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# Copyright 2015 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 the DynamicPartition op."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import numpy as np
from six.moves import xrange # pylint: disable=redefined-builtin
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import dtypes
from tensorflow.python.ops import array_ops
from tensorflow.python.ops import data_flow_ops
from tensorflow.python.ops import gradients_impl
import tensorflow.python.ops.data_flow_grad # pylint: disable=unused-import
from tensorflow.python.platform import test
class DynamicPartitionTest(test.TestCase):
def testSimpleOneDimensional(self):
with self.test_session() as sess:
data = constant_op.constant([0, 13, 2, 39, 4, 17])
indices = constant_op.constant([0, 0, 2, 3, 2, 1])
partitions = data_flow_ops.dynamic_partition(
data, indices, num_partitions=4)
partition_vals = sess.run(partitions)
self.assertAllEqual([0, 13], partition_vals[0])
self.assertAllEqual([17], partition_vals[1])
self.assertAllEqual([2, 4], partition_vals[2])
self.assertAllEqual([39], partition_vals[3])
# Vector data input to DynamicPartition results in
# `num_partitions` vectors of unknown length.
self.assertEqual([None], partitions[0].get_shape().as_list())
self.assertEqual([None], partitions[1].get_shape().as_list())
self.assertEqual([None], partitions[2].get_shape().as_list())
self.assertEqual([None], partitions[3].get_shape().as_list())
def testSimpleTwoDimensional(self):
with self.test_session() as sess:
data = constant_op.constant([[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11],
[12, 13, 14], [15, 16, 17]])
indices = constant_op.constant([0, 0, 2, 3, 2, 1])
partitions = data_flow_ops.dynamic_partition(
data, indices, num_partitions=4)
partition_vals = sess.run(partitions)
self.assertAllEqual([[0, 1, 2], [3, 4, 5]], partition_vals[0])
self.assertAllEqual([[15, 16, 17]], partition_vals[1])
self.assertAllEqual([[6, 7, 8], [12, 13, 14]], partition_vals[2])
self.assertAllEqual([[9, 10, 11]], partition_vals[3])
# Vector data input to DynamicPartition results in
# `num_partitions` matrices with an unknown number of rows, and 3 columns.
self.assertEqual([None, 3], partitions[0].get_shape().as_list())
self.assertEqual([None, 3], partitions[1].get_shape().as_list())
self.assertEqual([None, 3], partitions[2].get_shape().as_list())
self.assertEqual([None, 3], partitions[3].get_shape().as_list())
def testHigherRank(self):
np.random.seed(7)
with self.test_session() as sess:
for n in 2, 3:
for shape in (4,), (4, 5), (4, 5, 2):
partitions = np.random.randint(n, size=np.prod(shape)).reshape(shape)
for extra_shape in (), (6,), (6, 7):
data = np.random.randn(*(shape + extra_shape))
partitions_t = constant_op.constant(partitions, dtype=dtypes.int32)
data_t = constant_op.constant(data)
outputs = data_flow_ops.dynamic_partition(
data_t, partitions_t, num_partitions=n)
self.assertEqual(n, len(outputs))
outputs_val = sess.run(outputs)
for i, output in enumerate(outputs_val):
self.assertAllEqual(output, data[partitions == i])
# Test gradients
outputs_grad = [7 * output for output in outputs_val]
grads = gradients_impl.gradients(outputs, [data_t, partitions_t],
outputs_grad)
self.assertEqual(grads[1], None) # Partitions has no gradients
self.assertAllEqual(7 * data, sess.run(grads[0]))
def testErrorIndexOutOfRange(self):
with self.test_session() as sess:
data = constant_op.constant([[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10, 11],
[12, 13, 14]])
indices = constant_op.constant([0, 2, 99, 2, 2])
partitions = data_flow_ops.dynamic_partition(
data, indices, num_partitions=4)
with self.assertRaisesOpError(r"partitions\[2\] = 99 is not in \[0, 4\)"):
sess.run(partitions)
def testScalarIndexOutOfRange(self):
with self.test_session() as sess:
bad = 17
data = np.zeros(5)
partitions = data_flow_ops.dynamic_partition(data, bad, num_partitions=7)
with self.assertRaisesOpError(r"partitions = 17 is not in \[0, 7\)"):
sess.run(partitions)
def testHigherRankIndexOutOfRange(self):
with self.test_session() as sess:
shape = (2, 3)
indices = array_ops.placeholder(shape=shape, dtype=np.int32)
data = np.zeros(shape + (5,))
partitions = data_flow_ops.dynamic_partition(
data, indices, num_partitions=7)
for i in xrange(2):
for j in xrange(3):
bad = np.zeros(shape, dtype=np.int32)
bad[i, j] = 17
with self.assertRaisesOpError(
r"partitions\[%d,%d\] = 17 is not in \[0, 7\)" % (i, j)):
sess.run(partitions, feed_dict={indices: bad})
def testErrorWrongDimsIndices(self):
data = constant_op.constant([[0], [1], [2]])
indices = constant_op.constant([[0], [0]])
with self.assertRaises(ValueError):
data_flow_ops.dynamic_partition(data, indices, num_partitions=4)
if __name__ == "__main__":
test.main()
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