def test_general_functions(self): # XX
print("Running test_general_functions")
# Add a number of elements to at least prevent some possible toy-example working out
h = AVL([50, 70, 80, 60, 55, 67, 90, 57, 20, 10, 15, 0])
self.assertEqual(h.find_min(), 0)
self.assertEqual(h.find_max(), 90)
self.assertFalse(h.is_empty())
n = h.search(67)
m = h.search(99)
self.assertTrue(isinstance(n, Node))
self.assertEqual(n.get_key(), 67)
self.assertEqual(m, None)
self.assertTrue(h.contains(67))
self.assertFalse(h.contains(100))
