text: # 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 matcher_builder."""
  
  import tensorflow as tf
  
  from google.protobuf import text_format
  from object_detection.builders import matcher_builder
  from object_detection.matchers import argmax_matcher
  from object_detection.matchers import bipartite_matcher
  from object_detection.protos import matcher_pb2
  
  
  class MatcherBuilderTest(tf.test.TestCase):
  
    def test_build_arg_max_matcher_with_defaults(self):
      matcher_text_proto = """
        argmax_matcher {
        }
      """
      matcher_proto = matcher_pb2.Matcher()
      text_format.Merge(matcher_text_proto, matcher_proto)
      matcher_object = matcher_builder.build(matcher_proto)
      self.assertTrue(isinstance(matcher_object, argmax_matcher.ArgMaxMatcher))
      self.assertAlmostEqual(matcher_object._matched_threshold, 0.5)
      self.assertAlmostEqual(matcher_object._unmatched_threshold, 0.5)
      self.assertTrue(matcher_object._negatives_lower_than_unmatched)
      self.assertFalse(matcher_object._force_match_for_each_row)
  
    def test_build_arg_max_matcher_without_thresholds(self):
      matcher_text_proto = """
        argmax_matcher {
          ignore_thresholds: true
        }
      """
      matcher_proto = matcher_pb2.Matcher()
      text_format.Merge(matcher_text_proto, matcher_proto)
      matcher_object = matcher_builder.build(matcher_proto)
      self.assertTrue(isinstance(matcher_object, argmax_matcher.ArgMaxMatcher))
      self.assertEqual(matcher_object._matched_threshold, None)
      self.assertEqual(matcher_object._unmatched_threshold, None)
      self.assertTrue(matcher_object._negatives_lower_than_unmatched)
      self.assertFalse(matcher_object._force_match_for_each_row)
  
    def test_build_arg_max_matcher_with_non_default_parameters(self):
      matcher_text_proto = """
        argmax_matcher {
          matched_threshold: 0.7
          unmatched_threshold: 0.3
          negatives_lower_than_unmatched: false
          force_match_for_each_row: true
        }
      """
      matcher_proto = matcher_pb2.Matcher()
      text_format.Merge(matcher_text_proto, matcher_proto)
      matcher_object = matcher_builder.build(matcher_proto)
      self.assertTrue(isinstance(matcher_object, argmax_matcher.ArgMaxMatcher))
      self.assertAlmostEqual(matcher_object._matched_threshold, 0.7)
      self.assertAlmostEqual(matcher_object._unmatched_threshold, 0.3)
      self.assertFalse(matcher_object._negatives_lower_than_unmatched)
      self.assertTrue(matcher_object._force_match_for_each_row)
  
    def test_build_bipartite_matcher(self):
      matcher_text_proto = """
        bipartite_matcher {
        }
      """
      matcher_proto = matcher_pb2.Matcher()
      text_format.Merge(matcher_text_proto, matcher_proto)
      matcher_object = matcher_builder.build(matcher_proto)
      self.assertTrue(
          isinstance(matcher_object, bipartite_matcher.GreedyBipartiteMatcher))
  
    def test_raise_error_on_empty_matcher(self):
      matcher_text_proto = """
      """
      matcher_proto = matcher_pb2.Matcher()
      text_format.Merge(matcher_text_proto, matcher_proto)
      with self.assertRaises(ValueError):
        matcher_builder.build(matcher_proto)
  
  
  if __name__ == '__main__':
    tf.test.main()
  