public async ThreadingTask CallsRepositoryWithConflictResolvers()
{
var timeEntry = new MockTimeEntry();
Repository.BatchUpdate(null, null, null)
.ReturnsForAnyArgs(Observable.Return(new[] { new CreateResult <IDatabaseTimeEntry>(timeEntry) }));
await TimeEntriesSource.Create(timeEntry);
Repository.Received().BatchUpdate(
Arg.Any <IEnumerable <(long, IDatabaseTimeEntry)> >(),
Arg.Is <Func <IDatabaseTimeEntry, IDatabaseTimeEntry, ConflictResolutionMode> >(conflictResolution => conflictResolution != null),
Arg.Is <IRivalsResolver <IDatabaseTimeEntry> >(resolver => resolver != null));
}