public async Task GetSingleObjectAsync_NotExist_ReturnNull()
{
await PerformSingleObjectNotExistAsyncTest(() => _session.GetSingleObjectAsync(SingleObjectQuery));
}
/// <summary>
/// Gets the single object by query asynchronously.
/// </summary>
/// <param name="query">The query.</param>
/// <returns></returns>
public Task <T> GetSingleByQueryAsync(Expression <Func <T, bool> > query)
{
return(Session.GetSingleObjectAsync(query));
}