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tensorflow--tensorflow/tensorflow/python/util/lazy_loader_test.py
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# Copyright 2023 The TensorFlow Authors. 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.
# ==============================================================================
"""lazy loader tests."""
# pylint: disable=unused-import
import doctest
import inspect
import pickle
import types
from tensorflow.python.platform import test
from tensorflow.python.platform import tf_logging as logging
from tensorflow.python.util import lazy_loader
from tensorflow.python.util import tf_inspect
class LazyLoaderTest(test.TestCase):
def testDocTestDoesNotLoad(self):
module = types.ModuleType("mytestmodule")
module.foo = lazy_loader.LazyLoader("foo", module.__dict__, "os.path")
self.assertIsInstance(module.foo, lazy_loader.LazyLoader)
finder = doctest.DocTestFinder()
finder.find(module)
self.assertIsInstance(module.foo, lazy_loader.LazyLoader)
@test.mock.patch.object(logging, "warning", autospec=True)
def testLazyLoaderMock(self, mock_warning):
name = LazyLoaderTest.__module__
lazy_loader_module = lazy_loader.LazyLoader(
"lazy_loader_module", globals(), name, warning="Test warning.")
self.assertEqual(0, mock_warning.call_count)
lazy_loader_module.foo = 0
self.assertEqual(1, mock_warning.call_count)
foo = lazy_loader_module.foo
self.assertEqual(1, mock_warning.call_count)
# Check that values stayed the same
self.assertEqual(lazy_loader_module.foo, foo)
class PickleTest(test.TestCase):
def testPickleLazyLoader(self):
name = PickleTest.__module__ # Try to pickle current module.
lazy_loader_module = lazy_loader.LazyLoader(
"lazy_loader_module", globals(), name)
restored = pickle.loads(pickle.dumps(lazy_loader_module))
self.assertEqual(restored.__name__, name)
self.assertIsNotNone(restored.PickleTest)
if __name__ == "__main__":
test.main()