@Test
public void testLongitude() {

    double endLatRad = 0.86833;
    double startLat = 48.85341;
    double startLon = -2.3488;
    double distance = 100000.0;
    double bearingRad = 0.0;
    GreatCirclePointDistance instance = new GreatCirclePointDistance(startLat, startLon, distance);
    double expResult = -0.040994;
    double result = instance.longitude(endLatRad, bearingRad);
    assertEquals(expResult, result, 0.00001);
}