def test_create_binary_tree_with_list_and_insert_list():
binary_tree = BinaryTree([4, 7])
assert isinstance(binary_tree, BinaryTree)
binary_tree.add([5, 6, 8])
assert binary_tree.level_order_traversal() == [4, 7, 5, 6, 8]
def test_create_binary_tree():
binary_tree = BinaryTree()
assert isinstance(binary_tree, BinaryTree)
def test_create_binary_tree_with_int_and_insert_list():
binary_tree = BinaryTree(3)
assert isinstance(binary_tree, BinaryTree)
binary_tree.add([4, 5])
assert binary_tree.level_order_traversal() == [3, 4, 5]
def test_level_order_traversal_from_inserted_list():
binary_tree = BinaryTree([4, 5, 6, 7, 8, 9])
assert binary_tree.level_order_traversal() == [4, 5, 6, 7, 8, 9]
def test_level_order_traversal_from_inserted_int():
binary_tree = BinaryTree(4)
assert binary_tree.level_order_traversal() == [4]
def test_create_binary_tree_passing_list():
binary_tree = BinaryTree([4, 5, 6, 7])
assert isinstance(binary_tree, BinaryTree)
def test_create_binary_tree_passing_int():
binary_tree = BinaryTree(4)
assert isinstance(binary_tree, BinaryTree)