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# Copyright 2016 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 contrib.copy_graph.python.util.copy."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.contrib.copy_graph.python.util import copy_elements
from tensorflow.python.client import session as session_lib
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import ops
from tensorflow.python.ops import array_ops
from tensorflow.python.ops import math_ops
from tensorflow.python.ops import variables
from tensorflow.python.platform import test
class CopyVariablesTest(test.TestCase):
def setUp(self):
self.graph1 = ops.Graph()
self.graph2 = ops.Graph()
def testVariableCopy(self):
with self.graph1.as_default():
#Define a Variable in graph1
some_var = variables.VariableV1(2)
#Initialize session
sess1 = session_lib.Session()
#Initialize the Variable
variables.global_variables_initializer().run(session=sess1)
#Make a copy of some_var in the defsult scope in graph2
copy1 = copy_elements.copy_variable_to_graph(some_var, self.graph2)
#Make another copy with different scope
copy2 = copy_elements.copy_variable_to_graph(some_var,
self.graph2,
"test_scope")
#Initialize both the copies
with self.graph2.as_default():
#Initialize Session
sess2 = session_lib.Session()
#Initialize the Variables
variables.global_variables_initializer().run(session=sess2)
#Ensure values in all three variables are the same
v1 = some_var.eval(session=sess1)
v2 = copy1.eval(session=sess2)
v3 = copy2.eval(session=sess2)
assert isinstance(copy1, variables.Variable)
assert isinstance(copy2, variables.Variable)
assert v1 == v2 == v3 == 2
class CopyOpsTest(test.TestCase):
def setUp(self):
self.graph1 = ops.Graph()
self.graph2 = ops.Graph()
def testOpsCopy(self):
with self.graph1.as_default():
#Initialize a basic expression y = ax + b
x = array_ops.placeholder("float")
a = variables.VariableV1(3.0)
b = constant_op.constant(4.0)
ax = math_ops.multiply(x, a)
y = math_ops.add(ax, b)
#Initialize session
sess1 = session_lib.Session()
#Initialize the Variable
variables.global_variables_initializer().run(session=sess1)
#First, initialize a as a Variable in graph2
a1 = copy_elements.copy_variable_to_graph(a, self.graph2)
#Initialize a1 in graph2
with self.graph2.as_default():
#Initialize session
sess2 = session_lib.Session()
#Initialize the Variable
variables.global_variables_initializer().run(session=sess2)
#Initialize a copy of y in graph2
y1 = copy_elements.copy_op_to_graph(y, self.graph2, [a1])
#Now that y has been copied, x must be copied too.
#Get that instance
x1 = copy_elements.get_copied_op(x, self.graph2)
#Compare values of y & y1 for a sample input
#and check if they match
v1 = y.eval({x: 5}, session=sess1)
v2 = y1.eval({x1: 5}, session=sess2)
assert v1 == v2
if __name__ == "__main__":
test.main()
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