code: def test_yaml_file_none_fail(self):
      with pytest.raises(merrors.MetricsCacheTypeError) as exc_info:
          MetricsCacheYamlImpl(None)
      assert (
          "stat: path should be string, bytes, os.PathLike or integer, not NoneType"
          in str(exc_info.value)
      )
  
imports: import os
  import uuid
  import pytest
  import ts.metrics.metric_cache_errors
  from ts.metrics.caching_metric import CachingMetric
  from ts.metrics.dimension import Dimension
  from ts.metrics.metric_cache_yaml_impl import MetricsCacheYamlImpl
  from ts.metrics.metric_type_enum import MetricTypes
label_desc: Use image node_id 3 for calling the TestParseYaml obj's underlying member method code with example usage: obj.test_yaml_file_none_fail() without return types