// Copyright (c) 2018, ETH Zurich and UNC Chapel Hill.
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// Author: Johannes L. Schoenberger (jsch at inf.ethz.ch)

#define TEST_NAME "retrieval/inverted_file_entry"
#include "util/testing.h"

#include "retrieval/inverted_file_entry.h"

using namespace colmap::retrieval;

BOOST_AUTO_TEST_CASE(TestEmpty) {
  InvertedFileEntry<10> entry;
  BOOST_CHECK_EQUAL(entry.image_id, -1);
  BOOST_CHECK_EQUAL(entry.feature_idx, -1);
  BOOST_CHECK_EQUAL(entry.geometry.x, 0);
  BOOST_CHECK_EQUAL(entry.geometry.y, 0);
  BOOST_CHECK_EQUAL(entry.geometry.scale, 0);
  BOOST_CHECK_EQUAL(entry.geometry.orientation, 0);
  BOOST_CHECK_EQUAL(entry.descriptor.size(), 10);
}

BOOST_AUTO_TEST_CASE(TestReadWrite) {
  InvertedFileEntry<10> entry;
  entry.image_id = 99;
  entry.feature_idx = 100;
  entry.geometry.x = 0.123;
  entry.geometry.y = 0.456;
  entry.geometry.scale = 0.789;
  entry.geometry.orientation = -0.1;
  for (size_t i = 0; i < entry.descriptor.size(); ++i) {
    entry.descriptor[i] = (i % 2) == 0;
  }
  std::stringstream file;
  entry.Write(&file);

  InvertedFileEntry<10> read_entry;
  read_entry.Read(&file);
  BOOST_CHECK_EQUAL(entry.image_id, read_entry.image_id);
  BOOST_CHECK_EQUAL(entry.feature_idx, read_entry.feature_idx);
  BOOST_CHECK_EQUAL(entry.geometry.x, read_entry.geometry.x);
  BOOST_CHECK_EQUAL(entry.geometry.y, read_entry.geometry.y);
  BOOST_CHECK_EQUAL(entry.geometry.scale, read_entry.geometry.scale);
  BOOST_CHECK_EQUAL(entry.geometry.orientation,
                    read_entry.geometry.orientation);
  for (size_t i = 0; i < entry.descriptor.size(); ++i) {
    BOOST_CHECK_EQUAL(entry.descriptor[i], read_entry.descriptor[i]);
  }
}
