code: def test_network_interface_missing_subnet():
      # If NetworkInterfaces are defined, each must have a subnet ID
      expected_error_msg = (
          "NetworkInterfaces are defined but at least one is "
          "missing a subnet. Please ensure all interfaces "
          "have a subnet assigned."
      )
      config = helpers.load_aws_example_config_file(
          "example-network-interfaces.yaml"
      )
      for name, node_type in config["available_node_types"].items():
          node_cfg = node_type["node_config"]
          for network_interface_cfg in node_cfg["NetworkInterfaces"]:
              network_interface_cfg.pop("SubnetId")
              with pytest.raises(ValueError, match=expected_error_msg):
                  helpers.bootstrap_aws_config(config)
  
imports: import copy
  from unittest.mock import Mock, patch
  import pytest
  from click.exceptions import ClickException
  import ray.tests.aws.utils.helpers
  import ray.tests.aws.utils.stubs
  from ray.autoscaler._private.aws.config import DEFAULT_AMI, _configure_subnet, _get_subnets_or_die, bootstrap_aws, log_to_cli
  from ray.autoscaler._private.aws.node_provider import AWSNodeProvider
  from ray.autoscaler._private.providers import _get_node_provider
  from ray.tests.aws.utils.constants import AUX_SG, AUX_SUBNET, CUSTOM_IN_BOUND_RULES, DEFAULT_CLUSTER_NAME, DEFAULT_INSTANCE_PROFILE, DEFAULT_KEY_PAIR, DEFAULT_LT, DEFAULT_SG, DEFAULT_SG_AUX_SUBNET, DEFAULT_SG_DUAL_GROUP_RULES, DEFAULT_SG_WITH_NAME, DEFAULT_SG_WITH_NAME_AND_RULES, DEFAULT_SG_WITH_RULES, DEFAULT_SG_WITH_RULES_AUX_SUBNET, DEFAULT_SUBNET
label_desc: Use image node_id 12 for calling a global function with example usage: test_network_interface_missing_subnet() without return types