def test_node_set_attributes():
root = Node(1)
assert root.left is None
assert root.right is None
assert root.val == 1
assert root.value == 1
assert repr(root) == 'Node(1)'
root.value = 2
assert root.value == 2
assert root.val == 2
assert repr(root) == 'Node(2)'
root.val = 1
assert root.value == 1
assert root.val == 1
assert repr(root) == 'Node(1)'
left_child = Node(2)
root.left = left_child
assert root.left is left_child
assert root.right is None
assert root.val == 1
assert root.left.left is None
assert root.left.right is None
assert root.left.val == 2
assert repr(left_child) == 'Node(2)'
right_child = Node(3)
root.right = right_child
assert root.left is left_child
assert root.right is right_child
assert root.val == 1
assert root.right.left is None
assert root.right.right is None
assert root.right.val == 3
assert repr(right_child) == 'Node(3)'
last_node = Node(4)
left_child.right = last_node
assert root.left.right is last_node
assert repr(root.left.right) == 'Node(4)'
with pytest.raises(NodeValueError) as err:
# noinspection PyTypeChecker
Node('this_is_not_an_integer')
assert str(err.value) == 'node value must be a number'
with pytest.raises(NodeTypeError) as err:
# noinspection PyTypeChecker
Node(1, 'this_is_not_a_node')
assert str(err.value) == 'left child must be a Node instance'
with pytest.raises(NodeTypeError) as err:
# noinspection PyTypeChecker
Node(1, Node(1), 'this_is_not_a_node')
assert str(err.value) == 'right child must be a Node instance'
with pytest.raises(NodeValueError) as err:
root.val = 'this_is_not_an_integer'
assert root.val == 1
assert str(err.value) == 'node value must be a number'
with pytest.raises(NodeValueError) as err:
root.value = 'this_is_not_an_integer'
assert root.value == 1
assert str(err.value) == 'node value must be a number'
with pytest.raises(NodeTypeError) as err:
root.left = 'this_is_not_a_node'
assert root.left is left_child
assert str(err.value) == 'left child must be a Node instance'
with pytest.raises(NodeTypeError) as err:
root.right = 'this_is_not_a_node'
assert root.right is right_child
assert str(err.value) == 'right child must be a Node instance'
def test_node_set_attributes():
root = Node(1)
assert root.left is None
assert root.right is None
assert root.val == 1
assert root.value == 1
assert repr(root) == "Node(1)"
root.value = 2
assert root.value == 2
assert root.val == 2
assert repr(root) == "Node(2)"
root.val = 1
assert root.value == 1
assert root.val == 1
assert repr(root) == "Node(1)"
left_child = Node(2)
root.left = left_child
assert root.left is left_child
assert root.right is None
assert root.val == 1
assert root.left.left is None
assert root.left.right is None
assert root.left.val == 2
assert repr(left_child) == "Node(2)"
right_child = Node(3)
root.right = right_child
assert root.left is left_child
assert root.right is right_child
assert root.val == 1
assert root.right.left is None
assert root.right.right is None
assert root.right.val == 3
assert repr(right_child) == "Node(3)"
last_node = Node(4)
left_child.right = last_node
assert root.left.right is last_node
assert repr(root.left.right) == "Node(4)"
with pytest.raises(NodeValueError) as err:
# noinspection PyTypeChecker
Node("this_is_not_an_integer")
assert str(err.value) == "node value must be a float or int"
with pytest.raises(NodeTypeError) as err:
# noinspection PyTypeChecker
Node(1, "this_is_not_a_node")
assert str(err.value) == "left child must be a Node instance"
with pytest.raises(NodeTypeError) as err:
# noinspection PyTypeChecker
Node(1, Node(1), "this_is_not_a_node")
assert str(err.value) == "right child must be a Node instance"
with pytest.raises(NodeValueError) as err:
root.val = "this_is_not_an_integer"
assert root.val == 1
assert str(err.value) == "node value must be a float or int"
with pytest.raises(NodeValueError) as err:
root.value = "this_is_not_an_integer"
assert root.value == 1
assert str(err.value) == "node value must be a float or int"
with pytest.raises(NodeTypeError) as err:
root.left = "this_is_not_a_node"
assert root.left is left_child
assert str(err.value) == "left child must be a Node instance"
with pytest.raises(NodeTypeError) as err:
root.right = "this_is_not_a_node"
assert root.right is right_child
assert str(err.value) == "right child must be a Node instance"