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1# encoding: utf-8
2# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#     http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15# ==============================================================================
16"""Categorical vocabulary tests."""
17
18from __future__ import absolute_import
19from __future__ import division
20from __future__ import print_function
21
22from tensorflow.contrib.learn.python.learn.preprocessing import categorical_vocabulary
23from tensorflow.python.platform import test
24
25
26class CategoricalVocabularyTest(test.TestCase):
27  """Categorical vocabulary tests."""
28
29  def testIntVocabulary(self):
30    vocab = categorical_vocabulary.CategoricalVocabulary()
31    self.assertEqual(vocab.get(1), 1)
32    self.assertEqual(vocab.get(3), 2)
33    self.assertEqual(vocab.get(2), 3)
34    self.assertEqual(vocab.get(3), 2)
35    # This vocab doesn't handle nan specially.
36    self.assertEqual(vocab.get(float('nan')), 4)
37    self.assertEqual(len(vocab), 5)
38
39  def testWordVocabulary(self):
40    vocab = categorical_vocabulary.CategoricalVocabulary()
41    self.assertEqual(vocab.get('a'), 1)
42    self.assertEqual(vocab.get('b'), 2)
43    self.assertEqual(vocab.get('a'), 1)
44    self.assertEqual(vocab.get('b'), 2)
45
46  def testCountsTrim(self):
47    vocab = categorical_vocabulary.CategoricalVocabulary()
48    vocab.get('c')
49    vocab.add('c', 5)
50    vocab.get('a')
51    vocab.add('a', 10)
52    # not in vocab yet, skips.
53    vocab.add('b', 5)
54    vocab.add('d', 12)
55    vocab.trim(7, 11)
56    vocab.freeze()
57    self.assertEqual(vocab.get('b'), 0)
58    self.assertEqual(vocab.get('c'), 0)
59    self.assertEqual(len(vocab), 2)
60    self.assertEqual(vocab.get('a'), 1)
61
62
63if __name__ == '__main__':
64  test.main()
65