Write a function to merge multiple sorted inputs into a single sorted iterator using heap queue algorithm.
import heapq
def merge_sorted_list(num1,num2,num3):
  num1=sorted(num1)
  num2=sorted(num2)
  num3=sorted(num3)
  result = heapq.merge(num1,num2,num3)
  return list(result)
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a function to merge multiple sorted inputs into a single sorted iterator using heap queue algorithm.
import heapq
def merge_sorted_list(num1,num2,num3):
  num1=sorted(num1)
  num2=sorted(num2)
  num3=sorted(num3)
  result = heapq.merge(num1,num2,num3)
  return list(result)[/INST]assert merge_sorted_list([25, 24, 15, 4, 5, 29, 110],[19, 20, 11, 56, 25, 233, 154],[24, 26, 54, 48])==[4, 5, 11, 15, 19, 20, 24, 24, 25, 25, 26, 29, 48, 54, 56, 110, 154, 233]
assert merge_sorted_list([1, 3, 5, 6, 8, 9], [2, 5, 7, 11], [1, 4, 7, 8, 12])==[1, 1, 2, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9, 11, 12]
assert merge_sorted_list([18, 14, 10, 9, 8, 7, 9, 3, 2, 4, 1],[25, 35, 22, 85, 14, 65, 75, 25, 58],[12, 74, 9, 50, 61, 41])==[1, 2, 3, 4, 7, 8, 9, 9, 9, 10, 12, 14, 14, 18, 22, 25, 25, 35, 41, 50, 58, 61, 65, 74, 75, 85]</s>