public void DetectCurrentMoveIsOverwrite()
        {
            //setup:
            GridUpdater.InsertIntoGrid(new Tuple <ushort, ushort>(1, 1), Moves.O);
            //act
            MoveCategory actualError = TurnValidator.CurrentMoveIsOverwrite(new Tuple <ushort, ushort>(1, 1));

            //assert
            actualError.Should().Be(MoveCategory.PositionAlreadyFilledError);
        }
        public void DetectCurrentMoveIsNotOverwrite()
        {
            MoveCategory actualError = TurnValidator.CurrentMoveIsOverwrite(new Tuple <ushort, ushort>(0, 0));

            actualError.Should().Be(MoveCategory.MoveIsValid);
        }