@Test
public void testHaversineFormula_Paris_London() {

    double lat1 = 48.85341;
    double lon1 = 2.34880;
    double lat2 = 51.50853;
    double lon2 = -0.12574;
    double expResult = 343771;
    double result = GreatCircleDistance.haversineFormula(lat1, lon1, lat2, lon2);
    assertEquals(expResult, result, 1);
}