docstr: Test cache dir path.
          
docstr_tok: ["Test","cache","dir","path","."]
code: def test_resolve_cache_dir(self):
      """Test cache dir path."""
      TEST_NEMO_ENV_CACHE_DIR = "TEST_NEMO_ENV_CACHE_DIR"
      with mock.patch(
          "nemo.constants.NEMO_ENV_CACHE_DIR", TEST_NEMO_ENV_CACHE_DIR
      ):
          envar_to_resolved_path = {
              "/path/to/cache": "/path/to/cache",
              "relative/path": os.path.join(
                  os.getcwd(), "relative/path"
              ),
              "": os.path.expanduser(
                  f"~/.cache/torch/NeMo/NeMo_{NEMO_VERSION}"
              ),
          }
  
          for envar, expected_path in envar_to_resolved_path.items():
              # Set envar
              os.environ[TEST_NEMO_ENV_CACHE_DIR] = envar
              # Check path
              uut_path = resolve_cache_dir().as_posix()
              assert (
                  uut_path == expected_path
              ), f"Expected: {expected_path}, got {uut_path}"
  
file_path: NeMo/tests/utils/test_utils.py
imports: import os
  from unittest import mock
  import pytest
  from nemo import __version__
  from nemo.utils.data_utils import ais_binary, ais_endpoint_to_dir, bucket_and_object_from_uri, datastore_path_to_webdataset_url, is_datastore_path, resolve_cache_dir
label_desc: Use image node_id 1 for calling the TestDataUtils obj's underlying member method code with example usage: obj.test_resolve_cache_dir() without return types