def test_intialise_resume(sampler):
"""Test the initialise method when being used after resuming.
In this case the live points are not None
"""
sampler._flow_proposal = MagicMock()
sampler._uninformed_proposal = MagicMock()
sampler.populate_live_points = MagicMock()
sampler._flow_proposal.initialised = False
sampler._uninformed_proposal.initialised = False
sampler.live_points = [0.0]
sampler.iteration = 100
sampler.maximum_uninformed = 10
sampler.condition = 1.0
sampler.tolerance = 0.1
sampler.initialised = False
NestedSampler.initialise(sampler)
sampler._flow_proposal.initialise.assert_called_once()
sampler._uninformed_proposal.initialise.assert_called_once()
sampler.populate_live_points.assert_not_called()
assert sampler.initialised is False
assert sampler.proposal is sampler._flow_proposal
sampler.proposal.configure_pool.assert_called_once()
def test_intialise(sampler):
"""Test the initialise method when being used without resuming"""
sampler._flow_proposal = MagicMock()
sampler._uninformed_proposal = MagicMock()
sampler.populate_live_points = MagicMock()
sampler._flow_proposal.initialised = False
sampler._uninformed_proposal.initialised = False
sampler.live_points = None
sampler.iteration = 0
sampler.maximum_uninformed = 10
sampler.condition = 1.0
sampler.tolerance = 0.1
sampler.initialised = False
sampler.uninformed_sampling = True
NestedSampler.initialise(sampler)
sampler._flow_proposal.initialise.assert_called_once()
sampler._uninformed_proposal.initialise.assert_called_once()
sampler.populate_live_points.assert_called_once()
assert sampler.initialised is True
assert sampler.proposal is sampler._uninformed_proposal
sampler.proposal.configure_pool.assert_called_once()
def complete_sampler(model, tmpdir):
"""Complete instance of NestedSampler"""
output = tmpdir.mkdir('output')
ns = NestedSampler(model, output=output, poolsize=10)
ns.initialise()
return ns
