code: def test_vars_interpolation_errors(tmp_dir, dvc, vars_):
      with pytest.raises(ResolveError) as exc_info:
          DataResolver(
              dvc, tmp_dir.fs_path, {"vars": [vars_, {"bar": "foo"}]}
          )
      assert (
          str(exc_info.value)
          == "failed to parse 'vars' in 'dvc.yaml': interpolating is not allowed"
      )
  
imports: from copy import deepcopy
  import pytest
  from dvc.parsing import DEFAULT_PARAMS_FILE, DataResolver, ResolveError
  from dvc.parsing.context import Context
  from dvc.utils.serialize import dumps_yaml
  from .None import CONTEXT_DATA, RESOLVED_DVC_YAML_DATA, TEMPLATED_DVC_YAML_DATA
label_desc: Use image node_id 5 for calling a global function with example usage: test_vars_interpolation_errors(tmp_dir, dvc, vars_) without return types