def test_deterministic(space: Space, n: int, base_seed: int):
"""Tests the batched spaces are deterministic by using a copied version"""
# Copy the spaces and check that the np_random are not reference equal
space_a = space
space_a.seed(base_seed)
space_b = copy.deepcopy(space_a)
assert_rng_equal(space_a.np_random, space_b.np_random)
assert space_a.np_random is not space_b.np_random
# Batch the spaces and check that the np_random are not reference equal
space_a_batched = batch_space(space_a, n)
space_b_batched = batch_space(space_b, n)
assert_rng_equal(space_a_batched.np_random, space_b_batched.np_random)
assert space_a_batched.np_random is not space_b_batched.np_random
# Create that the batched space is not reference equal to the origin spaces
assert space_a.np_random is not space_a_batched.np_random
# Check that batched space a and b random number generator are not effected by the original space
space_a.sample()
space_a_batched_sample = space_a_batched.sample()
space_b_batched_sample = space_b_batched.sample()
for a_sample, b_sample in zip(
iterate(space_a_batched, space_a_batched_sample),
iterate(space_b_batched, space_b_batched_sample),
):
if isinstance(a_sample, tuple):
assert len(a_sample) == len(b_sample)
for a_subsample, b_subsample in zip(a_sample, b_sample):
assert_array_equal(a_subsample, b_subsample)
else:
assert_array_equal(a_sample, b_sample)
def test_rng_different_at_each_index(space: Space, n: int, base_seed: int):
"""
Tests that the rng values produced at each index are different
to prevent if the rng is copied for each subspace
"""
space.seed(base_seed)
batched_space = batch_space(space, n)
assert space.np_random is not batched_space.np_random
assert_rng_equal(space.np_random, batched_space.np_random)
batched_sample = batched_space.sample()
sample = list(iterate(batched_space, batched_sample))
assert not all(np.all(element == sample[0]) for element in sample), sample
def test_iterate_custom_space(space, batch_space):
items = batch_space.sample()
iterator = iterate(batch_space, items)
for i, item in enumerate(iterator):
assert item in space
assert i == 3
