/** testing for method getCurrentIndex */
@Test
public void testGetCurrentIndex() {
Simulator s = new Simulator(numCustomsDesks, numPassengers);
assertEquals(-1, s.getCurrentIndex());
s.step();
int a = s.getCurrentIndex();
assertTrue(a < 3 && a >= 0);
s.step();
a = s.getCurrentIndex();
assertTrue(a >= 0);
}
