diff --git a/unit_tests/util/coordinate.cpp b/unit_tests/util/coordinate.cpp
index 4fdf2640a..ec5cd5a5d 100644
--- a/unit_tests/util/coordinate.cpp
+++ b/unit_tests/util/coordinate.cpp
@@ -24,3 +24,69 @@ BOOST_AUTO_TEST_CASE(regression_test_1347)
 
     BOOST_CHECK_LE(std::abs(d1 - d2), 0.01);
 }
+
+BOOST_AUTO_TEST_CASE(lon_to_pixel)
+{
+    using namespace coordinate_calculation;
+    BOOST_CHECK_CLOSE(7.416042 * mercator::DEGREE_TO_PX, 825550.019142, 0.1);
+    BOOST_CHECK_CLOSE(7.415892 * mercator::DEGREE_TO_PX, 825533.321218, 0.1);
+    BOOST_CHECK_CLOSE(7.416016 * mercator::DEGREE_TO_PX, 825547.124835, 0.1);
+    BOOST_CHECK_CLOSE(7.41577 * mercator::DEGREE_TO_PX, 825519.74024, 0.1);
+    BOOST_CHECK_CLOSE(7.415808 * mercator::DEGREE_TO_PX, 825523.970381, 0.1);
+}
+
+BOOST_AUTO_TEST_CASE(lat_to_pixel)
+{
+    using namespace coordinate_calculation;
+    BOOST_CHECK_CLOSE(mercator::latToY(util::FloatLatitude(43.733947)) * mercator::DEGREE_TO_PX,
+                      5424361.75863, 0.1);
+    BOOST_CHECK_CLOSE(mercator::latToY(util::FloatLatitude(43.733799)) * mercator::DEGREE_TO_PX,
+                      5424338.95731, 0.1);
+    BOOST_CHECK_CLOSE(mercator::latToY(util::FloatLatitude(43.733922)) * mercator::DEGREE_TO_PX,
+                      5424357.90705, 0.1);
+    BOOST_CHECK_CLOSE(mercator::latToY(util::FloatLatitude(43.733697)) * mercator::DEGREE_TO_PX,
+                      5424323.24293, 0.1);
+    BOOST_CHECK_CLOSE(mercator::latToY(util::FloatLatitude(43.733729)) * mercator::DEGREE_TO_PX,
+                      5424328.17293, 0.1);
+}
+
+BOOST_AUTO_TEST_CASE(xyz_to_wgs84)
+{
+    using namespace coordinate_calculation;
+
+    double minx_1;
+    double miny_1;
+    double maxx_1;
+    double maxy_1;
+    mercator::xyzToWSG84(2, 2, 1, minx_1, miny_1, maxx_1, maxy_1);
+    BOOST_CHECK_CLOSE(minx_1, 180, 0.0001);
+    BOOST_CHECK_CLOSE(miny_1, -89.786, 0.0001);
+    BOOST_CHECK_CLOSE(maxx_1, 360, 0.0001);
+    BOOST_CHECK_CLOSE(maxy_1, -85.0511, 0.0001);
+
+    double minx_2;
+    double miny_2;
+    double maxx_2;
+    double maxy_2;
+    mercator::xyzToWSG84(100, 0, 13, minx_2, miny_2, maxx_2, maxy_2);
+    BOOST_CHECK_CLOSE(minx_2, -175.6054, 0.0001);
+    BOOST_CHECK_CLOSE(miny_2, 85.0473, 0.0001);
+    BOOST_CHECK_CLOSE(maxx_2, -175.5615, 0.0001);
+    BOOST_CHECK_CLOSE(maxy_2, 85.0511, 0.0001);
+}
+
+BOOST_AUTO_TEST_CASE(xyz_to_mercator)
+{
+    using namespace coordinate_calculation;
+
+    double minx;
+    double miny;
+    double maxx;
+    double maxy;
+    mercator::xyzToMercator(100, 0, 13, minx, miny, maxx, maxy);
+
+    BOOST_CHECK_CLOSE(minx, -19548311.361764118075, 0.0001);
+    BOOST_CHECK_CLOSE(miny, 20032616.372979003936, 0.0001);
+    BOOST_CHECK_CLOSE(maxx, -19543419.391953866929, 0.0001);
+    BOOST_CHECK_CLOSE(maxy, 20037508.342789277434, 0.0001);
+}