public void InventoryItemAggregate_CreatedSuccessfully()
{
var fixture = new MongoDBFixture();
string inventoryItemName = "TestItem";
Guid inventoryItemId = Guid.NewGuid();
int numberOfCheckIns = 2;
$"Given I have no inventory item and have registered command handlers".x(async() =>
{
fixture.CreateMongoClient();
fixture.EmptyEventStore();
fixture.EmptyProjectionStore();
fixture.ComposeHandlers();
fixture.ComposeProjectionStore();
fixture.ComposeReadModel();
});
$"When I send a command to create the inventory item".x(async() =>
{
await fixture.Mediator.Send(new CreateInventoryItem(inventoryItemId, inventoryItemName));
});
$"Then a created event is created".x(async() =>
{
var events = await fixture.EventStorage.GetEventsForAggregate(inventoryItemId);
events.Count.ShouldBe(1);
events.First().Type.ShouldBe(typeof(InventoryItemCreated).FullName);
});
$"And then when I check in items to the inventory item".x(async() =>
{
await fixture.Mediator.Send(new CheckInItemsToInventory(inventoryItemId, numberOfCheckIns));
});
$"Another inventory item is not created and a new check-in event is created".x(async() =>
{
var events = await fixture.EventStorage.GetEventsForAggregate(inventoryItemId);
events.Count.ShouldBe(2);
events.Where(e => e.Type == typeof(InventoryItemCreated).FullName).Count().ShouldBe(1);
});
$"And items are checked into our inventory item".x(async() =>
{
var detailsReadModel = await fixture.InventoryReadModel.GetInventoryItemDetails(inventoryItemId);
detailsReadModel.Name.ShouldBe(inventoryItemName);
detailsReadModel.CurrentCount.ShouldBe(numberOfCheckIns);
});
$"And the projection stores were not used".x(async() =>
{
var projectionDetailsStore = await fixture.InventoryItemDetailsProjectionStore.Get(inventoryItemId.ToString());
projectionDetailsStore.ShouldBeNull();
var projectionStore = await fixture.InventoryItemListProjectionStore.Get(""); // Gets all items
projectionStore.ShouldBeNull();
});
}
public void InventoryItemReadModel_UsesProjectionStore_WhenProjectionHandlersAreRunning()
{
var fixture = new MongoDBFixture();
string inventoryItemName = "TestItem";
Guid inventoryItemId = Guid.NewGuid();
int numberOfCheckIns = 2;
$"Given I have no inventory item and have registered command and projection handlers".x(async() =>
{
fixture.CreateMongoClient();
fixture.EmptyEventStore();
fixture.EmptyProjectionStore();
fixture.ComposeHandlers();
fixture.ComposeProjectionStore();
fixture.ComposeReadModel();
fixture.ComposeProjectionHandlers();
});
$"When I send a command to create the inventory item".x(async() =>
{
await fixture.Mediator.Send(new CreateInventoryItem(inventoryItemId, inventoryItemName));
});
$"Then a created event is created".x(async() =>
{
var events = await fixture.EventStorage.GetEventsForAggregate(inventoryItemId);
events.Count.ShouldBe(1);
events.First().Type.ShouldBe(typeof(InventoryItemCreated).FullName);
});
$"And then when I check in items to the inventory item".x(async() =>
{
await fixture.Mediator.Send(new CheckInItemsToInventory(inventoryItemId, numberOfCheckIns));
});
$"And we wait for our projection handlers to complete".x(async() =>
{
Thread.Sleep(3000);
});
$"Another inventory item is not created and a new check-in event is created".x(async() =>
{
var events = await fixture.EventStorage.GetEventsForAggregate(inventoryItemId);
events.Count.ShouldBe(2);
events.Where(e => e.Type == typeof(InventoryItemCreated).FullName).Count().ShouldBe(1);
});
$"And items are checked into our inventory item".x(async() =>
{
var detailsReadModel = await fixture.InventoryReadModel.GetInventoryItemDetails(inventoryItemId);
detailsReadModel.Name.ShouldBe(inventoryItemName);
detailsReadModel.CurrentCount.ShouldBe(numberOfCheckIns);
});
$"And the projection stores are populated".x(async() =>
{
var projectionDetailsStore = await fixture.InventoryItemDetailsProjectionStore.Get(inventoryItemId.ToString());
projectionDetailsStore.ShouldNotBeNull();
var projectionStore = await fixture.InventoryItemListProjectionStore.Get(""); // Gets all items
projectionStore.ShouldNotBeNull();
});
$"Then if the events store goes down".x(async() =>
{
fixture.Mediator.ClearHandlers();
fixture.EventStorage = null;
fixture.ComposeHandlers();
fixture.ComposeReadModel();
});
$"Our read models will still return from the projection store".x(async() =>
{
var detailsReadModel = await fixture.InventoryReadModel.GetInventoryItemDetails(inventoryItemId);
detailsReadModel.Name.ShouldBe(inventoryItemName);
detailsReadModel.CurrentCount.ShouldBe(numberOfCheckIns);
});
}