인프런 커뮤니티 질문&답변

제목 그대로 테스트 케이스 진행시

List와 Map이 모두 null로 조회되어 테스트 오류가 발생합니다

package hello.core.autowired.allbean;

import hello.core.discount.DiscountPolicy;
import hello.core.member.Grade;
import hello.core.member.Member;
import hello.core.order.AutoAppConfig;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import java.util.List;
import java.util.Map;

import static org.assertj.core.api.Assertions.*;

public class AllBeanTest {


    @Test
    void findAllBean(){
        ApplicationContext ac =
                new AnnotationConfigApplicationContext(AutoAppConfig.class, DiscountService.class);

        DiscountService discountService = ac.getBean(DiscountService.class);
        Member member = new Member(1L, "userA", Grade.VIP);

        int discountPrice = discountService.discount(member, 10000, "fixDiscountPolicy");

        assertThat(discountService).isInstanceOf(DiscountService.class);
        assertThat(discountPrice).isEqualTo(1000);

        int rateDiscountPrice = discountService.discount(member, 20000, "rateDiscountPolicy");
        assertThat(discountPrice).isEqualTo(2000);

    }

    static class DiscountService {
        private final Map<String, DiscountPolicy> policyMap;
        private final List<DiscountPolicy> policyList;


        public DiscountService(Map<String, DiscountPolicy> policyMap, List<DiscountPolicy> policyList) {
            this.policyMap = policyMap;
            this.policyList = policyList;

            System.out.println("policyMap = " + policyMap);
            System.out.println("policyList = " + policyList);
        }

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

}

java.lang.NullPointerException: Cannot invoke "hello.core.discount.DiscountPolicy.discount(hello.core.member.Member, int)" because "discountPolicy" is null

이라는 오류가 발생하는데 어느 부분이 문제인가요