public void Test_SudokuBoardColumn_LowerBoundaries_ShouldThrowError()
 {
     SudokuSolver.SudokuBoard.BoardEntity   board  = new SudokuSolver.SudokuBoard.BoardEntity();
     SudokuSolver.SudokuBoard.NineSetEntity column = board.Columns[-1];
 }
 public void Test_SudokuBoardRegion_UpperBoundaries_ShouldThrowError()
 {
     SudokuSolver.SudokuBoard.BoardEntity   board  = new SudokuSolver.SudokuBoard.BoardEntity();
     SudokuSolver.SudokuBoard.NineSetEntity region = board.Regions[9];
 }
 public void Test_SudokuBoardRow_LowerBoundaries_ShouldThrowError()
 {
     SudokuSolver.SudokuBoard.BoardEntity   board = new SudokuSolver.SudokuBoard.BoardEntity();
     SudokuSolver.SudokuBoard.NineSetEntity row   = board.Rows[-1];
 }