code: def test_bad_blobs(self, data, blob_args):
      error, names, groups = blob_args
      with pytest.raises(error):
          from_emcee(data.obj, blob_names=names, blob_groups=groups)
  
imports: import os
  import numpy
  import pytest
  from ...None import from_emcee
  from ..helpers import _emcee_lnprior
  from ..helpers import _emcee_lnprob
  from ..helpers import chains, check_multiple_attrs, draws, eight_schools_params, importorskip, load_cached_models, needs_emcee3_func
label_desc: Use image node_id 11 for calling the TestDataEmcee obj's underlying member method code with example usage: obj.test_bad_blobs(data, blob_args) without return types