test: MemberService 단위 테스트 구현

Author: ysw789

src/test/java/dmu/dasom/api/domain/member/MemberServiceTest.java

@@ -0,0 +1,129 @@
+package dmu.dasom.api.domain.member;
+
+import dmu.dasom.api.domain.common.exception.CustomException;
+import dmu.dasom.api.domain.common.exception.ErrorCode;
+import dmu.dasom.api.domain.member.dto.SignupRequestDto;
+import dmu.dasom.api.domain.member.entity.Member;
+import dmu.dasom.api.domain.member.repository.MemberRepository;
+import dmu.dasom.api.domain.member.service.MemberServiceImpl;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+class MemberServiceTest {
+
+    @Mock
+    private BCryptPasswordEncoder encoder;
+
+    @Mock
+    MemberRepository memberRepository;
+
+    @InjectMocks
+    private MemberServiceImpl memberService;
+
+    @Test
+    @DisplayName("이메일로 사용자 조회 - 성공")
+    void getMemberByEmail_success() {
+        // given
+        Optional<Member> member = Optional.ofNullable(mock(Member.class));
+        String email = "[email protected]";
+        when(memberRepository.findByEmail(email)).thenReturn(member);
+
+        // when
+        Member memberByEmail = memberService.getMemberByEmail(email);
+
+        // then
+        assertNotNull(memberByEmail);
+        verify(memberRepository, times(1)).findByEmail(email);
+    }
+
+    @Test
+    @DisplayName("이메일로 사용자 조회 - 실패")
+    void getMemberByEmail_fail() {
+        // given
+        String email = "[email protected]";
+        when(memberRepository.findByEmail(email)).thenReturn(Optional.empty());
+
+        // when
+        CustomException exception = assertThrows(CustomException.class, () -> {
+            memberService.getMemberByEmail(email);
+        });
+
+        // then
+        assertEquals(ErrorCode.MEMBER_NOT_FOUND, exception.getErrorCode());
+        verify(memberRepository, times(1)).findByEmail(email);
+    }
+
+    @Test
+    @DisplayName("이메일 확인 - 존재")
+    void checkByEmail_true() {
+        // given
+        String email = "[email protected]";
+        when(memberRepository.existsByEmail(email)).thenReturn(true);
+
+        // when
+        boolean result = memberService.checkByEmail(email);
+
+        // then
+        assertTrue(result);
+    }
+
+    @Test
+    @DisplayName("이메일 확인 - 미존재")
+    void checkByEmail_false() {
+        // given
+        String email = "[email protected]";
+        when(memberRepository.existsByEmail(email)).thenReturn(false);
+
+        // when
+        boolean result = memberService.checkByEmail(email);
+
+        // then
+        assertFalse(result);
+    }
+
+    @Test
+    @DisplayName("회원가입 - 성공")
+    void signUp_success() {
+        // given
+        SignupRequestDto request = mock(SignupRequestDto.class);
+        when(request.getEmail()).thenReturn("[email protected]");
+        when(request.getPassword()).thenReturn("password");
+        when(encoder.encode("password")).thenReturn("encodedPassword");
+        when(memberRepository.existsByEmail("[email protected]")).thenReturn(false);
+
+        // when
+        memberService.signUp(request);
+
+        // then
+        verify(memberRepository, times(1)).save(any());
+    }
+
+    @Test
+    @DisplayName("회원가입 - 실패")
+    void signUp_fail() {
+        // given
+        SignupRequestDto request = mock(SignupRequestDto.class);
+        when(request.getEmail()).thenReturn("[email protected]");
+        when(memberRepository.existsByEmail("[email protected]")).thenReturn(true);
+
+        // when
+        CustomException exception = assertThrows(CustomException.class, () -> {
+            memberService.signUp(request);
+        });
+
+        // then
+        assertEquals(ErrorCode.SIGNUP_FAILED, exception.getErrorCode());
+        verify(memberRepository, never()).save(any());
+    }
+}