new_contents: """ Tests for finding pre-packaged regressors
  """
  import os
  
  import pytest
  import sklearn.externals.joblib as jl
  
  from yatsm.regression import packaged
  
  
  @pytest.mark.parametrize('name', packaged.packaged_regressions,
                           ids=packaged.packaged_regressions)
  def test_packaged_regressors(name):
      fname = packaged.find_packaged_regressor(name)
      assert os.path.isfile(fname)
      jl.load(fname)
  
  
  @pytest.mark.parametrize('name', ['asdf', 'foobar'])
  def test_unknown_regressor(name):
      with pytest.raises(KeyError):
          packaged.find_packaged_regressor(name)
  
subject: Add tests for packaged regressions; closes #41