code: def test(self):
      assert dist.is_initialized()
      assert dist.get_world_size() == 3
      assert dist.get_rank() < 3
  
imports: import os
  import torch
  import deepspeed.comm
  import deepspeed
  from unit.common import DistributedTest, DistributedFixture, get_master_port
  from unit.simple_model import SimpleModel
  from deepspeed.accelerator import get_accelerator
  import pytest
  from deepspeed.ops.op_builder import FusedAdamBuilder
label_desc: Use image node_id 1 for calling the TestInit obj's underlying member method code with example usage: obj.test() without return types