public void Get_AddOneGetOtherId_ReturnsNull() { bool error = false; GeneralClass returned = null; Guid id = Guid.NewGuid(); var name = "Name 1"; try { var item = new GeneralClass { Id = id, Name = name }; var repository01 = new GeneralRepository(); repository01.Reset(); repository01.Set(item); returned = repository01.Get(Guid.NewGuid()); } catch (Exception e) { error = true; } Assert.IsFalse(error); Assert.IsNull(returned); }