@Test
  public void testBuildCoupe() {
    testCar = new Sport(new TurboEngine(1800));
    testCarBuilder = new CarBuilder(testCar);
    instance.build(testCarBuilder);

    Vehicle getVehicle = testCarBuilder.getVehicle();

    assertEquals(getVehicle, testCar);
  }
  @Test
  public void testBuildSaloon() {
    testCar = new Saloon(new StandardEngine(1300));
    testCarBuilder = new CarBuilder(testCar);
    instance.build(testCarBuilder);

    Vehicle getVehicle = testCarBuilder.getVehicle();

    assertEquals(getVehicle, testCar);
  }