public void DuplicateOperationExceptionIsThrowsIfSourceAlreadyApplied()
{
// Arrange
var pingEvent = ToDomainEvent(new PingEvent(PingId.New));
ArrangeWorkingEventStore();
ArrangeCommandHandlerExists(new PingCommandHandler());
_testAggregate.ApplyEvents(new [] { pingEvent });
// Act + Assert
Assert.Throws <DuplicateOperationException>(async() => await Sut.PublishAsync(new PingCommand(TestId.New, pingEvent.Metadata.SourceId, PingId.New)).ConfigureAwait(false));
}
