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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 common shapes."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from tensorflow.python.framework import common_shapes
from tensorflow.python.framework import tensor_shape
from tensorflow.python.framework import test_util
from tensorflow.python.platform import googletest
class CommonShapesTest(test_util.TensorFlowTestCase):
def testBroadcast_one_dimension(self):
s1 = tensor_shape.vector(5)
s2 = tensor_shape.vector(7)
unknown = tensor_shape.unknown_shape()
scalar = tensor_shape.scalar()
expanded_scalar = tensor_shape.TensorShape([1])
# Tensors with same shape should have the same broadcast result.
self.assertEqual(s1, common_shapes.broadcast_shape(s1, s1))
self.assertEqual(s2, common_shapes.broadcast_shape(s2, s2))
self.assertEqual(unknown, common_shapes.broadcast_shape(unknown, unknown))
self.assertEqual(scalar, common_shapes.broadcast_shape(scalar, scalar))
self.assertEqual(expanded_scalar, common_shapes.broadcast_shape(
expanded_scalar, expanded_scalar))
# [] acts like an identity.
self.assertEqual(s1, common_shapes.broadcast_shape(s1, scalar))
self.assertEqual(s2, common_shapes.broadcast_shape(s2, scalar))
self.assertEqual(s1, common_shapes.broadcast_shape(s1, expanded_scalar))
self.assertEqual(s2, common_shapes.broadcast_shape(s2, expanded_scalar))
self.assertEqual(unknown, common_shapes.broadcast_shape(s1, unknown))
self.assertEqual(unknown, common_shapes.broadcast_shape(s2, unknown))
self.assertEqual(expanded_scalar, common_shapes.broadcast_shape(
scalar, expanded_scalar))
with self.assertRaises(ValueError):
common_shapes.broadcast_shape(s1, s2)
common_shapes.broadcast_shape(s2, s1)
if __name__ == "__main__":
googletest.main()
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