@Test
public void testFindCentre() {

    List<Coordinate> coordinates = Arrays.asList(new Coordinate(-3, 4), new Coordinate(4, 5), new Coordinate(1, -4));
    Coordinate expResult = new Coordinate(1, 1);
    Coordinate result = GMLReader.findCentre(coordinates);
    //
    //
    assertEquals(expResult, result);
}