protected async Task Given_No_Snapshots_For_A_Stream_When_Reading_A_Snapshot_Then_An_Error_Is_Raised(IEventStoreProvider eventStoreProvider)
{
// Arrange
string eventStreamId = Guid.NewGuid().ToEventStreamIdFormattedString();
// Act
// Assert
await AssertExtensions.ThrowsAsync <EventStreamNotFoundException>(
async() => await eventStoreProvider.ReadSnapshotAsync(eventStreamId).ConfigureAwait(false)).ConfigureAwait(false);
}
protected async Task Given_A_Valid_Snapshot_When_The_Snapshot_Is_Added_Then_The_Snapshot_Can_Be_Read_And_The_Retrieved_Snapshot_Has_The_Correct_Metadata(IEventStoreProvider eventStoreProvider)
{
// Arrange
string eventStreamId = Guid.NewGuid().ToEventStreamIdFormattedString();
string snapshotStreamId = string.Format(CultureInfo.InvariantCulture, "{0}-snapshot", eventStreamId);
Guid snapshotId = Guid.NewGuid();
const int streamRevision = 3;
// Act
eventStoreProvider.AppendEvents(eventStreamId, new object(), new object(), new object());
await eventStoreProvider.CommitEventsAsync(eventStreamId, ExpectedStreamRevision.New).ConfigureAwait(false);
EventStoreSnapshot eventStoreSnapshotToBeWritten = new EventStoreSnapshot(snapshotId, streamRevision, new object());
await eventStoreProvider.AddSnapshotAsync(eventStreamId, snapshotStreamId, eventStoreSnapshotToBeWritten).ConfigureAwait(false);
EventStoreSnapshot eventStoreSnapshotThatWasRead = await eventStoreProvider.ReadSnapshotAsync(snapshotStreamId).ConfigureAwait(false);
// Assert
Assert.NotNull(eventStoreSnapshotThatWasRead);
Assert.Equal(snapshotId, eventStoreSnapshotThatWasRead.SnapshotId);
Assert.Equal(streamRevision, eventStoreSnapshotThatWasRead.StreamRevision);
Assert.Equal(3, eventStoreSnapshotThatWasRead.Headers.Count);
}
