47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
# Copyright 2017 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Tests for `tf.data.Dataset.take()`."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from absl.testing import parameterized
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import numpy as np
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from tensorflow.python.data.kernel_tests import test_base
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from tensorflow.python.data.ops import dataset_ops
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from tensorflow.python.framework import combinations
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from tensorflow.python.platform import test
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class TakeTest(test_base.DatasetTestBase, parameterized.TestCase):
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@combinations.generate(
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combinations.times(test_base.default_test_combinations(),
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combinations.combine(count=[-1, 0, 4, 10, 25])))
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def testBasic(self, count):
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components = (np.arange(10),)
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dataset = dataset_ops.Dataset.from_tensor_slices(components).take(count)
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self.assertEqual(
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[c.shape[1:] for c in components],
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[shape for shape in dataset_ops.get_legacy_output_shapes(dataset)])
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num_output = min(count, 10) if count != -1 else 10
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self.assertDatasetProduces(
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dataset, [tuple(components[0][i:i + 1]) for i in range(num_output)])
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if __name__ == "__main__":
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test.main()
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