def test_init():
node_1 = Node()
assert node_1.name is None
assert node_1.altitude is None
assert node_1.parent is None
assert node_1.left is None
assert node_1.right is None
node_2 = Node(name="NomTest")
assert node_2.name is "NomTest"
assert node_2.altitude is None
assert node_2.parent is None
assert node_2.left is None
assert node_2.right is None
node_3 = Node(name="NodeTrois", left=node_2)
assert node_3.name is "NodeTrois"
assert node_3.left is node_2
# Test binds corrects (node_3->node_2)
assert node_3.left == node_2
assert node_3.left.name == "NomTest"
assert node_2.parent is node_3
node_4 = Node(name="Node4", altitude=42100, parent=node_1, right=node_3)
assert node_4.parent is node_1
assert node_4.parent == node_1
node_5 = Node(name="Node5", altitude=300)
node_6 = Node(name="NodeSix", altitude=120)
node_7 = Node(name="Node7ven", altitude=10)
node_8 = Node(name="Node8",
altitude=42,
parent=node_5,
left=node_6,
right=node_7)
assert node_8.right is node_7
assert node_7.parent is node_8
assert node_8.left is node_6
assert node_6.parent is node_8
assert node_8.parent is node_5
assert node_5.left is node_8
assert node_5.is_leaf() is False and node_6.is_leaf(
) is True and node_7.is_leaf() is True
def test_is_leaf():
node_1 = Node(name="I", altitude=100)
assert node_1.is_leaf() is True
node_2 = Node(name="II", altitude=13350, left=node_1)
assert node_2.is_leaf() is False