public async Task Checkpoint_is_notified_but_not_stored_on_project()
{
var expected = new AllStreamPosition(10);
AllStreamPosition projected = AllStreamPosition.None;
AllStreamPosition notified = AllStreamPosition.None;
using (var cpStore = Util.BuildCheckpointStore())
using (var sut = new CheckpointProjection(
Util.Projection(m => projected = m.Checkpoint),
cpStore,
p => notified = p))
{
await sut.Project(new Envelope(expected, null));
projected.ShouldBe(expected);
notified.ShouldBe(expected);
cpStore.Read().ShouldBeNull();
}
}
public async Task Only_first_messages_before_error_are_processed()
{
var expected = new AllStreamPosition(3);
AllStreamPosition lastCheckpoint = AllStreamPosition.None;
using (var sut = new SuspendableProjection(
Util.Projection(m =>
{
lastCheckpoint = m.Checkpoint;
if (m.Checkpoint == expected)
{
throw new Exception("test");
}
})))
{
for (int i = 1; i < 5; i++)
{
await sut.Project(new Envelope(new AllStreamPosition(i), null));
}
}
lastCheckpoint.ShouldBe(expected);
}
public async Task Commit_happens_only_after_nth_attempt(int n)
{
AllStreamPosition projected = AllStreamPosition.None;
bool committed = false;
using (var sut = new CommitNthProjection(
Util.Projection(m => projected = m.Checkpoint, () => committed = true),
n))
{
for (int i = 0; i < n; i++)
{
var expected = new AllStreamPosition(i);
await sut.Project(new Envelope(expected, null));
projected.ShouldBe(expected);
if (i < n - 1)
{
committed.ShouldBeFalse();
}
}
}
committed.ShouldBeTrue();
}