public void Move_InvalidCommand_Error()
{
//Arrange
Point startingPoint = new Point(0, 0);
MarsRover.CardinalDirection startingDirection = MarsRover.CardinalDirection.North;
MarsRover rover = new MarsRover(startingPoint, startingDirection, null, null);
//Act
rover.Move(new[] { '?' });
//Assert
Assert.AreEqual(RoverStatus.RoverStatusCode.Error, rover.Status.StatusCode);
}
public void CommandFactory_InvalidCommand_Null()
{
//Arrange
Point startingPoint = new Point(0, 0);
MarsRover.CardinalDirection startingDirection = MarsRover.CardinalDirection.North;
MarsRover rover = new MarsRover(startingPoint, startingDirection, null, null);
//Act
IRoverCommand cmd = rover.CommandFactory('?');
//Assert
Assert.IsNull(cmd);
}
protected Vector CalcNextMove(MarsRover.CardinalDirection direction)
{
switch (direction)
{
case MarsRover.CardinalDirection.North:
return(new Vector(0, 1));
case MarsRover.CardinalDirection.East:
return(new Vector(1, 0));
case MarsRover.CardinalDirection.South:
return(new Vector(0, -1));
case MarsRover.CardinalDirection.West:
return(new Vector(-1, 0));
default:
throw new RoverException($"enum member '{direction}' does not have a corresponding switch case");
}
}
protected override MarsRover.CardinalDirection CalcNewDirection(MarsRover.CardinalDirection direction)
{
switch (direction)
{
case MarsRover.CardinalDirection.East:
return(MarsRover.CardinalDirection.North);
case MarsRover.CardinalDirection.South:
return(MarsRover.CardinalDirection.East);
case MarsRover.CardinalDirection.West:
return(MarsRover.CardinalDirection.South);
case MarsRover.CardinalDirection.North:
return(MarsRover.CardinalDirection.West);
default:
throw new RoverException($"enum member '{direction}' does not have a corresponding switch case");
}
}
public void TurnRight_00N_00E()
{
//Arrange
Point startingPoint = new Point(0, 0);
MarsRover.CardinalDirection startingDirection = MarsRover.CardinalDirection.North;
MarsRover rover = new MarsRover(startingPoint, startingDirection);
var moves = new[] { 'r' };
Point expectedCoordinates = new Point(0, 0);
MarsRover.CardinalDirection expectedStartingDirection = MarsRover.CardinalDirection.East;
//Act
rover.Move(moves);
//Assert
Assert.AreEqual(expectedCoordinates, rover.Coordinates);
Assert.AreEqual(expectedStartingDirection, rover.Direction);
Assert.AreEqual(RoverStatus.RoverStatusCode.Ok, rover.Status.StatusCode);
}
public void MoveOneStepBacward_b_00()
{
//Arrange
Point startingPoint = new Point(0, 1);
MarsRover.CardinalDirection startingDirection = MarsRover.CardinalDirection.North;
MarsRover rover = new MarsRover(startingPoint, startingDirection);
var moves = new[] { 'b' };
Point expectedCoordinates = new Point(0, 0);
MarsRover.CardinalDirection expectedStartingDirection = MarsRover.CardinalDirection.North;
//Act
rover.Move(moves);
//Assert
Assert.AreEqual(expectedCoordinates, rover.Coordinates);
Assert.AreEqual(expectedStartingDirection, rover.Direction);
Assert.AreEqual(RoverStatus.RoverStatusCode.Ok, rover.Status.StatusCode);
}
public void CrossingOverEdgeOfGrid_00Nb_0MaxY()
{
//Arrange
const int width = 10;
const int height = 10;
Point startingPoint = new Point(0, 0); //(0,9)
MarsRover.CardinalDirection startingDirection = MarsRover.CardinalDirection.North;
Grid map = new Grid(width, height);
MarsRover rover = new MarsRover(startingPoint, startingDirection, map, null);
var moves = new[] { 'b' };
Point expectedCoordinates = new Point(0, width - 1); //crossing the grid leads to Y coordinate 0
//Act
rover.Move(moves);
//Assert
Assert.AreEqual(expectedCoordinates, rover.Coordinates);
Assert.AreEqual(RoverStatus.RoverStatusCode.Ok, rover.Status.StatusCode);
}
public abstract RoverPosition CalcNewPosition(Point coordinates, MarsRover.CardinalDirection direction);
public RoverPosition(Point coordinates, MarsRover.CardinalDirection direction)
{
this.Coordinates = coordinates;
this.Direction = direction;
}
public RoverPosition CalcNewPosition(Point coordinates, MarsRover.CardinalDirection direction)
{
var newDirectaion = CalcNewDirection(direction);
return(new RoverPosition(coordinates, newDirectaion)); //rover only turns
}
protected abstract MarsRover.CardinalDirection CalcNewDirection(MarsRover.CardinalDirection direction);
