인프런 커뮤니티 질문&답변

강의를 듣고 이렇게 테스트코드를 작성해봤는데.. 

이렇게 사용하는 게 아닌 것 같아서요..!

DiscountService에서 Map으로 받지말고 필드명을 빈 이름으로 한다거나 @Primary 설정을 하는 게 맞는지..?

아니면 다른 방법이 있는지 궁금합니다..

public class DiscountPolicyConfigTest {

    @DisplayName("별도 설정 정보를 만들고 수동으로 등록한다")
    @Test
    void configTest() {
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(DiscountPolicyConfig.class, DiscountService.class);
        DiscountService discountService = applicationContext.getBean(DiscountService.class);

        Member member = new Member(1L, "userA", Grade.VIP);
        int discountPrice = discountService.discount(member, 20000, "rateDiscountPolicy");

        assertThat(discountPrice).isEqualTo(2000);
    }

    static class DiscountService {

        private final Map<String, DiscountPolicy> discountPolicyMap;

        @Autowired
        public DiscountService(Map<String, DiscountPolicy> policyMap) {
            this.discountPolicyMap = policyMap;
        }

        public int discount(Member member, int price, String policy) {
            DiscountPolicy discountPolicy = discountPolicyMap.get(policy);
            return discountPolicy.discount(member, price);
        }
    }

    @Configuration
    static class DiscountPolicyConfig {

        @Bean
        public DiscountPolicy rateDiscountPolicy() {
            return new RateDiscountPolicy();
        }

        @Bean
        public DiscountPolicy fixDiscountPolicy() {
            return new FixDiscountPolicy();
        }

    }

}