def test__update_metadata(self):
"""Test ``_update_metadata`` if metadata has no model_kwargs.
If ``self._metadata`` has no ``model_kwargs`` in it, this
method should prepare the ``model_kwargs`` dict and call
``self._metadata.set_model_kwargs`` with it.
Setup:
- self._metadata.get_model_kwargs that returns None.
- self.get_distributions that returns a distribution dict.
Expected Output
- None
Side Effects
- ``self._metadata.set_model_kwargs`` is called with the
expected dict.
"""
# Setup
gaussian_copula = Mock(spec_set=GaussianCopula)
gaussian_copula._metadata.get_model_kwargs.return_value = dict()
gaussian_copula._categorical_transformer = 'a_categorical_transformer_value'
gaussian_copula._default_distribution = 'a_distribution'
gaussian_copula.get_distributions.return_value = {
'foo': 'copulas.univariate.gaussian.GaussianUnivariate'
}
# Run
out = GaussianCopula._update_metadata(gaussian_copula)
# Asserts
assert out is None
expected_kwargs = {
'field_distributions': {
'foo': 'copulas.univariate.gaussian.GaussianUnivariate'
},
'default_distribution': 'a_distribution',
'categorical_transformer': 'a_categorical_transformer_value',
}
gaussian_copula._metadata.set_model_kwargs.assert_called_once_with(
'GaussianCopula', expected_kwargs)
def test__update_metadata_existing_model_kargs(self):
"""Test ``_update_metadata`` if metadata already has model_kwargs.
If ``self._metadata`` already has ``model_kwargs`` in it, this
method should do nothing.
Setup:
- self._metadata.get_model_kwargs that returns a kwargs dict
Expected Output
- None
Side Effects
- ``self._metadata.set_model_kwargs`` is not called.
"""
# Setup
gaussian_copula = Mock(spec_set=GaussianCopula)
# Run
out = GaussianCopula._update_metadata(gaussian_copula)
# Asserts
assert out is None
assert not gaussian_copula._metadata.set_model_kwargs.called
