public void ParseCommandTestValidCommand()
{
try
{
Command expected = Command.LEFT;
Command actual = InputParser.GetCommand(Command.LEFT.ToString());
Assert.IsTrue(expected == actual);
}
catch (ArgumentException)
{
Assert.Fail();
}
}
public void ParseCommandTestInvalidCommand()
{
try
{
string expectedCmdString = "TESTING";
Command result = InputParser.GetCommand("TESTING 123 435");
Assert.IsTrue(expectedCmdString == result.ToString());
}
catch (ArgumentException ex)
{
string expected = "Requested value 'TESTING 123 435' was not found.";
Assert.AreEqual(ex.Message, expected);
}
}
public void ProcessInput(string commandString)
{
log.Info("Command: " + commandString);
string[] args = commandString.Split(new[] { Constants.SPACECHAR }, 2);
try
{
Command cmd = InputParser.GetCommand(args[0]);
switch (cmd)
{
case Command.PLACE:
if (args.Length > 1)
{
(int x, int y, Direction dir) = InputParser.ProcessPlaceCommand(args[1]);
Robot.Place(x, y, dir);
}
else
{
log.Error("PLACE command issued without location and direction arguments. please provide the following arguments: PLACE X,Y,F");
}
break;
case Command.LEFT:
Robot.Left();
break;
case Command.MOVE:
Robot.Move();
break;
case Command.RIGHT:
Robot.Right();
break;
default:
//anything apart from the handled commands need to be ignored.
log.Error(string.Format("Command {0} is invalid and will be ignored.", commandString));
break;
}
}
catch (Exception ex) when(ex is ArgumentException || ex is FormatException)
{
//parsing errors will cause these exceptions so handle them as invalid commands
log.Error(string.Format("Command {0} is invalid and will be ignored.", commandString));
}
}
