### Question:
Plip extends Creature { public Action chooseAction(Map<Direction, Occupant> neighbors) { List<Direction> empties = getNeighborsOfType(neighbors, "empty"); List<Direction> enemies = getNeighborsOfType(neighbors, "clorus"); if (empties.size() == 0) { return new Action(Action.ActionType.STAY); } else { if (energy >= 1) { Direction moveDir = HugLifeUtils.randomEntry(empties); return new Action(Action.ActionType.REPLICATE, moveDir); } if (enemies.size() > 0) { if (HugLifeUtils.random() < 0.5) { Direction moveDir = HugLifeUtils.randomEntry(empties); return new Action(Action.ActionType.MOVE, moveDir); } } } return new Action(Action.ActionType.STAY); } Plip(double e);  Plip(); Color color(); void attack(Creature c); void move(); void stay(); Plip replicate(); Action chooseAction(Map<Direction, Occupant> neighbors);  }### Answer:
@Test public void testChoose() { Plip p = new Plip(1.2); HashMap<Direction, Occupant> surrounded = new HashMap<Direction, Occupant>(); surrounded.put(Direction.TOP, new Impassible()); surrounded.put(Direction.BOTTOM, new Impassible()); surrounded.put(Direction.LEFT, new Impassible()); surrounded.put(Direction.RIGHT, new Impassible()); Action actual = p.chooseAction(surrounded); Action expected = new Action(Action.ActionType.STAY); assertEquals(expected, actual); Plip p2 = new Plip(1.5); HashMap<Direction, Occupant> surrounded2 = new HashMap<Direction, Occupant>(); surrounded2.put(Direction.TOP, new Impassible()); surrounded2.put(Direction.BOTTOM, new Impassible()); surrounded2.put(Direction.LEFT, new Impassible()); surrounded2.put(Direction.RIGHT, new Impassible()); Action actual2 = p2.chooseAction(surrounded2); Action expected2 = new Action(Action.ActionType.REPLICATE, null); assertEquals(expected2, actual2); Plip p3 = new Plip(0.5); Action actual3 = p3.chooseAction(surrounded2); Action expected3 = new Action(Action.ActionType.STAY); assertEquals(expected3, actual3); }