def test_is_move_legal_suicide(self):
board = GoBoard()
# Make a ponnuki.
board.apply_move('b', (4, 4))
board.apply_move('b', (5, 5))
board.apply_move('b', (6, 4))
board.apply_move('b', (5, 3))
# White can't move in the center.
self.assertFalse(board.is_move_legal('w', (5, 4)))
# But Black can.
self.assertTrue(board.is_move_legal('b', (5, 4)))
def test_is_move_legal_should_not_mutate_board(self):
board = GoBoard()
board.apply_move('b', (4, 4))
board.is_move_legal('b', (4, 5))
# Check the board.
self.assertFalse(board.is_move_on_board((4, 5)))
# Check the go strings as well.
group = board.go_strings[4, 4]
self.assertEqual(1, group.get_num_stones())
self.assertEqual(4, group.get_num_liberties())
def test_to_string(self):
board = GoBoard(5)
for move in [(3, 0), (3, 1), (4, 1)]:
board.apply_move('b', move)
for move in [(0, 2), (1, 2), (1, 3), (1, 4)]:
board.apply_move('w', move)
board_string = to_string(board)
lines = board_string.split('\n')
self.assertEqual([
'.b...',
'bb...',
'.....',
'..www',
'..w..',
], lines)
def test_is_move_legal(self):
board = GoBoard()
board.apply_move('b', (4, 4))
self.assertTrue(board.is_move_legal('b', (3, 3)))
self.assertTrue(board.is_move_legal('w', (3, 3)))
def test_is_move_legal_capture_not_suicide(self):
board = GoBoard()
# Set up a ko.
board.apply_move('b', (4, 4))
board.apply_move('b', (5, 5))
board.apply_move('b', (6, 4))
board.apply_move('b', (5, 3))
board.apply_move('w', (4, 5))
board.apply_move('w', (5, 6))
board.apply_move('w', (6, 5))
# Either can move in the center.
self.assertTrue(board.is_move_legal('w', (5, 4)))
self.assertTrue(board.is_move_legal('b', (5, 4)))
def test_is_move_legal_occupied(self):
board = GoBoard()
board.apply_move('b', (4, 4))
self.assertFalse(board.is_move_legal('b', (4, 4)))
self.assertFalse(board.is_move_legal('w', (4, 4)))
def test_is_move_legal_ko(self):
board = GoBoard()
# Set up a ko.
board.apply_move('b', (4, 4))
board.apply_move('b', (5, 5))
board.apply_move('b', (6, 4))
board.apply_move('b', (5, 3))
board.apply_move('w', (4, 5))
board.apply_move('w', (5, 6))
board.apply_move('w', (6, 5))
# White captures.
board.apply_move('w', (5, 4))
# Black can't fill in the ko.
self.assertTrue(board.is_simple_ko('b', (5, 5)))
self.assertFalse(board.is_move_legal('b', (5, 5)))
# But white can.
self.assertTrue(board.is_move_legal('w', (5, 5)))
