def ensure_free_position(cur, node, position):
"""
Move siblings away to have a free slot at ``position`` in the
children of ``node``.
:param node:
:type node: Node or int
:param int position:
"""
try:
get_node_at_position(cur, node, position)
node_exists_at_position = True
except ValueError:
node_exists_at_position = False
if node_exists_at_position:
shift_positions(cur, node, position, +1)
def ensure_free_position(cur, node, position):
"""
Move siblings away to have a free slot at ``position`` in the
children of ``node``.
:param node:
:type node: Node or int
:param int position:
"""
try:
get_node_at_position(cur, node, position)
node_exists_at_position = True
except ValueError:
node_exists_at_position = False
if node_exists_at_position:
shift_positions(cur, node, position, +1)
def test_get_node_at_position_non_existing(cur, root, nd3):
with pytest.raises(ValueError):
get_node_at_position(cur, root, -1)
with pytest.raises(ValueError):
get_node_at_position(cur, str(uuid.uuid4()), 1)
def test_get_node_at_position(cur, root, nd3):
node = get_node_at_position(cur, root, nd3.position)
assert node.position == nd3.position
def test_get_node_at_position_non_existing(cur, root, nd3):
with pytest.raises(ValueError):
get_node_at_position(cur, root, -1)
with pytest.raises(ValueError):
get_node_at_position(cur, -1, 1)
def test_get_node_at_position(cur, root, nd3):
node = get_node_at_position(cur, root, nd3.position)
assert node.position == nd3.position
