def test_node_with_one_equal_child_is_max_heap(self):
child_node = Node(10)
node = Node(10, left=child_node, right=None)
self.assertTrue(node.is_max_heap())
node = Node(10, left=None, right=child_node)
self.assertTrue(node.is_max_heap())
def test_node_with_smaller_children_is_max_heap(self):
left_child = Node(1)
right_child = Node(2)
node = Node(10, left=left_child, right=right_child)
self.assertTrue(node.is_max_heap())
def test_single_node_is_max_heap(self):
node = Node('single')
self.assertTrue(node.is_max_heap())
def test_max_heapify(self):
n_value, l_value, r_value = 10, 20, 5
node = Node(n_value, left=Node(l_value), right=Node(r_value))
self.assertFalse(node.is_max_heap())
node.heapify(heap_type=HEAP_TYPE.MAX)
self.assertTrue(node.is_max_heap())