wehub-resource-sync
55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
# Copyright 2021 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 trackable_utils."""
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from tensorflow.python.eager import test
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from tensorflow.python.trackable import trackable_utils
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class TrackableUtilsTest(test.TestCase):
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def test_order_by_dependency(self):
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"""Tests order_by_dependency correctness."""
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# Visual graph (vertical lines point down, so 1 depends on 2):
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# 1
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# / \
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# 2 --> 3 <-- 4
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# |
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# 5
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# One possible order: [5, 3, 4, 2, 1]
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dependencies = {1: [2, 3], 2: [3], 3: [5], 4: [3], 5: []}
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sorted_arr = list(trackable_utils.order_by_dependency(dependencies))
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indices = {x: sorted_arr.index(x) for x in range(1, 6)}
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self.assertEqual(indices[5], 0)
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self.assertEqual(indices[3], 1)
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self.assertGreater(indices[1], indices[2]) # 2 must appear before 1
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def test_order_by_no_dependency(self):
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sorted_arr = list(trackable_utils.order_by_dependency(
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{x: [] for x in range(15)}))
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self.assertEqual(set(sorted_arr), set(range(15)))
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def test_order_by_dependency_invalid_map(self):
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with self.assertRaisesRegex(
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ValueError, "Found values in the dependency map which are not keys"):
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trackable_utils.order_by_dependency({1: [2]})
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if __name__ == "__main__":
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test.main()
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