public void TraverseMaze_MovingEastNotAtEasternBorder_ReturnsIndexOfEasternNeighbour(int startIndex, int expectedIndex)
{
char direction = 'E';
int?actualIndex = MazeHandler.TraverseMaze(maze, startIndex, direction);
Assert.Equal(expectedIndex, actualIndex);
}
public void TraverseMaze_MovingEastNotAtEasternBorder_ReturnsNotNull()
{
int currentIndex = mazeSize; // Not on right edge
char direction = 'E';
int?actualIndex = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.NotNull(actualIndex);
}
public void TraverseMaze_MovingNorthNotAtNorthernBorder_ReturnsNotNull()
{
int currentIndex = mazeSize * 1; // On second row
char direction = 'N';
int?actualIndex = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.NotNull(actualIndex);
}
public void TraverseMaze_MovingEastAtEasternBorder_ReturnsNull()
{
int currentIndex = mazeSize - 1; // On right edge
char direction = 'E';
int?result = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.Null(result);
}
public void TraverseMaze_MovingNorthAtNorthernBorder_ReturnsNull()
{
int currentIndex = 0; // On first row
char direction = 'N';
int?result = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.Null(result);
}
public void TraverseMaze_MovingWestAtWesternBorder_ReturnsNull()
{
int currentIndex = 0; // On western edge
char direction = 'W';
int?result = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.Null(result);
}
public void TraverseMaze_MovingSouthNotAtSouthernBorder_ReturnsNotNull()
{
int currentIndex = 0; // Not on southern edge
char direction = 'S';
int?actualIndex = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.NotNull(actualIndex);
}
public void TraverseMaze_MovingSouthAtSouthernBorder_ReturnsNull()
{
int currentIndex = mazeSize * (mazeSize - 1); // On southern edge
char direction = 'S';
int?result = MazeHandler.TraverseMaze(maze, currentIndex, direction);
Assert.Null(result);
}
public void TraverseMaze_InvalidDirection_ThrowsException()
{
int currentIndex = 0; // On western edge
char direction = '1';
var exception = Record.Exception(() => MazeHandler.TraverseMaze(maze, currentIndex, direction));
Assert.NotNull(exception);
Assert.IsType <InvalidDirectionException>(exception);
}
