public void AggregateStream_ShouldReturnSpecifiedVersionOfTheStream()
{
var streamId = Guid.NewGuid();
var userCreated = new UserCreated(streamId, "John Doe");
var userNameUpdated = new UserNameUpdated(streamId, "Adam Smith");
var userNameUpdatedAgain = new UserNameUpdated(streamId, "Michael Newman");
eventStore.AppendEvent <User>(streamId, userCreated);
eventStore.AppendEvent <User>(streamId, userNameUpdated);
eventStore.AppendEvent <User>(streamId, userNameUpdatedAgain);
var aggregateAtVersion1 = eventStore.AggregateStream <User>(streamId, 1);
aggregateAtVersion1.Id.Should().Be(streamId);
aggregateAtVersion1.Name.Should().Be(userCreated.UserName);
aggregateAtVersion1.Version.Should().Be(1);
var aggregateAtVersion2 = eventStore.AggregateStream <User>(streamId, 2);
aggregateAtVersion2.Id.Should().Be(streamId);
aggregateAtVersion2.Name.Should().Be(userNameUpdated.UserName);
aggregateAtVersion2.Version.Should().Be(2);
var aggregateAtVersion3 = eventStore.AggregateStream <User>(streamId, 3);
aggregateAtVersion3.Id.Should().Be(streamId);
aggregateAtVersion3.Name.Should().Be(userNameUpdatedAgain.UserName);
aggregateAtVersion3.Version.Should().Be(3);
}
public void ChangeName(string name)
{
var @event = new UserNameUpdated(Id, name);
Enqueue(@event);
Apply(@event);
}
void Apply(UserNameUpdated @event)
{
databaseConnection.Execute(
@"UPDATE UserDashboards
SET UserName = @UserName
WHERE Id = @UserId",
@event
);
}
public void AggregateStream_ShouldReturnObjectWithStateBasedOnEvents()
{
var streamId = Guid.NewGuid();
var userCreated = new UserCreated(streamId, "John Doe");
var userNameUpdated = new UserNameUpdated(streamId, "Adam Smith");
eventStore.AppendEvent <User>(streamId, userCreated);
eventStore.AppendEvent <User>(streamId, userNameUpdated);
var aggregate = eventStore.AggregateStream <User>(streamId);
aggregate.Id.Should().Be(streamId);
aggregate.Name.Should().Be(userNameUpdated.UserName);
aggregate.Version.Should().Be(2);
}
public void GetEvents_ShouldReturnAppendedEvents()
{
var streamId = Guid.NewGuid();
var userCreated = new UserCreated(streamId, "John Doe");
var userNameUpdated = new UserNameUpdated(streamId, "Adam Smith");
eventStore.AppendEvent <User>(streamId, userCreated);
eventStore.AppendEvent <User>(streamId, userNameUpdated);
var events = eventStore.GetEvents(streamId);
events.Should().HaveCount(2);
events.OfType <UserCreated>().Should().Contain(
e => e.UserId == userCreated.UserId && e.UserName == userCreated.UserName);
events.OfType <UserNameUpdated>().Should().Contain(
e => e.UserId == userNameUpdated.UserId && e.UserName == userNameUpdated.UserName);
}
private void Apply(UserNameUpdated @event)
{
Name = @event.UserName;
}
private void Apply(UserNameUpdated @event)
{
throw new NotImplementedException("TODO");
}
private void Apply(UserDashboard item, UserNameUpdated @event)
{
item.UserName = @event.UserName;
}
public void Apply(UserNameUpdated @event)
{
Name = @event.UserName;
}
public void Apply(UserNameUpdated @event, UserDashboard item)
{
item.UserName = @event.UserName;
}
