public async Task Handle_is_idempotent(
Guid streamId,
long startVersion,
Event1[] events,
string commandId,
TracingProperties tracingProperties,
MessageBusDouble eventBus)
{
// Arrange
var brokenEventBus = new MessageBusDouble(errors: 1);
EntityEventStore <State1> eventStore = GenerateEventStore <State1>(brokenEventBus);
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion, events));
EntityFlushEventsCommandExecutor sut = GenerateSut(eventBus);
var command = new FlushEvents(TypeResolver.ResolveTypeName <State1>(), streamId);
var message = new Message(id: commandId, data: command, tracingProperties);
// Act
await sut.Handle(message);
await sut.Handle(message);
// Assert
eventBus.Calls.Should().BeEquivalentTo(brokenEventBus.Calls);
}
public async Task sut_supports_multiple_state_types_having_same_stream_id(
IMessageBus eventBus, Guid streamId, Event1 evt1, Event2 evt2)
{
// Arrange
EntityEventStore <State1> store1 = GenerateEventStore <State1>(eventBus);
EntityEventStore <State2> store2 = GenerateEventStore <State2>(eventBus);
int startVersion = 1;
// Act
Func <Task> action = async() =>
{
await store1.CollectEvents(streamId, startVersion, new[] { evt1 });
await store2.CollectEvents(streamId, startVersion, new[] { evt2 });
};
// Assert
await action.Should().NotThrowAsync();
IEnumerable <object> actual1 = await store1.QueryEvents(streamId, fromVersion : 1);
actual1.Should().BeEquivalentTo(evt1);
IEnumerable <object> actual2 = await store2.QueryEvents(streamId, fromVersion : 1);
actual2.Should().BeEquivalentTo(evt2);
}
public async Task sut_sends_flush_commands_for_streams_containing_cold_pending_events(
Guid streamId, long startVersion, Event1[] events, MessageBusDouble commandBus)
{
// Arrange
var eventBus = new MessageBusDouble(errors: 1);
EntityEventStore <State1> eventStore = GenerateEventStore <State1>(eventBus);
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion, events));
var sut = new EntityPendingEventScanner(ContextFactory, commandBus);
// Act
await sut.ScanPendingEvents();
// Assert
commandBus.Calls.Should().ContainSingle();
(ImmutableArray <Message> messages, string partitionKey) = commandBus.Calls.Single();
messages.Should().ContainSingle();
Message message = messages.Single();
Guid.TryParse(message.Id, out Guid id).Should().BeTrue();
id.Should().NotBeEmpty();
message.Data.Should().BeOfType <FlushEvents>();
message.Data.Should().BeEquivalentTo(new
{
StateType = TypeResolver.ResolveTypeName <State1>(),
StreamId = streamId,
});
partitionKey.Should().Be($"{streamId}");
}
public async Task sut_does_not_send_flush_command_for_streams_containing_only_hot_pending_events(
Guid streamId, long startVersion, Event1[] events, MessageBusDouble commandBus)
{
// Arrange
var eventBus = new MessageBusDouble(errors: 1);
EntityEventStore <State1> eventStore = GenerateEventStore <State1>(eventBus);
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion, events));
var minimumPendingTime = TimeSpan.FromSeconds(1);
var sut = new EntityPendingEventScanner(ContextFactory, commandBus, minimumPendingTime);
// Act
await sut.ScanPendingEvents();
// Assert
commandBus.Calls.Should().BeEmpty();
}
public async Task sut_distincts_streams(
Guid streamId, long startVersion, Event1[] events, MessageBusDouble commandBus)
{
// Arrange
var eventBus = new MessageBusDouble(errors: 2);
EntityEventStore <State1> eventStore = GenerateEventStore <State1>(eventBus);
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion, events));
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion + events.Length, events));
var sut = new EntityPendingEventScanner(ContextFactory, commandBus);
// Act
await sut.ScanPendingEvents();
// Assert
commandBus.Calls.Should().ContainSingle();
}
public async Task sut_sets_tracing_properties_correctly(
Guid streamId, long startVersion, Event1[] events, MessageBusDouble commandBus)
{
// Arrange
var eventBus = new MessageBusDouble(errors: 1);
EntityEventStore <State1> eventStore = GenerateEventStore <State1>(eventBus);
await TryCatchIgnore(() => eventStore.CollectEvents(streamId, startVersion, events));
var sut = new EntityPendingEventScanner(ContextFactory, commandBus);
// Act
await sut.ScanPendingEvents();
// Assert
TracingProperties actual = commandBus.Calls.Single().messages.Single().TracingProperties;
actual.OperationId.Should().NotBeNullOrWhiteSpace();
actual.Contributor.Should().Be("Loom.EventSourcing.EntityFrameworkCore.EntityPendingEventScanner");
actual.ParentId.Should().BeNull();
}