// Copyright (c) 2022, ETH Zurich and UNC Chapel Hill.
// All rights reserved.
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de)

#define TEST_NAME "base/database_cache"
#include "util/testing.h"

#include "base/database_cache.h"

using namespace colmap;

BOOST_AUTO_TEST_CASE(TestEmpty) {
  DatabaseCache cache;
  BOOST_CHECK_EQUAL(cache.NumCameras(), 0);
  BOOST_CHECK_EQUAL(cache.NumImages(), 0);
}

BOOST_AUTO_TEST_CASE(TestAddCamera) {
  DatabaseCache cache;
  Camera camera;
  camera.SetCameraId(1);
  camera.InitializeWithId(SimplePinholeCameraModel::model_id, 1, 1, 1);
  cache.AddCamera(camera);
  BOOST_CHECK_EQUAL(cache.NumCameras(), 1);
  BOOST_CHECK_EQUAL(cache.NumImages(), 0);
  BOOST_CHECK(cache.ExistsCamera(camera.CameraId()));
  BOOST_CHECK_EQUAL(cache.Camera(camera.CameraId()).ModelId(),
                    camera.ModelId());
}

BOOST_AUTO_TEST_CASE(TestDegenerateCamera) {
  DatabaseCache cache;
  Camera camera;
  camera.InitializeWithId(SimplePinholeCameraModel::model_id, 1, 1, 1);
  cache.AddCamera(camera);
  BOOST_CHECK_EQUAL(cache.NumCameras(), 1);
  BOOST_CHECK_EQUAL(cache.NumImages(), 0);
  BOOST_CHECK(cache.ExistsCamera(camera.CameraId()));
  BOOST_CHECK_EQUAL(cache.Camera(camera.CameraId()).MeanFocalLength(), 1);
}

BOOST_AUTO_TEST_CASE(TestAddImage) {
  DatabaseCache cache;
  Image image;
  image.SetImageId(1);
  image.SetPoints2D(std::vector<Eigen::Vector2d>(10));
  cache.AddImage(image);
  BOOST_CHECK_EQUAL(cache.NumCameras(), 0);
  BOOST_CHECK_EQUAL(cache.NumImages(), 1);
  BOOST_CHECK(cache.ExistsImage(image.ImageId()));
  BOOST_CHECK_EQUAL(cache.Image(image.ImageId()).NumPoints2D(),
                    image.NumPoints2D());
  BOOST_CHECK(cache.CorrespondenceGraph().ExistsImage(image.ImageId()));
  BOOST_CHECK_EQUAL(
      cache.CorrespondenceGraph().NumCorrespondencesForImage(image.ImageId()),
      0);
  BOOST_CHECK_EQUAL(
      cache.CorrespondenceGraph().NumObservationsForImage(image.ImageId()), 0);
}