def test_left_one(self):
max_heap = MaxHeap([1])
left = max_heap.left(1)
self.assertEquals(3,left)
def test_left_two(self):
max_heap = MaxHeap([1])
left = max_heap.left(2)
self.assertEquals(5,left)
def test_left_zero(self):
max_heap = MaxHeap([1])
left = max_heap.left(0)
self.assertEquals(1,left)