@Test
 public void testToCreateARobotAndPlaceIt() {
   DIRECTIONS pos = DIRECTIONS.valueOf("NORTH");
   xy.setXY(0, 0);
   robot.place(pos, xy);
   assertEquals("0,0 NORTH", robot.report());
 }
 @Test
 public void testTomoveRobotFacingEastAt00() {
   DIRECTIONS pos = DIRECTIONS.valueOf("EAST");
   xy.setXY(0, 0);
   robot.place(pos, xy);
   robot.move();
   assertEquals("1,0 EAST", robot.report());
 }
 @Test
 public void testTomoveRobotFacingSouthAt00() {
   DIRECTIONS pos = DIRECTIONS.valueOf("SOUTH");
   xy.setXY(0, 0);
   robot.place(pos, xy);
   robot.move();
   assertEquals("0,-1 SOUTH", robot.report());
 }
 @Test
 public void testToTurnLeftRobotFacingNorth() {
   DIRECTIONS pos = DIRECTIONS.valueOf("NORTH");
   xy.setXY(0, 0);
   robot.place(pos, xy);
   robot.turnLeft();
   assertEquals("0,0 WEST", robot.report());
 }
 @Test
 public void testToTurnRobotFacingWestAndThenTurnRight() {
   DIRECTIONS pos = DIRECTIONS.valueOf("WEST");
   xy.setXY(0, 0);
   robot.place(pos, xy);
   robot.turnRight();
   assertEquals("0,0 NORTH", robot.report());
 }