def test_generate_instance(instance_generator):
"""Use stateless instance generating function."""
if isinstance(instance_generator, ecole.instance.FileGenerator):
pytest.skip("No generate_instance for file loaders")
InstanceGenerator = type(instance_generator)
model = InstanceGenerator.generate_instance(
random_engine=ecole.RandomEngine())
assert isinstance(model, ecole.scip.Model)
def test_RandomEngine():
"""Test bindings of the RandomEngine."""
assert ecole.RandomEngine.min_seed < ecole.RandomEngine.max_seed
random_engine = ecole.RandomEngine(42)
rand_val_1 = random_engine()
assert isinstance(rand_val_1, int)
random_engine.seed(42)
rand_val_2 = random_engine()
assert rand_val_1 == rand_val_2
def test_RandomEngine_copy():
"""Copy create a new RandomEngine with same state."""
random_engine = ecole.RandomEngine(42)
random_engine_copy = copy.copy(random_engine)
assert random_engine_copy == random_engine
assert random_engine_copy is not random_engine
random_engine_deepcopy = copy.deepcopy(random_engine)
assert random_engine_deepcopy == random_engine
assert random_engine_deepcopy is not random_engine
def test_seed():
"""Random engine is consumed."""
env = MockEnvironment()
env.seed(33)
assert env.random_engine == ecole.RandomEngine(33)
def test_generate_instance(instance_generator):
"""Use stateless instance generating function."""
InstanceGenerator = type(instance_generator)
model = InstanceGenerator.generate_instance(
random_engine=ecole.RandomEngine())
assert isinstance(model, ecole.scip.Model)
def test_random_engine_init(instance_generator):
"""Construct a random engine."""
type(instance_generator)(random_engine=ecole.RandomEngine())
def test_RandomEngine_pickle():
"""Pickle preserve the state of the RandomEngine."""
random_engine = ecole.RandomEngine(42)
assert random_engine == pickle.loads(pickle.dumps(random_engine))
def test_set_random_state(self, model):
"""Random engine is consumed."""
random_engine = ecole.RandomEngine(33)
self.dynamics.set_dynamics_random_state(model, random_engine)
assert random_engine != ecole.RandomEngine(33)
def test_random_engine_init(instance_generator):
"""Construct a random engine."""
if isinstance(instance_generator, ecole.instance.FileGenerator):
pytest.skip("No dataset in default directory")
type(instance_generator)(random_engine=ecole.RandomEngine())