public void can_only_restore_once()
{
var rm = new TestSnapShotReadModel(_aggId, GetListener, null);
// ReSharper disable once AccessToDisposedClosure
AssertEx.IsOrBecomesTrue(() => rm.Count == 10);
var state = rm.GetState();
rm.Dispose();
//create while forcing double restore
Assert.Throws <InvalidOperationException>(() => new TestSnapShotReadModel(
_aggId,
GetListener,
state,
forceDoubleRestoreError: true));
}
public void can_get_snapshot_from_read_model()
{
var rm = new TestSnapShotReadModel(_aggId, GetListener, null);
AssertEx.IsOrBecomesTrue(() => rm.Count == 10);
var snapshot = rm.GetState();
Assert.Equal(nameof(TestSnapShotReadModel), snapshot.ModelName);
Assert.Single(snapshot.Checkpoints);
Assert.Equal(_stream, snapshot.Checkpoints[0].Item1);
Assert.Equal(9, snapshot.Checkpoints[0].Item2);
var state = snapshot.State as TestSnapShotReadModel.MyState;
Assert.NotNull(state);
Assert.Equal(10, state.Count);
Assert.Equal(20, state.Sum);
}
public void can_snapshot_and_recover_read_model()
{
var rm = new TestSnapShotReadModel(_aggId, GetListener, null);
AssertEx.IsOrBecomesTrue(() => rm.Count == 10);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 20);
AppendEvents(1, _conn, _stream, 5);
AssertEx.IsOrBecomesTrue(() => rm.Count == 11, 1000);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 25);
var snap = rm.GetState();
rm.Dispose();
var rm2 = new TestSnapShotReadModel(_aggId, GetListener, snap);
AssertEx.IsOrBecomesTrue(() => rm2.Count == 11, 1000);
AssertEx.IsOrBecomesTrue(() => rm2.Sum == 25);
AppendEvents(1, _conn, _stream, 5);
AssertEx.IsOrBecomesTrue(() => rm2.Count == 12, 1000);
AssertEx.IsOrBecomesTrue(() => rm2.Sum == 30);
}
public void can_restore_state_without_checkpoints()
{
var snapshot = new ReadModelState(
nameof(TestSnapShotReadModel),
null, //no streams provided
new TestSnapShotReadModel.MyState {
Count = 10, Sum = 20
});
var rm = new TestSnapShotReadModel(_aggId, GetListener, snapshot);
AssertEx.IsOrBecomesTrue(() => rm.Count == 10);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 20);
//n.b. will not start listening because no streams are provided
//confirm not listening
AppendEvents(1, _conn, _stream, 5);
AssertEx.IsOrBecomesTrue(() => rm.Count == 10, 1000);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 20);
//can manually start
rm.Start <SnapReadModelTestAggregate>(_aggId, 9, true);
AssertEx.IsOrBecomesTrue(() => rm.Count == 11, 1000);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 25);
AppendEvents(1, _conn, _stream, 5);
AssertEx.IsOrBecomesTrue(() => rm.Count == 12, 1000);
AssertEx.IsOrBecomesTrue(() => rm.Sum == 30);
//can still get complete snapshot
var snap2 = rm.GetState();
//works as expected
var rm2 = new TestSnapShotReadModel(_aggId, GetListener, snap2);
AssertEx.IsOrBecomesTrue(() => rm2.Count == 12, 1000);
AssertEx.IsOrBecomesTrue(() => rm2.Sum == 30);
AppendEvents(1, _conn, _stream, 5);
AssertEx.IsOrBecomesTrue(() => rm2.Count == 13, 1000);
AssertEx.IsOrBecomesTrue(() => rm2.Sum == 35);
}