def test_configure_latent_prior_var(proposal):
"""
Test the latent prior when using a truncated Gaussian with a variance.
"""
proposal.latent_prior = 'truncated_gaussian'
proposal.flow_config = {'model_config': {'kwargs': {'var': 4}}}
proposal.draw_latent_kwargs = {}
FlowProposal.configure_latent_prior(proposal)
assert proposal.draw_latent_prior == \
getattr(utils, 'draw_truncated_gaussian')
assert proposal.draw_latent_kwargs.get('var') == 4
def test_configure_latent_prior(proposal, latent_prior, prior_func):
"""Test to make sure the correct latent priors are used."""
proposal.latent_prior = latent_prior
proposal.flow_config = {'model_config': {}}
FlowProposal.configure_latent_prior(proposal)
assert proposal.draw_latent_prior == getattr(utils, prior_func)
def test_configure_latent_prior_unknown(proposal):
"""Make sure unknown latent priors raise an error"""
proposal.latent_prior = 'truncated'
with pytest.raises(RuntimeError) as excinfo:
FlowProposal.configure_latent_prior(proposal)
assert 'Unknown latent prior: truncated, ' in str(excinfo.value)
