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16d082b002
Instead of exposing a constructor, only expose a function that returns an opaque object representing the defined implementation. This result can still be passed to `jax.random.key` and `wrap_key_data`. PiperOrigin-RevId: 578349699
86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
# Copyright 2023 The JAX Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from absl.testing import absltest
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import jax
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import jax.extend as jex
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import jax.numpy as jnp
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from jax._src import abstract_arrays
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from jax._src import linear_util
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from jax._src import prng
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from jax._src import test_util as jtu
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from jax import config
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config.parse_flags_with_absl()
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class ExtendTest(jtu.JaxTestCase):
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def test_symbols(self):
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# Assume these are tested in random_test.py, only check equivalence
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self.assertIs(jex.random.seed_with_impl, prng.seed_with_impl)
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self.assertIs(jex.random.threefry2x32_p, prng.threefry2x32_p)
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self.assertIs(jex.random.threefry_2x32, prng.threefry_2x32)
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self.assertIs(jex.random.threefry_prng_impl, prng.threefry_prng_impl)
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self.assertIs(jex.random.rbg_prng_impl, prng.rbg_prng_impl)
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self.assertIs(jex.random.unsafe_rbg_prng_impl, prng.unsafe_rbg_prng_impl)
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# Assume these are tested elsewhere, only check equivalence
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self.assertIs(jex.core.array_types, abstract_arrays.array_types)
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self.assertIs(jex.linear_util.StoreException, linear_util.StoreException)
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self.assertIs(jex.linear_util.WrappedFun, linear_util.WrappedFun)
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self.assertIs(jex.linear_util.cache, linear_util.cache)
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self.assertIs(jex.linear_util.merge_linear_aux, linear_util.merge_linear_aux)
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self.assertIs(jex.linear_util.transformation, linear_util.transformation)
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self.assertIs(jex.linear_util.transformation_with_aux, linear_util.transformation_with_aux)
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self.assertIs(jex.linear_util.wrap_init, linear_util.wrap_init)
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class RandomTest(jtu.JaxTestCase):
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def test_key_make_with_custom_impl(self):
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shape = (4, 2, 7)
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def seed_rule(_):
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return jnp.ones(shape, dtype=jnp.dtype('uint32'))
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def no_rule(*args, **kwargs):
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assert False, 'unreachable'
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impl = jex.random.define_prng_impl(
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key_shape=shape, seed=seed_rule, split=no_rule, fold_in=no_rule,
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random_bits=no_rule)
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k = jax.random.key(42, impl=impl)
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self.assertEqual(k.shape, ())
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self.assertEqual(impl, jax.random.key_impl(k))
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def test_key_wrap_with_custom_impl(self):
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def no_rule(*args, **kwargs):
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assert False, 'unreachable'
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shape = (4, 2, 7)
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impl = jex.random.define_prng_impl(
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key_shape=shape, seed=no_rule, split=no_rule, fold_in=no_rule,
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random_bits=no_rule)
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data = jnp.ones((3, *shape), dtype=jnp.dtype('uint32'))
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k = jax.random.wrap_key_data(data, impl=impl)
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self.assertEqual(k.shape, (3,))
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self.assertEqual(impl, jax.random.key_impl(k))
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if __name__ == "__main__":
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absltest.main(testLoader=jtu.JaxTestLoader())
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