code: def test_in_network():
      """Utils - In Network"""
      cidrs = {"10.0.16.0/24", "10.0.17.0/24"}
  
      ip_in_cidr = "10.0.16.24"
      assert_equal(utils.in_network(ip_in_cidr, cidrs), True)
  
      ip_not_in_cidr = "10.0.15.24"
      assert_equal(utils.in_network(ip_not_in_cidr, cidrs), False)
  
file_path: streamalert/tests/unit/streamalert/shared/test_utils.py
imports: import json
  from nose.tools import assert_equal, assert_false
  from streamalert.shared import utils
  from streamalert.shared.normalize import Normalizer
label_desc: Use image node_id 4 for calling a global function with example usage: test_in_network() without return types