code: def setUp(self):
      self.base_provider = MockProvider()
      self.config = AutoscalingConfig(
          load_test_config("test_ray_complex.yaml")
      )
      self.runner = MockProcessRunner()
      self.ray_installer = RayInstaller(
          self.base_provider, self.config, self.runner
      )
  
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 1 for calling the RayInstallerTest obj's underlying member method code with example usage: obj.setUp() without return types