public async Task TestWriteVersion1ToEventStore()
{
A.CallTo(() => _eventStoreApi.GetAggregatesAtLatestVersion(A <Guid> .That.IsEqualTo(_datasetId))).Returns(
new List <Aggregate <Feature <LineString, ExampleAttributes> > >()
);
var events = new List <Event <FeatureDiff> >();
A.CallTo(() => _eventStoreApi.SaveEvent(A <Guid> .That.IsEqualTo(_datasetId), A <Event <FeatureDiff> > ._))
.Invokes((Guid id, Event <FeatureDiff> x) => events.Add(x));
await _converter.UpdateDataset(_datasetId, _version1);
Assert.AreEqual(6, events.Count());
}
public async Task TestExistingFeature()
{
var existingAggregate = new Aggregate <Feature <Polygon, ExampleAttributes> >()
{
Data = new Feature <Polygon, ExampleAttributes>()
{
Geometry = GetGeometry <Polygon>("POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))"),
Attributes = new ExampleAttributes()
{
Id = 2, Name = "Feature 2"
}
},
Id = Guid.NewGuid(),
Version = 1
};
A.CallTo(() => _eventStoreApi.GetAggregatesAtLatestVersion(A <Guid> .That.IsEqualTo(_datasetId))).Returns(
new List <Aggregate <Feature <Polygon, ExampleAttributes> > >()
{
existingAggregate
});
await _readProjectionWriterWithFilter.CreateReadProjection(_datasetId);
A.CallTo(() => _databaseEngine.Upsert(
A <string> .That.IsEqualTo(_datasetId.ToString()),
A <IEnumerable <Cell> > .That.Matches(c => CheckCellCreation(c, existingAggregate.Data, existingAggregate.Id)))).MustHaveHappenedOnceExactly();
}
public async Task UpdateDataset(Guid datasetId, IEnumerable <Feature <TGeometry, TAttributes> > newFeatures)
{
//Get current version (version n) of the dataset
var oldFeatures = await _eventStoreApi.GetAggregatesAtLatestVersion(datasetId);
//Use the new and old features to generate a list of pairs with corresponding action
var changes = await _changeDetector.FindChanges(oldFeatures, newFeatures);
//Create a diff for each pair that is changed, created, or deleted
var events = GetDiffs(changes).ToList();
await Task.WhenAll(events.Select(@event => StoreEvent(datasetId, @event)).ToArray());
}