def test_extract_min():
for _ in range(100):
heap = MinHeap()
values = [randrange(0, 1000) for _ in range(100)]
heap.add_all(values)
values.sort()
k = 0
for val in values:
assert values[k] == val
k += 1
def test_is_empty():
heap = MinHeap()
assert heap.is_empty()
heap.add_all([randrange(0, 1000) for _ in range(0, randrange(1, 100))])
