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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.
# ==============================================================================
"""Tests for special_functions module."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.contrib.autograph.lang import special_functions
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import dtypes
from tensorflow.python.framework import tensor_util
from tensorflow.python.ops import list_ops
from tensorflow.python.platform import test
class SpecialFunctionsTest(test.TestCase):
def test_tensor_list_from_elements(self):
elements = [constant_op.constant([1, 2]), constant_op.constant([3, 4])]
l = special_functions.tensor_list(elements)
sl = list_ops.tensor_list_stack(l, element_dtype=dtypes.int32)
with self.test_session() as sess:
self.assertAllEqual(sess.run(sl), [[1, 2], [3, 4]])
def test_tensor_list_array_from_elements(self):
elements = [constant_op.constant([1, 2]), constant_op.constant([3, 4])]
l = special_functions.tensor_list(elements, use_tensor_array=True)
sl = l.stack()
with self.test_session() as sess:
self.assertAllEqual(sess.run(sl), [[1, 2], [3, 4]])
def test_stack(self):
self.assertEqual(special_functions.stack(1, strict=False), 1)
self.assertListEqual(
special_functions.stack([1, 2, 3], strict=False), [1, 2, 3])
# TODO(mdan): This should probably forward to tf.stack.
self.assertTrue(
isinstance(
special_functions.stack(
[constant_op.constant(1),
constant_op.constant(2)], strict=False), list))
with self.assertRaises(ValueError):
special_functions.stack([1, 2, 3])
t = constant_op.constant([1.0, 2.0])
l = list_ops.tensor_list_from_tensor(
t, element_shape=constant_op.constant([], dtype=dtypes.int32))
self.assertTrue(
tensor_util.is_tensor(
special_functions.stack(l, element_dtype=dtypes.float32)))
if __name__ == '__main__':
test.main()
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