public void ValidateAndParseTest()
{
StringBuilder testInput = new StringBuilder();
testInput.AppendLine("5 5");
testInput.AppendLine("1 2 N");
testInput.AppendLine("LMLMLMLMM");
testInput.AppendLine("3 3 E");
testInput.AppendLine("MMRMMRMRRM");
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(testInput.ToString()));
StreamReader sr = new StreamReader(ms);
InstructionParser parser = new InstructionParser(sr);
Assert.AreEqual(parser.ValidateAndParse(), 0);
Assert.AreEqual(parser.GridCorner, (5, 5));
Assert.AreEqual(parser.RoverInstructions.Count, 2);
Assert.AreEqual(parser.RoverInstructions[0], ((1, 2, Heading.N), "LMLMLMLMM"));
Assert.AreEqual(parser.RoverInstructions[1], ((3, 3, Heading.E), "MMRMMRMRRM"));
}
static void Main(string[] args)
{
while (true)
{
Console.WriteLine("Please provide the path to a text file with NASA's input:");
Console.WriteLine("Press enter with no input to default to an \"Instructions.txt\" file located in the same directory as this executable.");
string path = Console.ReadLine();
if (String.IsNullOrEmpty(path))
{
path = "Instructions.txt";
}
StreamReader sr;
InstructionParser ip;
int roverID = 1;
List <Rover> roverList = new List <Rover>();
try
{
sr = new StreamReader(path);
ip = new InstructionParser(sr);
if (ip.ValidateAndParse() != 0)
{
Console.WriteLine("There was an issue validating the input from NASA. Check the instructions for errors and try again.");
Console.WriteLine();
continue;
}
Plateau plateau = new Plateau(ip.GridCorner.xCoord, ip.GridCorner.yCoord);
foreach (var roverSet in ip.RoverInstructions)
{
int xCoord = roverSet.Start.xCoord;
int yCoord = roverSet.Start.yCoord;
Heading heading = roverSet.Start.heading;
string instructions = roverSet.Instructions;
roverList.Add(new Rover(xCoord, yCoord, heading, plateau, roverID, instructions));
roverID++;
}
foreach (Rover rover in roverList)
{
if (rover.Run() == 1)
{
Console.WriteLine("Rover " + rover.RoverID + " Ran into a problem on its route, it stopped in progress at:");
}
Console.WriteLine(rover.ReportCoordsAndHeading());
}
}
catch (Exception e)
{
if (e is FileNotFoundException || e is DirectoryNotFoundException || e is IOException)
{
Console.WriteLine("Could not find the file or directory specified, please check the path provided.");
Console.WriteLine();
continue;
}
else
{
throw;
}
}
}
}