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from_tensor_slices_test.py
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from_tensor_slices_test.py
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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 `tf.data.Dataset.from_tensor_slices()."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import numpy as np
from tensorflow.python.data.kernel_tests import test_base
from tensorflow.python.data.ops import dataset_ops
from tensorflow.python.framework import dtypes
from tensorflow.python.framework import errors
from tensorflow.python.framework import sparse_tensor
from tensorflow.python.framework import tensor_shape
from tensorflow.python.framework import test_util
from tensorflow.python.ops.ragged import ragged_factory_ops
from tensorflow.python.ops.ragged import ragged_tensor
from tensorflow.python.platform import test
@test_util.run_all_in_graph_and_eager_modes
class FromTensorSlicesTest(test_base.DatasetTestBase):
def testFromTensorSlices(self):
"""Test a dataset that represents the slices from a tuple of tensors."""
components = (
np.tile(np.array([[1], [2], [3], [4]]), 20), np.tile(
np.array([[12], [13], [14], [15]]), 22),
np.array([37.0, 38.0, 39.0, 40.0])
)
dataset = dataset_ops.Dataset.from_tensor_slices(components)
get_next = self.getNext(dataset)
self.assertEqual(
[c.shape[1:] for c in components],
[shape for shape in dataset_ops.get_legacy_output_shapes(dataset)])
for i in range(4):
results = self.evaluate(get_next())
for component, result_component in zip(components, results):
self.assertAllEqual(component[i], result_component)
with self.assertRaises(errors.OutOfRangeError):
results = self.evaluate(get_next())
def testFromTensorSlicesSparse(self):
"""Test a dataset that represents the slices from a tuple of tensors."""
components = (sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 0], [2, 0]]),
values=np.array([0, 0, 0]),
dense_shape=np.array([3, 1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 1], [2, 2]]),
values=np.array([1, 2, 3]),
dense_shape=np.array([3, 3])))
dataset = dataset_ops.Dataset.from_tensor_slices(components)
self.assertEqual(
[tensor_shape.TensorShape(c.dense_shape[1:]) for c in components],
[shape for shape in dataset_ops.get_legacy_output_shapes(dataset)])
expected = [
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([1]),
dense_shape=np.array([3]))),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[1]]),
values=np.array([2]),
dense_shape=np.array([3]))),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[2]]),
values=np.array([3]),
dense_shape=np.array([3]))),
]
self.assertDatasetProduces(dataset, expected_output=expected)
def testFromTensorSlicesMixed(self):
"""Test a dataset that represents the slices from a tuple of tensors."""
components = (np.tile(np.array([[1], [2], [3]]), 20),
np.tile(np.array([[12], [13], [14]]), 22),
np.array([37.0, 38.0, 39.0]),
sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 0], [2, 0]]),
values=np.array([0, 0, 0]),
dense_shape=np.array([3, 1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 1], [2, 2]]),
values=np.array([1, 2, 3]),
dense_shape=np.array([3, 3])))
dataset = dataset_ops.Dataset.from_tensor_slices(components)
get_next = self.getNext(dataset)
self.assertEqual([
tensor_shape.TensorShape(c.dense_shape[1:])
if sparse_tensor.is_sparse(c) else c.shape[1:] for c in components
], [shape for shape in dataset_ops.get_legacy_output_shapes(dataset)])
expected = [
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([1]),
dense_shape=np.array([3]))),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[1]]),
values=np.array([2]),
dense_shape=np.array([3]))),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[2]]),
values=np.array([3]),
dense_shape=np.array([3]))),
]
for i in range(3):
results = self.evaluate(get_next())
for component, result_component in zip(
(list(zip(*components[:3]))[i] + expected[i]), results):
if sparse_tensor.is_sparse(component):
self.assertSparseValuesEqual(component, result_component)
else:
self.assertAllEqual(component, result_component)
with self.assertRaises(errors.OutOfRangeError):
self.evaluate(get_next())
def testFromTensorSlicesWithDict(self):
components = {"foo": [1, 2, 3], "bar": [[4.0], [5.0], [6.0]]}
dataset = dataset_ops.Dataset.from_tensor_slices(components)
get_next = self.getNext(dataset)
self.assertEqual(dtypes.int32,
dataset_ops.get_legacy_output_types(dataset)["foo"])
self.assertEqual(dtypes.float32,
dataset_ops.get_legacy_output_types(dataset)["bar"])
self.assertEqual((), dataset_ops.get_legacy_output_shapes(dataset)["foo"])
self.assertEqual((1,), dataset_ops.get_legacy_output_shapes(dataset)["bar"])
for i in range(3):
results = self.evaluate(get_next())
self.assertEqual(components["foo"][i], results["foo"])
self.assertEqual(components["bar"][i], results["bar"])
with self.assertRaises(errors.OutOfRangeError):
self.evaluate(get_next())
def testFromTensorSlicesRagged(self):
components = (
ragged_factory_ops.constant_value([[[0]], [[1]], [[2]]]),
ragged_factory_ops.constant_value([[[3]], [[4]], [[5]]]),
)
dataset = dataset_ops.Dataset.from_tensor_slices(components)
expected = [(ragged_factory_ops.constant_value([[0]]),
ragged_factory_ops.constant_value([[3]])),
(ragged_factory_ops.constant_value([[1]]),
ragged_factory_ops.constant_value([[4]])),
(ragged_factory_ops.constant_value([[2]]),
ragged_factory_ops.constant_value([[5]]))]
self.assertDatasetProduces(dataset, expected_output=expected)
def testFromTensorSlicesMixedRagged(self):
components = (np.tile(np.array([[1], [2], [3]]),
20), np.tile(np.array([[12], [13], [14]]),
22), np.array([37.0, 38.0, 39.0]),
sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 0], [2, 0]]),
values=np.array([0, 0, 0]),
dense_shape=np.array([3, 1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0, 0], [1, 1], [2, 2]]),
values=np.array([1, 2, 3]),
dense_shape=np.array([3, 3])),
ragged_factory_ops.constant_value([[[0]], [[1]], [[2]]]))
dataset = dataset_ops.Dataset.from_tensor_slices(components)
get_next = self.getNext(dataset)
expected = [
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([1]),
dense_shape=np.array([3])), ragged_factory_ops.constant_value([[0]
])),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[1]]),
values=np.array([2]),
dense_shape=np.array([3])), ragged_factory_ops.constant_value([[1]
])),
(sparse_tensor.SparseTensorValue(
indices=np.array([[0]]),
values=np.array([0]),
dense_shape=np.array([1])),
sparse_tensor.SparseTensorValue(
indices=np.array([[2]]),
values=np.array([3]),
dense_shape=np.array([3])), ragged_factory_ops.constant_value([[2]
])),
]
for i in range(3):
results = self.evaluate(get_next())
for component, result_component in zip(
(list(zip(*components[:3]))[i] + expected[i]), results):
if sparse_tensor.is_sparse(component):
self.assertSparseValuesEqual(component, result_component)
elif ragged_tensor.is_ragged(component):
self.assertRaggedEqual(component, result_component)
else:
self.assertAllEqual(component, result_component)
with self.assertRaises(errors.OutOfRangeError):
self.evaluate(get_next())
def testFromTensorSlicesWithUintDtypes(self):
components = (
np.tile(np.array([[0], [1]], dtype=np.uint8), 2),
np.tile(np.array([[2], [256]], dtype=np.uint16), 2),
np.tile(np.array([[4], [65536]], dtype=np.uint32), 2),
np.tile(np.array([[8], [4294967296]], dtype=np.uint64), 2),
)
expected_types = (dtypes.uint8, dtypes.uint16, dtypes.uint32, dtypes.uint64)
expected_output = [tuple([c[i] for c in components]) for i in range(2)]
dataset = dataset_ops.Dataset.from_tensor_slices(components)
self.assertEqual(expected_types,
dataset_ops.get_legacy_output_types(dataset))
self.assertDatasetProduces(dataset, expected_output)
if __name__ == "__main__":
test.main()