public void CanObserveSingleEventType()
{
// Arrange
var commandDispatcher = new CartCommandDispatcher();
var eventStore = new CartEventStore(commandDispatcher.ObserveEventAggregate());
// Act
int eventListenedCount = 0;
SimpleEvent lastEvent = null;
eventStore.ObserveEvent <AddItemInCartCommand>()
.Subscribe(@event =>
{
eventListenedCount++;
lastEvent = @event;
});
commandDispatcher.Dispatch(new AddItemInCartCommand
{
ItemName = "Book",
UnitCost = 45
});
commandDispatcher.Dispatch(new ResetCartCommand());
// Assert
Assert.Equal(1, eventListenedCount);
Assert.IsType <AddItemInCartCommand>(lastEvent.Data);
}
public void CanObserveMultipleEventsOfTheSameType()
{
// Arrange
var commandDispatcher = new CartCommandDispatcher();
var eventStore = new CartEventStore(commandDispatcher.ObserveEventAggregate());
// Act
int eventListenedCount = 0;
eventStore.ObserveEvent()
.Subscribe(_ =>
{
eventListenedCount++;
});
commandDispatcher.Dispatch(new AddItemInCartCommand
{
ItemName = "Book",
UnitCost = 45
});
commandDispatcher.Dispatch(new AddItemInCartCommand
{
ItemName = "Book",
UnitCost = 20
});
// Assert
Assert.Equal(2, eventListenedCount);
}