public void ParseMowerCommand_WhenPassingValidCommand()
{
char ch = 'M';
MowerInput mowerInput = new MowerInput();
MowerCommand command = MowerInput.ParseMowerCommand(ch);
Assert.AreEqual(MowerCommand.Move, command);
}
internal void ProcessNextPosition(MowerInput mower, MowerCommand command)
{
switch (mower.Direction)
{
case CompassDirection.North:
if (command == MowerCommand.Move)
{
mower.Y = mower.Y + 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.East;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.West;
}
break;
case CompassDirection.South:
if (command == MowerCommand.Move)
{
mower.Y = mower.Y - 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.West;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.East;
}
break;
case CompassDirection.East:
if (command == MowerCommand.Move)
{
mower.X = mower.X + 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.South;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.North;
}
break;
case CompassDirection.West:
if (command == MowerCommand.Move)
{
mower.X = mower.X - 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.North;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.South;
}
break;
default:
throw new ArgumentException("Not a valid direction");
}
}
public static MowerInput ParseMowerInput(string gridDimensionsAndStartingDirection, string commands)
{
MowerInput parsedMoverInput = new MowerInput();
int temp;
string[] data = gridDimensionsAndStartingDirection.Split(' ');
if (data != null)
{
if (int.TryParse(data[0], out temp))
{
parsedMoverInput.X = temp;
}
else
{
throw new ArgumentException("Not an integer");
}
if (int.TryParse(data[1], out temp))
{
parsedMoverInput.Y = temp;
}
else
{
throw new ArgumentException("Not an integer");
}
if (data[2] != null)
{
string cdirection = data[2];
char cc;
cc = cdirection.ToCharArray()[0];
parsedMoverInput.Direction = ParseCompassDirection(cc);
}
else
{
throw new System.ArgumentOutOfRangeException("index parameter is out of range");
}
}
else
{
throw new System.ArgumentException("Grid dimention cannot be null", "data");
}
List <MowerCommand> mowerCommands = new List <MowerCommand>();
if (commands != null)
{
var chars = commands.ToCharArray();
foreach (char c in chars)
{
MowerCommand Commands = ParseMowerCommand(c);
mowerCommands.Add(Commands);
}
}
else
{
throw new System.ArgumentException("Commands cannot be null", "data");
}
parsedMoverInput.Commands = mowerCommands;
return(parsedMoverInput);
}
