feat : NewsLetter 도메인 클래스를 생성한다

domain/src/main/java/kusitms/duduk/domain/global/Category.java

@@ -18,8 +18,8 @@ public enum Category {
 
     public static Category from(String description) {
         return Arrays.stream(Category.values())
-            .filter(c -> c.name().equalsIgnoreCase(description))
+            .filter(d -> d.description.equals(description))
             .findFirst()
-            .orElseThrow(() -> new IllegalArgumentException("지원하지 않는 OAuth 제공자입니다."));
+            .orElseThrow(() -> new IllegalArgumentException("올바르지 않은 카테고리입니다."));
     }
 }

domain/src/main/java/kusitms/duduk/domain/global/Count.java

@@ -0,0 +1,30 @@
+package kusitms.duduk.domain.global;
+
+import lombok.Getter;
+
+@Getter
+public class Count {
+
+    private static final int ZERO = 0;
+    private int Count;
+
+    private Count(int Count) {
+        this.Count = Count;
+    }
+
+    public static Count initial() {
+        return new Count(ZERO);
+    }
+
+    public static Count from(int Count) {
+        return new Count(Count);
+    }
+
+    public void increase() {
+        this.Count++;
+    }
+
+    public void decrease() {
+        this.Count--;
+    }
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/NewsLetter.java

@@ -0,0 +1,32 @@
+package kusitms.duduk.domain.newsletter;
+
+import java.util.List;
+import kusitms.duduk.domain.global.Category;
+import kusitms.duduk.domain.global.Count;
+import kusitms.duduk.domain.global.Id;
+import kusitms.duduk.domain.newsletter.vo.Content;
+import kusitms.duduk.domain.newsletter.vo.Keywords;
+import kusitms.duduk.domain.newsletter.vo.Summary;
+import kusitms.duduk.domain.newsletter.vo.Thumbnail;
+import kusitms.duduk.domain.newsletter.vo.Title;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder(toBuilder = true)
+public class NewsLetter {
+
+    private Id newsLetterId;
+    private Id editorId;
+    private Thumbnail thumbnail;
+    private Title title;
+    private Content content;
+    private Keywords keywords;
+    private Category category;
+    private Summary summary;
+    private Count viewCount;
+    private Count scrapCount;
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/vo/Content.java

@@ -0,0 +1,21 @@
+package kusitms.duduk.domain.newsletter.vo;
+
+import lombok.Getter;
+
+@Getter
+public class Content {
+
+    private String content;
+
+    private Content(String content) {
+        this.content = content;
+    }
+
+    public static Content from(String content) {
+        return new Content(content);
+    }
+
+    public void revise(String content) {
+        this.content = content;
+    }
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/vo/Keywords.java

@@ -0,0 +1,31 @@
+package kusitms.duduk.domain.newsletter.vo;
+
+import java.util.ArrayList;
+import java.util.List;
+import lombok.Getter;
+
+@Getter
+public class Keywords {
+
+    List<String> words;
+
+    private Keywords(List<String> words) {
+        this.words = words;
+    }
+
+    public static Keywords from(String sentence) {
+        List<String> list = new ArrayList<>();
+        for (String keyword : sentence.split(",")) {
+            list.add(keyword);
+        }
+        return new Keywords(list);
+    }
+
+    public void add(String keyword) {
+        words.add(keyword);
+    }
+
+    public void remove(String keyword) {
+        words.remove(keyword);
+    }
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/vo/Summary.java

@@ -0,0 +1,28 @@
+package kusitms.duduk.domain.newsletter.vo;
+
+import java.util.ArrayList;
+import java.util.List;
+import lombok.Getter;
+
+@Getter
+public class Summary {
+
+    private List<String> sentences;
+
+    private Summary(List<String> sentences) {
+        this.sentences = sentences;
+    }
+
+    public static Summary from(String summary) {
+        List<String> list = new ArrayList<>();
+        for (String sentence : summary.split("\n")) {
+            list.add(sentence);
+        }
+        return new Summary(list);
+    }
+
+    public void revise(int index, String sentence) {
+        // todo : 이렇게 하면 덮어쓰나?
+        sentences.set(index, sentence);
+    }
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/vo/Thumbnail.java

@@ -0,0 +1,17 @@
+package kusitms.duduk.domain.newsletter.vo;
+
+import lombok.Getter;
+
+@Getter
+public class Thumbnail {
+
+    private String url;
+
+    private Thumbnail(String url) {
+        this.url = url;
+    }
+
+    public static Thumbnail from(String url) {
+        return new Thumbnail(url);
+    }
+}

domain/src/main/java/kusitms/duduk/domain/newsletter/vo/Title.java

@@ -0,0 +1,21 @@
+package kusitms.duduk.domain.newsletter.vo;
+
+import lombok.Getter;
+
+@Getter
+public class Title {
+
+    private String title;
+
+    private Title(String title) {
+        this.title = title;
+    }
+
+    public static Title from(String title) {
+        return new Title(title);
+    }
+
+    public void revise(String title) {
+        this.title = title;
+    }
+}

domain/src/test/java/kusitms/duduk/domain/newsletter/NewsLetterTest.java

@@ -0,0 +1,50 @@
+package kusitms.duduk.domain.newsletter;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+import kusitms.duduk.domain.global.Category;
+import kusitms.duduk.domain.global.Count;
+import kusitms.duduk.domain.newsletter.vo.Content;
+import kusitms.duduk.domain.newsletter.vo.Keywords;
+import kusitms.duduk.domain.newsletter.vo.Summary;
+import kusitms.duduk.domain.newsletter.vo.Thumbnail;
+import kusitms.duduk.domain.newsletter.vo.Title;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+@DisplayName("NewsLetter 테스트")
+class NewsLetterTest {
+
+    @Test
+    void 뉴스_레터_객체를_생성한다() {
+        // given
+        String title = "title";
+        String content = "content";
+        String thumbnail = "thumbnail";
+        String keywords = "keyword1,keyword2,keyword3";
+        String stock = "주식";
+        String summary = "summary\nsummary\nsummary";
+
+        // when
+        NewsLetter newsLetter = NewsLetter.builder()
+            .title(Title.from(title))
+            .content(Content.from(content))
+            .thumbnail(Thumbnail.from(thumbnail))
+            .keywords(Keywords.from(keywords))
+            .category(Category.from(stock))
+            .summary(Summary.from(summary))
+            .viewCount(Count.initial())
+            .scrapCount(Count.from(6))
+            .build();
+
+        // then
+        assertThat(newsLetter.getTitle().getTitle()).isEqualTo(title);
+        assertThat(newsLetter.getContent().getContent()).isEqualTo(content);
+        assertThat(newsLetter.getThumbnail().getUrl()).isEqualTo(thumbnail);
+        assertThat(newsLetter.getKeywords().getWords().size()).isEqualTo(3);
+        assertThat(newsLetter.getCategory().getDescription()).isEqualTo(stock);
+        assertThat(newsLetter.getSummary().getSentences().size()).isEqualTo(3);
+        assertThat(newsLetter.getViewCount().getCount()).isEqualTo(0);
+        assertThat(newsLetter.getScrapCount().getCount()).isEqualTo(6);
+    }
+}

domain/src/test/java/kusitms/duduk/domain/user/UserTest.java

@@ -7,8 +7,10 @@
 import kusitms.duduk.domain.user.vo.Gender;
 import kusitms.duduk.domain.user.vo.Nickname;
 import kusitms.duduk.domain.user.vo.RefreshToken;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
+@DisplayName("User 테스트")
 public class UserTest {
 
     @Test