@Test(expected = IllegalStateException.class)
public void activateActiveVehicle() throws Exception {
// Given
vehicle.applyEvent(new Activated(vehicle.id));
// When
vehicle.activate();
// Should throw IllegalStateException
}
@Test
public void moveActiveVehicleTest() throws Exception {
// Given
vehicle.applyEvent(new Activated(vehicle.id));
// When
vehicle.changeLocation(1f, 1f);
// Then
List<Event> events = vehicle.getPendingEvents();
assertTrue(events.size() == 2);
assertTrue(events.get(1).equals(new LocationChanged(1f, 1f)));
}