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Python

# 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 utilities for traversing the dataset construction graph."""
from absl.testing import parameterized
from tensorflow.python.compat import compat
from tensorflow.python.data.experimental.ops import data_service_ops
from tensorflow.python.data.kernel_tests import test_base
from tensorflow.python.data.ops import dataset_ops
from tensorflow.python.data.util import traverse
from tensorflow.python.framework import combinations
from tensorflow.python.ops import gen_dataset_ops
from tensorflow.python.ops import math_ops
from tensorflow.python.platform import test
class _TestDataset(dataset_ops.UnaryUnchangedStructureDataset):
def __init__(self, input_dataset):
self._input_dataset = input_dataset
temp_variant_tensor = gen_dataset_ops.prefetch_dataset(
input_dataset._variant_tensor,
buffer_size=1,
**self._flat_structure)
variant_tensor = gen_dataset_ops.model_dataset(
temp_variant_tensor, **self._flat_structure)
super(_TestDataset, self).__init__(input_dataset, variant_tensor)
class TraverseTest(test_base.DatasetTestBase, parameterized.TestCase):
@combinations.generate(test_base.graph_only_combinations())
def testOnlySource(self):
ds = dataset_ops.Dataset.range(10)
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds)
self.assertAllEqual(["RangeDataset"], [x.name for x in variant_tensor_ops])
@combinations.generate(test_base.graph_only_combinations())
def testSimplePipeline(self):
ds = dataset_ops.Dataset.range(10).map(math_ops.square)
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds)
self.assertSetEqual(
set(["MapDataset", "RangeDataset"]),
set(x.name for x in variant_tensor_ops))
@combinations.generate(test_base.graph_only_combinations())
def testConcat(self):
ds1 = dataset_ops.Dataset.range(10)
ds2 = dataset_ops.Dataset.range(10)
ds = ds1.concatenate(ds2)
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds)
self.assertSetEqual(
set(["ConcatenateDataset", "RangeDataset", "RangeDataset_1"]),
set(x.name for x in variant_tensor_ops))
@combinations.generate(test_base.graph_only_combinations())
def testZip(self):
ds1 = dataset_ops.Dataset.range(10)
ds2 = dataset_ops.Dataset.range(10)
ds = dataset_ops.Dataset.zip((ds1, ds2))
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds)
self.assertSetEqual(
set(["ZipDataset", "RangeDataset", "RangeDataset_1"]),
set(x.name for x in variant_tensor_ops))
@combinations.generate(test_base.graph_only_combinations())
def testMultipleVariantTensors(self):
ds = dataset_ops.Dataset.range(10)
ds = _TestDataset(ds)
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds)
self.assertSetEqual(
set(["RangeDataset", "ModelDataset", "PrefetchDataset"]),
set(x.name for x in variant_tensor_ops))
@combinations.generate(test_base.graph_only_combinations())
def testFlatMap(self):
ds1 = dataset_ops.Dataset.range(10).repeat(10)
def map_fn(ds):
def _map(x):
return ds.batch(x)
return _map
ds2 = dataset_ops.Dataset.range(20).prefetch(1)
ds2 = ds2.flat_map(map_fn(ds1))
variant_tensor_ops = traverse.obtain_all_variant_tensor_ops(ds2)
self.assertSetEqual(
set([
"FlatMapDataset", "PrefetchDataset", "RepeatDataset",
"RangeDataset", "RangeDataset_1"
]), set(x.name for x in variant_tensor_ops))
@combinations.generate(test_base.graph_only_combinations())
def testTfDataService(self):
ds = dataset_ops.Dataset.range(10)
ds = ds.apply(
data_service_ops.distribute("parallel_epochs", "grpc://foo:0"))
ops = traverse.obtain_capture_by_value_ops(ds)
data_service_dataset_op = ("DataServiceDatasetV4"
if compat.forward_compatible(2022, 8, 31) else
"DataServiceDatasetV3")
self.assertContainsSubset(
["RangeDataset", data_service_dataset_op, "DummyIterationCounter"],
set(x.name for x in ops))
if __name__ == "__main__":
test.main()