@Test
public void testGoAlong() {
double amount;
MapPoint point;
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 0.5);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(2.5, 1)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 2);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(4, 1)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 2.5);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(4, 1.5)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 6);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(3, 4)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 8.5);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(1, 3.5)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 9);
assertTrue(amount == 0);
assertTrue(point.equals(new MapPoint(1, 3)));
point = new MapPoint(2, 1);
amount = mapPath.goAlong(point, 10);
assertTrue(amount == 1);
assertTrue(point.equals(new MapPoint(2, 1)));
point = new MapPoint(1, 3);
amount = mapPath.goAlong(point, 1);
assertTrue(amount == 1);
assertTrue(point.equals(new MapPoint(1, 3)));
}