public async Task Recursive_scheduling_is_supported_when_scheduled_command_preconditions_are_satisfied_in_process()
{
var scenarioBuilder = CreateScenarioBuilder();
var scenario = scenarioBuilder.Prepare();
var customer = new CustomerAccount();
customer.Apply(new ChangeEmailAddress(Any.Email()));
var scheduler = scenarioBuilder.Configuration.CommandScheduler <Order>();
var orderId = Any.Guid();
await scheduler.Schedule(
orderId,
new CreateOrder(Any.FullName())
{
AggregateId = orderId
}, deliveryDependsOn : customer.Events().First());
await Task.Delay(100);
var order = scenario.GetLatest <Order>(orderId);
order.Should().BeNull();
// act
Console.WriteLine("SAVING");
scenario.Save(customer);
order = scenario.GetLatest <Order>(orderId);
order.Should().NotBeNull();
}
public async Task When_a_command_is_scheduled_but_the_event_that_triggered_it_was_not_successfully_written_then_the_command_is_not_applied()
{
// create a customer account
var customer = new CustomerAccount(Any.Guid())
.Apply(new ChangeEmailAddress(Any.Email()));
await Save(customer);
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = customer.Id
});
// act
// cancel the order but don't save it
order.Apply(new Cancel());
// assert
// verify that the customer did not receive the scheduled NotifyOrderCanceled command
customer = await Get <CustomerAccount>(customer.Id);
customer.Events().Last().Should().BeOfType <CustomerAccount.EmailAddressChanged>();
using (var db = CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == customer.Id)
.Should()
.ContainSingle(c => c.AppliedTime == null);
}
}
public async Task Snapshotting_can_be_bypassed()
{
var snapshotRepository = new InMemorySnapshotRepository();
Configuration.Current.UseDependency <ISnapshotRepository>(_ => snapshotRepository);
var account = new CustomerAccount()
.Apply(new ChangeEmailAddress(Any.Email()))
.Apply(new RequestSpam())
.Apply(new SendMarketingEmail())
.Apply(new SendOrderConfirmationEmail(Any.AlphanumericString(8, 8)));
var eventSourcedRepository = CreateRepository <CustomerAccount>();
await eventSourcedRepository.Save(account);
await snapshotRepository.SaveSnapshot(account);
// act
account = await eventSourcedRepository.GetLatest(account.Id);
// assert
account.Events().Count()
.Should()
.Be(4);
}
public async Task Accessing_event_history_from_an_aggregate_instantiated_using_a_snapshot_throws()
{
var customerAccount = new CustomerAccount(new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 10,
EmailAddress = Any.Email()
});
Action getEvents = () => customerAccount.Events();
getEvents.ShouldThrow <InvalidOperationException>()
.And
.Message
.Should()
.Contain("Aggregate was sourced from a snapshot, so event history is unavailable.");
}
public void Accessing_event_history_from_an_aggregate_instantiated_using_a_snapshot_throws()
{
// arrange
var account = new CustomerAccount()
.Apply(new ChangeEmailAddress(Any.Email()));
account.ConfirmSave();
var snapshot = account
.CreateSnapshot();
snapshot.Version = 10;
account = new CustomerAccount(snapshot);
// act
Action getEvents = () => account.Events();
// assert
getEvents.ShouldThrow <InvalidOperationException>()
.And
.Message
.Should()
.Contain("Aggregate was sourced from a snapshot, so event history is unavailable.");
}
public async Task When_a_command_is_scheduled_but_the_event_that_triggered_it_was_not_successfully_written_then_the_command_is_not_applied()
{
VirtualClock.Start();
// create a customer account
var customer = new CustomerAccount(Any.Guid())
.Apply(new ChangeEmailAddress(Any.Email()));
await accountRepository.Save(customer);
var order = new Order(new CreateOrder(Any.FullName())
{
CustomerId = customer.Id
});
// act
// cancel the order but don't save it
order.Apply(new Cancel());
// assert
// verify that the customer did not receive the scheduled NotifyOrderCanceled command
customer = await accountRepository.GetLatest(customer.Id);
customer.Events().Last().Should().BeOfType<CustomerAccount.EmailAddressChanged>();
using (var db = new CommandSchedulerDbContext())
{
db.ScheduledCommands
.Where(c => c.AggregateId == customer.Id)
.Should()
.ContainSingle(c => c.AppliedTime == null &&
c.DueTime == null);
}
}
public async Task A_scheduled_command_can_schedule_other_commands()
{
// ARRANGE
var email = Any.Email();
Console.WriteLine(new { clockName, email });
var account = new CustomerAccount()
.Apply(new ChangeEmailAddress(email))
.Apply(new SendMarketingEmailOn(Clock.Now().AddDays(1)))
.Apply(new RequestSpam());
await accountRepository.Save(account);
// ACT
var result = await clockTrigger.AdvanceClock(clockName, TimeSpan.FromDays(10));
Console.WriteLine(result.ToLogString());
await SchedulerWorkComplete();
// ASSERT
account = await accountRepository.GetLatest(account.Id);
Console.WriteLine(account.Events()
.Select(e => string.Format("{0}: {1}{2}\n",
e.EventName(),
e.Timestamp,
e.IfTypeIs<IScheduledCommand<CustomerAccount>>()
.Then(s => " --> DUE: " + s.DueTime)
.ElseDefault()))
.ToLogString());
account.Events()
.OfType<CommandScheduled<CustomerAccount>>()
.Count()
.Should()
.Be(3);
account.Events()
.Last()
.Should()
.BeOfType<CommandScheduled<CustomerAccount>>();
}
public async Task Accessing_event_history_from_an_aggregate_instantiated_using_a_snapshot_throws()
{
var customerAccount = new CustomerAccount(new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 10,
EmailAddress = Any.Email()
});
Action getEvents = ()=> customerAccount.Events();
getEvents.ShouldThrow<InvalidOperationException>()
.And
.Message
.Should()
.Contain("Aggregate was sourced from a snapshot, so event history is unavailable.");
}