code: def test_install_failed(self):
      # creation failed because no such node.
      assert not self.ray_installer.install_ray(
          Instance(
              instance_id="0",
              instance_type="worker_nodes1",
              cloud_instance_id="0",
          ),
          head_node_ip="1.2.3.4",
      )
  
      self.base_provider.create_node(
          {}, {TAG_RAY_NODE_KIND: "worker_nodes1"}, 1
      )
      self.runner.fail_cmds = ["setup_cmd"]
      self.runner.respond_to_call(
          "json .Config.Env", ["[]" for i in range(1)]
      )
  
      # creation failed because setup command failed.
      assert self.ray_installer.install_ray(
          Instance(
              instance_id="0",
              instance_type="worker_nodes1",
              cloud_instance_id="0",
          ),
          head_node_ip="1.2.3.4",
      )
  
file_path: ray/python/ray/autoscaler/v2/tests/test_ray_installer.py
imports: import os
  import sys
  import unittest
  import pytest
  from ray._private.test_utils import load_test_config
  from ray.autoscaler.tags import TAG_RAY_NODE_KIND
  from ray.autoscaler.v2.instance_manager.config import AutoscalingConfig
  from ray.autoscaler.v2.instance_manager.ray_installer import RayInstaller
  from ray.core.generated.instance_manager_pb2 import Instance
  from ray.tests.autoscaler_test_utils import MockProcessRunner, MockProvider
label_desc: Use image node_id 3 for calling the RayInstallerTest obj's underlying member method code with example usage: obj.test_install_failed() without return types