public void Lawn_Mower_Should_End_In_Position_One_Three_North_If_Initial_Position_Is_One_Two_North_And_Commands_Are_LMLMLMLMM()
{
var lawnMower = new LawnMower(1, 2, LawnMower.Direction.N, 5, 5);
var success = lawnMower.ExecuteCommands("LMLMLMLMM");
Assert.AreEqual(true, success);
Assert.AreEqual(LawnMower.Direction.N, lawnMower.GetPosition().Heading);
Assert.AreEqual(1, lawnMower.GetPosition().X);
Assert.AreEqual(3, lawnMower.GetPosition().Y);
}
public void Lawn_Mower_Should_End_In_Position_Five_One_East_If_Initial_Position_Is_Three_Three_East_And_Commands_Are_MMRMMRMRRM()
{
var lawnMower = new LawnMower(3, 3, LawnMower.Direction.E, 5, 5);
var success = lawnMower.ExecuteCommands("MMRMMRMRRM");
Assert.AreEqual(true, success);
Assert.AreEqual(LawnMower.Direction.E, lawnMower.GetPosition().Heading);
Assert.AreEqual(5, lawnMower.GetPosition().X);
Assert.AreEqual(1, lawnMower.GetPosition().Y);
}
public void Lawn_Mower_Should_Not_Execute_Commands_If_One_Of_The_Commands_Is_Invalid()
{
var lawnMower = new LawnMower(0, 0, LawnMower.Direction.W, 5, 5);
var success = lawnMower.ExecuteCommands("MLRZ");
Assert.AreEqual(false, success);
}
private static void MownTheLawn(string inputFilePath)
{
var tempSplitPath = inputFilePath.Split('\\');
var outputFilePath = inputFilePath.Replace(tempSplitPath[tempSplitPath.Length - 1], "output.txt");
using (var reader = new StreamReader(inputFilePath))
{
using (var writer = new StreamWriter(outputFilePath))
{
var readLine = reader.ReadLine();
if (readLine == null)
{
FinishProgram("Input file has no lines");
return;
}
var fieldSize = readLine.Split(' ');
var fieldWidth = 0u;
var fieldHeight = 0u;
if (fieldSize.Length < 2 || !uint.TryParse(fieldSize[0], out fieldWidth) ||
!uint.TryParse(fieldSize[1], out fieldHeight))
{
FinishProgram("The height/width of the Lawn is invalid. Expected 2 numbers separated by whitespace, for example: 5 5");
}
var lawnMowerIndex = 1;
while (!reader.EndOfStream)
{
var mowerLine = reader.ReadLine();
if (mowerLine == null)
{
FinishProgram("The position of the lawn mower #" + lawnMowerIndex + " is not in the file");
return;
}
var position = mowerLine.Split(' ');
var x = 0u;
var y = 0u;
var heading = LawnMower.Direction.N;
if (position.Length < 3 || !uint.TryParse(position[0], out x) ||
!uint.TryParse(position[1], out y) || !Enum.TryParse(position[2], out heading))
{
FinishProgram("The position of the lawn mower #" + lawnMowerIndex +
" is invalid. Expected 2 numbers and a direction (N,S,E,W) separated by whitespace, for example: 1 2 N");
}
var lawnMower = new LawnMower(x, y, heading, fieldWidth, fieldHeight);
var commandsLine = reader.ReadLine();
if (commandsLine == null)
{
FinishProgram("No commands provided for lawn mower #" + lawnMowerIndex +
". Expected a string with a combination of commands (L,R,M), for example: LMLMLMLMM");
return;
}
var success = lawnMower.ExecuteCommands(commandsLine);
if (!success)
{
FinishProgram("The commands provided for lawn mower #" + lawnMowerIndex +
"are invalid. Expected a string with a combination of commands (L,R,M) with no whitespaces, for example: LMLMLMLMM");
}
writer.WriteLine(lawnMower.GetPosition().ToString());
lawnMowerIndex++;
}
}
}
Console.WriteLine("");
Console.WriteLine("Output file with LawnMowers final positions was created successfully '" + outputFilePath + "'");
}