def test_promotion(self):
board = Board(4, 2)
board.add(Pawn, (0, 0), Color.WHITE)
for i in range(3):
board.move((0, i), (0, i + 1))
board.promote((0, 3), Queen)
self.assertEqual(Queen, board.get((0, 3))[1])
def test_move(self):
board = Board(4, 2)
board.add(Queen, (0, 0), Color.WHITE)
board.add(Queen, (3, 3), Color.BLACK)
self.assertEqual(2, len(board.board))
board.move((0, 0), (3, 3))
self.assertEqual(1, len(board.board))