
//Given
Guid id = Guid.NewGuid();
const string name = "test";
var target = new EventStore();
var commandHandler = new InventoryCommandHandler(target);
commandHandler.Handle(new CreateInventoryItem(id, name));
//When
var user01Result = target.GetById <InventoryAggregateRoot>(id);
var user02Result = target.GetById <InventoryAggregateRoot>(id);
user02Result.ChangeName("02");
user01Result.ChangeName("01");
//Then
Assert.Inconclusive("Who will be saved??");
}
public void ShouldGenerateSnapshot()
{
//Given
var events = new List <object>();
Guid id = Guid.NewGuid();
const string name = "test";
var bus = new E05.Test.Infrastructure.Bus();
var snapshotStore = new SnapshotStore();
var eventsSerializer = EventsSerializer.GetEventSerializer();
var eventStore = new EventStore(bus, eventsSerializer, snapshotStore);
var commandHandler = new InventoryCommandHandler(bus, eventStore);
var projection = new ItemsProjection(bus);
bus.Send(new CreateInventoryItem(id, name));
//When
var i = 0;
for (; i < 11; i++)
{
var lastProjection = projection.GetById(id);
bus.Send(new ModifyItemName(id, "new" + i, lastProjection.Version));
}
//Then
var items = projection.GetAll().ToList();
Assert.AreEqual(1, items.Count);
var kvp = items[0];
Assert.AreEqual(id, kvp.Id);
Assert.AreEqual("new10", kvp.Name);
Assert.AreEqual(11, kvp.Version);
var snapshotData = snapshotStore.GetSnapshot(id);
Assert.AreEqual(10, snapshotData.Version);
var snapshot = JsonConvert.DeserializeObject <InventorySnapshot>(snapshotData.Data);
Assert.AreEqual("new9", snapshot.Name);
}