public function testGetDistance()
{
$coordinate1 = new Coordinate(19.820664, -155.468066, $this->ellipsoid);
$coordinate2 = new Coordinate(20.709722, -156.253333, $this->ellipsoid);
$calculator = new Vincenty();
$distance = $calculator->getDistance($coordinate1, $coordinate2);
$this->assertEquals(128130.85, $distance);
}