def test_seed(self):
init_seed = 234
random = RandomStream(init_seed)
ref_state = np.random.RandomState(init_seed).get_state()
random_state = random.gen_seedgen.get_state()
assert random.default_instance_seed == init_seed
assert np.array_equal(random_state[1], ref_state[1])
assert random_state[0] == ref_state[0]
assert random_state[2:] == ref_state[2:]
new_seed = 43298
random.seed(new_seed)
ref_state = np.random.RandomState(new_seed).get_state()
random_state = random.gen_seedgen.get_state()
assert np.array_equal(random_state[1], ref_state[1])
assert random_state[0] == ref_state[0]
assert random_state[2:] == ref_state[2:]
random.seed()
ref_state = np.random.RandomState(init_seed).get_state()
random_state = random.gen_seedgen.get_state()
assert random.default_instance_seed == init_seed
assert np.array_equal(random_state[1], ref_state[1])
assert random_state[0] == ref_state[0]
assert random_state[2:] == ref_state[2:]
# Reset the seed
random.seed(new_seed)
# Check state updates
_ = random.normal()
# Now, change the seed when there are state updates
random.seed(new_seed)
rng = np.random.RandomState(new_seed)
update_seed = rng.randint(2**30)
ref_state = np.random.RandomState(update_seed).get_state()
random_state = random.state_updates[0][0].get_value(
borrow=True).get_state()
assert np.array_equal(random_state[1], ref_state[1])
assert random_state[0] == ref_state[0]
assert random_state[2:] == ref_state[2:]
def test_seed(self, rng_ctor):
init_seed = 234
random = RandomStream(init_seed, rng_ctor=rng_ctor)
assert random.default_instance_seed == init_seed
new_seed = 43298
random.seed(new_seed)
rng_seed = np.random.SeedSequence(new_seed)
assert random.gen_seedgen.entropy == rng_seed.entropy
random.seed()
rng_seed = np.random.SeedSequence(init_seed)
assert random.gen_seedgen.entropy == rng_seed.entropy
# Reset the seed
random.seed(new_seed)
# Check state updates
_ = random.normal()
# Now, change the seed when there are state updates
random.seed(new_seed)
update_seed = np.random.SeedSequence(new_seed)
(update_seed, ) = update_seed.spawn(1)
ref_rng = random.rng_ctor(update_seed)
state_rng = random.state_updates[0][0].get_value(borrow=True)
if hasattr(state_rng, "get_state"):
ref_state = ref_rng.get_state()
random_state = state_rng.get_state()
assert np.array_equal(random_state[1], ref_state[1])
assert random_state[0] == ref_state[0]
assert random_state[2:] == ref_state[2:]
else:
ref_state = ref_rng.__getstate__()
random_state = state_rng.__getstate__()
assert random_state["bit_generator"] == ref_state["bit_generator"]
assert random_state["state"] == ref_state["state"]