public void GetLetterFromAlphabetPosition_WhenValidPositionProvided_ExpectCorrectLetterToBeReturned()
{
// Arrange
_returnedLetter = "C";
// Act
var result = AlphabetHelper.GetLetterFromAlphabetPosition(3);
// Assert
Assert.IsNotNull(result);
Assert.AreEqual(_returnedLetter, result);
}
public void GetLetterFromAlphabetPosition_WhenPositionIsGreaterThanTwentySix_ExpectArgumentOutOfRangeExcpetion()
{
// Act
try
{
var result = AlphabetHelper.GetLetterFromAlphabetPosition(27);
}
catch (ArgumentException ex)
{
// Assert
Assert.IsInstanceOfType(ex, typeof(ArgumentOutOfRangeException));
throw ex;
}
}
/// <summary>
/// Constructor
/// Initialises a new Grid with the expected parameters and sets up Grid Cells with references
/// </summary>
/// <param name="columns"></param>
/// <param name="rows"></param>
public Grid(int columns, int rows)
{
Condition.Requires(columns);
Condition.Requires(rows);
Cells = new GridCell[columns, rows];
for (int c = 0; c < columns; c++)
{
for (int r = 0; r < rows; r++)
{
var xref = c + 1; // Not zero indexed
var yref = AlphabetHelper.GetLetterFromAlphabetPosition(r + 1).ToString();
var status = GridCellStatus.OpenSea;
Cells[c, r] = new GridCell(xref, yref, status);
}
}
}