public void TestAddDeleteRangeBoardAsync() { const string desc = "Board PI TestAddDeleteRangeBoard"; var startNBoards = _br.CountAsync().Result; var boardlist = new List <Board>() { new Board { Name = "Board PI TestAddDeleteRange1", Discription = desc }, new Board { Name = "Board PI TestAddDeleteRange2", Discription = desc }, new Board { Name = "Board PI TestAddDeleteRange3", Discription = desc } }; _br.AddRangeAsync(boardlist); Assert.AreEqual(startNBoards + 3, _br.CountAsync().Result); var addedboards = _br.FindAllByAsync(b => b.Discription == desc).Result; Assert.AreEqual(3, addedboards.Count()); _br.DeleteRange(addedboards); Assert.AreEqual(0, _br.FindAllByAsync(b => b.Discription == desc).Result.Count()); Assert.AreEqual(startNBoards, _br.CountAsync().Result); }