test: StyleService 테스트 작성

- StyleService 테스트 작성
- StyleFakeRepository 작성
- StyleService 메서드 이름 수정

src/main/java/com/atwoz/member/application/info/style/StyleService.java

@@ -17,7 +17,7 @@ public class StyleService {
 
     @Transactional
     public void saveMemberStyles(final Long memberId, final List<String> styleNames) {
-        deleteBeforeMemberStyles(memberId);
+        deleteMemberStyles(memberId);
         List<Style> memberStyles = StyleName.findAllByNames(styleNames)
                 .stream()
                 .map(styleName -> new Style(memberId, styleName))
@@ -27,7 +27,7 @@ public void saveMemberStyles(final Long memberId, final List<String> styleNames)
     }
 
     @Transactional
-    public void deleteBeforeMemberStyles(final Long memberId) {
+    public void deleteMemberStyles(final Long memberId) {
         styleRepository.deleteStylesByMemberId(memberId);
     }
 

src/test/java/com/atwoz/member/application/info/StyleServiceTest.java

@@ -0,0 +1,72 @@
+package com.atwoz.member.application.info;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.atwoz.member.application.info.style.StyleService;
+import com.atwoz.member.domain.info.style.Style;
+import com.atwoz.member.domain.info.style.StyleRepository;
+import com.atwoz.member.infrastructure.info.StyleFakeRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayNameGeneration;
+import org.junit.jupiter.api.DisplayNameGenerator;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+import java.util.List;
+
+@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+@SuppressWarnings("NonAsciiCharacters")
+@ExtendWith(MockitoExtension.class)
+public class StyleServiceTest {
+
+    private StyleService styleService;
+    private StyleRepository styleRepository;
+
+    @BeforeEach
+    void init() {
+        styleRepository = new StyleFakeRepository();
+        styleService = new StyleService(styleRepository);
+    }
+
+    @Test
+    void 회원의_모든_스타일을_저장한다() {
+        // given
+        Long memberId = 1L;
+        List<String> styleNames = List.of("긍정적", "유머 감각");
+
+        // when
+        styleService.saveMemberStyles(memberId, styleNames);
+
+        // then
+        List<Style> saveStyles = styleRepository.findAllByMemberId(memberId);
+        assertThat(saveStyles.size()).isEqualTo(2);
+    }
+
+    @Test
+    void 회원의_모든_스타일을_삭제한다() {
+        // given
+        Long memberId = 1L;
+        List<String> styleNames = List.of("긍정적", "유머 감각");
+        styleService.saveMemberStyles(memberId, styleNames);
+
+        // when
+        styleService.deleteMemberStyles(memberId);
+
+        // then
+        assertThat(styleRepository.findAllByMemberId(memberId)).isEmpty();
+    }
+
+    @Test
+    void 회원의_모든_스타일을_조회한다() {
+        // given
+        Long memberId = 1L;
+        List<String> styleNames = List.of("긍정적", "유머 감각");
+        styleService.saveMemberStyles(memberId, styleNames);
+
+        // when
+        List<Style> memberStyles = styleService.findMemberStyles(memberId);
+
+        // then
+        assertThat(memberStyles.size()).isEqualTo(2);
+    }
+}

src/test/java/com/atwoz/member/infrastructure/info/StyleFakeRepository.java

@@ -0,0 +1,40 @@
+package com.atwoz.member.infrastructure.info;
+
+import com.atwoz.member.domain.info.style.Style;
+import com.atwoz.member.domain.info.style.StyleRepository;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class StyleFakeRepository implements StyleRepository {
+
+    private final Map<Long, Style> map = new HashMap<>();
+    private long id = 1L;
+
+    @Override
+    public void save(final Style style) {
+        Style newStyle = new Style(style.getMemberId(), style.getStyleName());
+        map.put(id, newStyle);
+        id++;
+    }
+
+    @Override
+    public void saveAll(final List<Style> styles) {
+        styles.stream()
+                .map(style -> new Style(style.getMemberId(), style.getStyleName()))
+                .forEach(style -> map.put(id++, style));
+    }
+
+    @Override
+    public void deleteStylesByMemberId(final Long memberId) {
+        map.values().removeIf(style -> memberId.equals(style.getMemberId()));
+    }
+
+    @Override
+    public List<Style> findAllByMemberId(final Long memberId) {
+        return map.values()
+                .stream()
+                .filter(style -> memberId.equals(style.getMemberId()))
+                .toList();
+    }
+}