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# Copyright 2017 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.
# ==============================================================================
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.python.platform import test
from tensorflow.python.training.checkpointable import tracking
class InterfaceTests(test.TestCase):
def testMultipleAssignment(self):
root = tracking.Checkpointable()
root.leaf = tracking.Checkpointable()
root.leaf = root.leaf
duplicate_name_dep = tracking.Checkpointable()
with self.assertRaises(ValueError):
root._track_checkpointable(duplicate_name_dep, name="leaf")
# No error; we're overriding __setattr__, so we can't really stop people
# from doing this while maintaining backward compatibility.
root.leaf = duplicate_name_dep
root._track_checkpointable(duplicate_name_dep, name="leaf", overwrite=True)
def testNoDependency(self):
root = tracking.Checkpointable()
hasdep = tracking.Checkpointable()
root.hasdep = hasdep
nodep = tracking.Checkpointable()
root.nodep = tracking.NoDependency(nodep)
self.assertEqual(1, len(root._checkpoint_dependencies))
self.assertIs(root._checkpoint_dependencies[0].ref, root.hasdep)
self.assertIs(root.hasdep, hasdep)
self.assertIs(root.nodep, nodep)
if __name__ == "__main__":
test.main()
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