public void move_robot_to_out_of_boundries_throws_exception()
{
var coord = new Tuple<int, int>(5, 5);
ITable table = new Table(coord);
var robotState = new RobotState(4, 5, 'E');
IRobotService robotService = new RobotService(table, robotState);
string command = "MML";
var ex = Assert.Throws<InvalidOperationException>(() => robotService.Proceed(command));
Assert.That(ex.Message, Is.EqualTo("Out of boundaries"));
}
public void move_robot_from_12n_goes_to_13n()
{
var coord = new Tuple<int, int>(5, 5);
ITable table = new Table(coord);
var robotState = new RobotState(1, 2, 'N');
IRobotService robotService = new RobotService(table, robotState);
string command = "LMLMLMLMM";
var pos = robotService.Proceed(command);
var expectedState = new RobotState(1, 3, 'N');
Assert.AreEqual(expectedState.RobotCoordinate, pos.RobotCoordinate);
Assert.AreEqual(expectedState.Heading, pos.Heading);
}
public void move_robot_from_33e_goes_to_51e()
{
var coord = new Tuple<int, int>(5, 5);
ITable table = new Table(coord);
var robotState = new RobotState(3, 3, 'e');
IRobotService robotService = new RobotService(table, robotState);
string command = "MMRMMRMRRM";
var pos = robotService.Proceed(command);
var expectedState = new RobotState(5, 1, 'E');
Assert.AreEqual(expectedState.RobotCoordinate, pos.RobotCoordinate);
Assert.AreEqual(expectedState.Heading, pos.Heading);
}
/// <summary>
/// Checks if the movement is valid
/// </summary>
/// <param name="robotCurrentState"></param>
/// <returns></returns>
private bool CanMove(RobotState robotCurrentState)
{
int x = robotCurrentState.RobotCoordinate.Item1;
int y = robotCurrentState.RobotCoordinate.Item2;
int tableX = _table.TableCoordinate.Item1;
int tableY = _table.TableCoordinate.Item2;
switch (robotCurrentState.Heading)
{
//Facing north shouldn't Y of the table
case 'N':
if (y + 1 > tableY)
return false;
break;
//Facing east shouldn't X of the table
case 'E':
if (x + 1 > tableX)
return false;
break;
//Facing south shouldn't go bellow 0
case 'S':
if (y - 1 < 0)
return false;
break;
//Facing west shouldn't go bellow 0
case 'W':
if (x - 1 < 0)
return false;
break;
}
return true;
}
/// <summary>
/// Initialize the robot
/// </summary>
/// <param name="table"></param>
/// <param name="robotCurrentState"></param>
public RobotService(ITable table, RobotState robotCurrentState)
{
_table = table;
_robot = new Robot(robotCurrentState);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="state"></param>
public Robot(RobotState state)
{
RobotState = state;
}
public void move_robot_with_invalid_command_throws_exception()
{
var coord = new Tuple<int, int>(5, 5);
ITable table = new Table(coord);
var robotState = new RobotState(3, 3, 'E');
IRobotService robotService = new RobotService(table, robotState);
string command = "ABCD1234";
var pos = robotService.Proceed(command);
var expectedState = new RobotState(3, 3, 'E');
Assert.AreEqual(expectedState.RobotCoordinate, pos.RobotCoordinate);
Assert.AreEqual(expectedState.Heading, pos.Heading);
}
public void turn_robot_to_left_from_00n_goes_to_00w()
{
var coord = new Tuple<int, int>(5, 5);
ITable table = new Table(coord);
var robotState = new RobotState(0, 0, 'N');
IRobotService robotService = new RobotService(table, robotState);
string command = "L";
var pos = robotService.Proceed(command);
var expectedState = new RobotState(0, 0, 'W');
Assert.AreEqual(expectedState.RobotCoordinate, pos.RobotCoordinate);
Assert.AreEqual(expectedState.Heading, pos.Heading);
}