Mockito를 가지고 JPA repository 단위테스트 작성중인데.. 풀리지 않는 의문점이 있어 질문드려봅니다. Specification 객체에 대해 mock을 주입하는 방식으로 테스트를 작성하고 있는데 의도한대로 동작하질 않네요.. repository.count 메소드 인자로 Specification 객체를 전달하는 루틴인데 의도대로면 true를 리턴해줘야하는데 의도대로 안되네요

Specifications.where(MemberSpecification.nickEqual("뽀로로")))

전체 소스코드

package net.ncrash.api.member.query.application;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.*;

import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.data.jpa.domain.Specifications;

import net.ncrash.api.member.query.specification.MemberSpecification;
import net.ncrash.member.repository.DormantMemberRepository;
import net.ncrash.member.repository.MemberJpaRepository;


/**
 * Class
 *
 * @author David
 * @version 1.0
 * @created 2017. 03. 17. 18:54
 * @history
 */
public class MemberQueryServiceTest {
  @InjectMocks
  private MemberQueryService memberQueryService;

  @Mock
  private MemberJpaRepository memberRepository;

  @Mock
  private DormantMemberRepository dormantMemberRepository;

  @Before
  public void setUp() throws Exception {
    MockitoAnnotations.initMocks(this);
  }

  @Test
  public void duplicateNickname() throws Exception {
    // given

    // when
    when(memberRepository.count(Specifications.where(MemberSpecification.nickEqual("뽀로로")))).thenReturn(1L);

    // then
    assertThat(memberQueryService.duplicateNickname("뽀로로")).isTrue();
  }
}

package net.ncrash.api.member.query.application;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.jpa.domain.Specifications;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import net.ncrash.api.member.query.specification.DormantMemberSpecification;
import net.ncrash.api.member.query.specification.MemberSpecification;
import net.ncrash.member.repository.DormantMemberRepository;
import net.ncrash.member.repository.MemberJpaRepository;

/**
 * Class
 *
 * @author David
 * @version 1.0
 * @created 2017. 03. 17. 18:46
 * @history
 */
@Service
@Transactional(readOnly = true)
public class MemberQueryService {
  private MemberJpaRepository memberRepository;
  private DormantMemberRepository dormantMemberRepository;

  @Autowired
  public MemberQueryService(MemberJpaRepository memberRepository,
      DormantMemberRepository dormantMemberRepository) {
    this.memberRepository = memberRepository;
    this.dormantMemberRepository = dormantMemberRepository;
  }

  /**
   * 회원 중복 닉네임 조회
   *
   * @param nick 회원 닉네임
   * @return
   */
  public boolean duplicateNickname(final String nick) {
    if (StringUtils.isEmpty(nick)) {
      return false;
    } else {
      final long memberCount =
              memberRepository.count(Specifications.where(MemberSpecification.nickEqual(nick)));
      final long dormantMemberCount = dormantMemberRepository
              .count(Specifications.where(DormantMemberSpecification.nickEqual(nick)));

      return memberCount > 0L || dormantMemberCount > 0L;
    }
  }
}

package net.ncrash.api.member.query.specification;

import org.springframework.data.jpa.domain.Specification;

import net.ncrash.member.domain.MemberEntity;
import net.ncrash.member.domain.MemberEntity_;
import net.ncrash.member.domain.MemberIdentityValue_;

/**
 * {@link MemberEntity} JPA Specification Class For API
 *
 * @author David
 * @version 1.0
 * @created 2017. 03. 06. 16:18
 * @history
 */
public class MemberSpecification {

  public static Specification<MemberEntity> nickEqual(final String nick) {
    return (root, query, cb) -> cb
        .equal(root.get(MemberEntity_.identity).get(MemberIdentityValue_.nick), nick);
  }
}