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# Copyright 2018 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.
# ==============================================================================
"""Tests for SharedVariableCreator."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.contrib.distribute.python import shared_variable_creator
from tensorflow.python.eager import test
from tensorflow.python.framework import test_util
from tensorflow.python.ops import variable_scope
class CanonicalizeVariableNameTest(test.TestCase):
def _canonicalize(self, name):
return shared_variable_creator._canonicalize_variable_name(name)
def testNoName(self):
self.assertEquals("Variable", self._canonicalize(None))
def testPatternInMiddle(self):
self.assertEquals("foo/bar/baz", self._canonicalize("foo_1/bar_1/baz"))
def testPatternAtEnd(self):
self.assertEquals("foo", self._canonicalize("foo_1"))
def testWrongPatterns(self):
self.assertEquals("foo_1:0", self._canonicalize("foo_1:0"))
self.assertEquals("foo1", self._canonicalize("foo1"))
self.assertEquals("foo_a", self._canonicalize("foo_a"))
class SharedVariableCreatorTest(test.TestCase):
@test_util.run_in_graph_and_eager_modes
def testSharedVariable(self):
shared_variable_store = {}
num_devices = 3
creator_fns = []
for i in range(num_devices):
creator_fn = shared_variable_creator.make_fn(shared_variable_store, i)
creator_fns.append(creator_fn)
with variable_scope.variable_creator_scope(creator_fns[0]):
v0 = variable_scope.variable(1.0, name="foo")
with variable_scope.variable_creator_scope(creator_fns[1]):
v1 = variable_scope.variable(1.0, name="foo")
with variable_scope.variable_creator_scope(creator_fns[2]):
v2 = variable_scope.variable(1.0, name="foo")
# v1 and v2 should be same as v0
self.assertIs(v1, v0)
self.assertIs(v2, v0)
if __name__ == "__main__":
test.main()
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