def test_can_make_moves(self):
b = Board(seed=False)
# Make sure it's fully empty first
self.assertEqual(len(b.empty_tiles()), 16)
# Put a square in the top left corner
val = 1
pos = 0
b._tiles.put(pos, val)
# Move in the negative direction along the rows (up)
# Then move in the negative direction along the columns (left)
# Should do nothing, we are at the edge
for d in (1, 3):
b.move(d, suppress_invalid=True)
self.assertEqual(b._tiles.take(pos), val)
# Move in the positive direction along the rows (down)
# This should move three rows
b.move(0)
pos += b.length * 3
self.assertEqual(b._tiles.take(pos), val)
# At the bottom - movement should do nothing
b.move(0, suppress_invalid=True)
self.assertEqual(b._tiles.take(pos), val)
# Move in the positive direction along the columns (right)
# This should move three columns
b.move(2)
pos += 3
self.assertEqual(b._tiles.take(pos), val)
# At the right - movement should do nothing
b.move(2, suppress_invalid=True)
self.assertEqual(b._tiles.take(pos), val)
def test_new_board_starts_with_two_squares(self):
b = Board()
self.assertFalse(b.is_board_full())
self.assertEqual(len(b.empty_tiles()), len(b._tiles.flatten()) - 2)
