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# Copyright 2020 DeepMind Technologies Limited. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tests for dm_pix API."""
import inspect
from absl.testing import absltest
from absl.testing import parameterized
import dm_pix as pix
from dm_pix._src import test_utils
class ApiTest(parameterized.TestCase):
@parameterized.named_parameters(*test_utils.get_public_functions(pix))
def test_key_argument(self, f):
sig = inspect.signature(f)
param_names = tuple(sig.parameters)
self.assertNotIn("rng", param_names,
"Prefer `key` to `rng` in PIX (following JAX).")
if "key" in param_names:
self.assertLess(
param_names.index("key"), param_names.index("image"),
"RNG `key` argument should be before `image` in PIX.")
@parameterized.named_parameters(*test_utils.get_public_functions(pix))
def test_kwarg_only_defaults(self, f):
argspec = inspect.getfullargspec(f)
if f.__name__ == "rot90":
# Special case for `k` in rot90.
self.assertLen(argspec.defaults, 1)
return
self.assertEmpty(
argspec.defaults or (),
"Optional keyword arguments in PIX should be keyword "
"only. Prefer `f(x, *, axis=-1)` to `f(x, axis=-1)`.")
if __name__ == "__main__":
absltest.main()