def testSnakeLength(self):
game_map = Map2D(2, 1)
snake = Snake(game_map, 0, 0, Direction.X_POSITIVE)
self.assertEqual(len(snake), 1)
Food(game_map)
snake.move()
self.assertEqual(len(snake), 2)
def testMoveResultHitUnknownObject(self):
game_map = Map2D(2, 1)
snake = Snake(game_map, 0, 0, Direction.X_POSITIVE)
game_map.put('some_object', 1, 0)
with self.assertRaises(RuntimeError) as context:
snake.move()
self.assertIn('Blocking object unknown type', str(context.exception))
def testInsideMapBoundary(self):
game_map = Map2D(2, 3)
self.assertTrue(game_map.inside_map_boundary(1, 2))
self.assertFalse(game_map.inside_map_boundary(2, 0))
self.assertFalse(game_map.inside_map_boundary(-4, 0))
self.assertFalse(game_map.inside_map_boundary(0, 3))
self.assertFalse(game_map.inside_map_boundary(0, -1))
def testInvalidPosition(self):
game_map = Map2D(2, 2)
with self.assertRaises(ValueError) as context:
game_map.validate_position(2, 2)
self.assertIn('outside of the current map dimensions',
str(context.exception))
def testMovementUnsuccessfulDirectionChange(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 0, 1, Direction.X_POSITIVE)
snake.move()
snake.set_direction(Direction.X_NEGATIVE)
snake.move()
self.assertEqual(game_map.peek(2, 1), snake)
def testTriesToPutStringToOccupiedPosition(self):
game_map = Map2D(1, 2)
game_map.put('blocker', 0, 1)
self.assertEqual(game_map.try_put('testString', 0, 1), 'blocker')
self.assertEqual(game_map.peek(0, 1), 'blocker')
self.assertIsNone(game_map.peek(0, 0))
def testPutsStringToFreePosition(self):
game_map = Map2D(2, 2)
game_map.put('testString', 0, 1)
self.assertEqual(game_map.peek(0, 1), 'testString')
self.assertIsNone(game_map.peek(0, 0))
self.assertIsNone(game_map.peek(1, 0))
self.assertIsNone(game_map.peek(1, 1))
def testMoveResultAteFood(self):
game_map = Map2D(2, 1)
snake = Snake(game_map, 0, 0, Direction.X_POSITIVE)
Food(game_map)
self.assertEqual(snake.move(), Snake.MoveResult.ATE_FOOD)
self.assertIs(game_map.peek(0, 0), snake)
self.assertIs(game_map.peek(1, 0), snake)
self.assertEqual(snake.head_pos(), (1, 0))
def testPutsStringToOccupiedPosition(self):
game_map = Map2D(2, 2)
game_map.put('existing', 0, 1)
game_map.put('newObject', 0, 1)
self.assertEqual(game_map.peek(0, 1), 'newObject')
self.assertIsNone(game_map.peek(0, 0))
self.assertIsNone(game_map.peek(1, 0))
self.assertIsNone(game_map.peek(1, 1))
def testMoveSnakeOnCircularPath(self):
game_map = Map2D(2, 2)
snake = Snake(game_map, 0, 0, Direction.X_POSITIVE)
Food(game_map)
Food(game_map)
Food(game_map)
snake.move()
snake.set_direction(Direction.Y_POSITIVE)
snake.move()
snake.set_direction(Direction.X_NEGATIVE)
snake.move()
snake.set_direction(Direction.Y_NEGATIVE)
self.assertEqual(snake.move(), Snake.MoveResult.MOVED)
self.assertEqual(snake.head_pos(), (0, 0))
self.assertEqual(snake.end_pos(), (1, 0))
def testMoveResultHitSnake(self):
game_map = Map2D(2, 1)
snake = Snake(game_map, 0, 0, Direction.X_POSITIVE)
Snake(game_map, 1, 0, Direction.X_POSITIVE)
self.assertEqual(snake.move(), Snake.MoveResult.HIT_SNAKE)
self.assertIs(game_map.peek(0, 0), snake)
def testMoveResultHitWall(self):
game_map = Map2D(1, 1)
snake = Snake(game_map, 0, 0, Direction.Y_NEGATIVE)
self.assertEqual(snake.move(), Snake.MoveResult.HIT_WALL)
def testMoveInUndefinedDirection(self):
game_map = Map2D(1, 1)
snake = Snake(game_map, 0, 0, 'not_a_direction')
with self.assertRaises(RuntimeError) as context:
snake.move()
self.assertIn('Invalid direction', str(context.exception))
def testMoveYNegative(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 1, 1, Direction.Y_NEGATIVE)
self.assertEqual(snake.move(), Snake.MoveResult.MOVED)
self.assertIs(game_map.peek(1, 0), snake)
self.assertIsNone(game_map.peek(1, 1))
def testMoveXPositive(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 1, 1, Direction.X_POSITIVE)
self.assertEqual(snake.move(), Snake.MoveResult.MOVED)
self.assertIs(game_map.peek(2, 1), snake)
self.assertIsNone(game_map.peek(1, 1))
def testShape(self):
game_map = Map2D(1, 5)
self.assertEqual(game_map.shape(), (1, 5))
def testHeadPositionIsCorrectAfterMove(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 1, 1, Direction.X_POSITIVE)
snake.move()
self.assertEqual(snake.head_pos(), (2, 1))
def testReturnsEndPosition(self):
game_map = Map2D(2, 1)
snake = Snake(game_map, 1, 0, Direction.X_NEGATIVE)
Food(game_map)
snake.move()
self.assertEqual(snake.end_pos(), (1, 0))
def testFailsToPutSnakeOnFilledPosition(self):
game_map = Map2D(3, 3)
game_map.put('blocker', 1, 2)
with self.assertRaises(ValueError) as context:
Snake(game_map, 1, 2, Direction.X_POSITIVE)
self.assertIn('is blocked by', str(context.exception))
def testPutsSnakeOnEmptyPosition(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 1, 2, Direction.X_POSITIVE)
self.assertEqual(game_map.peek(1, 2), snake)
def testValidatePosition(self):
game_map = Map2D(2, 2)
game_map.validate_position(0, 1)
def testReturnsHeadPosition(self):
game_map = Map2D(3, 3)
snake = Snake(game_map, 1, 2, Direction.X_POSITIVE)
self.assertEqual(snake.head_pos(), (1, 2))
def testTriesToPutStringToFreePosition(self):
game_map = Map2D(1, 2)
self.assertIsNone(game_map.try_put('testString', 0, 1))
self.assertEqual(game_map.peek(0, 1), 'testString')
self.assertIsNone(game_map.peek(0, 0))