[test/#420] Recommendation 회귀 테스트 보강 (#449)

* test: MMR 서비스 단위 테스트 작성

* test: 추천 재생성 API 서비스 단위 테스트 작성

* test: 스케쥴러 단위 테스트 작성

* test: 리포지토리 단위 테스트 작성

* test: 추천 이력 엔티티 단위 테스트 작성

* test: 통합 테스트를 integration 패키지로 네이밍을 바꾸고 Nested 구조로 변경

* test: post 픽스쳐를 네이밍 명확화

* test: Recommendation 패키지의 fixture를 공통으로 분리

* test: query 테스트도 정확한 목록을 체크하도록 변경

* test: 통합 테스트의 네이밍 명확화

* refactor: 메서드 네이밍 오타 정정

* test: Mockito Matcher를 인라인화

Author: Dimo-2562

src/main/java/com/techfork/domain/recommendation/entity/RecommendationHistory.java

@@ -85,7 +85,7 @@ public static RecommendationHistory fromRecommendedPost(RecommendedPost recommen
     /**
      * 클릭 기록
      */
-    public void markAsisClicked() {
+    public void markAsClicked() {
         this.isClicked = true;
         this.clickedAt = LocalDateTime.now();
     }

src/test/java/com/techfork/domain/recommendation/controller/RecommendationControllerIntegrationTest.java

@@ -5,13 +5,16 @@
 import com.techfork.domain.recommendation.entity.RecommendedPost;
 import com.techfork.domain.source.entity.TechBlog;
 import com.techfork.useraccount.domain.User;
-import com.techfork.useraccount.domain.enums.SocialType;
 import com.techfork.global.util.CloudflareThirdPartyThumbnailOptimizer;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import java.time.LocalDateTime;
 
+import static com.techfork.domain.recommendation.fixture.RecommendationPostFixture.post;
+import static com.techfork.domain.recommendation.fixture.RecommendedPostFixture.recommendedPost;
+import static com.techfork.domain.recommendation.fixture.RecommendationPostFixture.techBlog;
+import static com.techfork.domain.recommendation.fixture.RecommendationUserFixture.user;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
@@ -24,32 +27,20 @@ void toRecommendedPostDto_OptimizesThumbnailUrl() {
         CloudflareThirdPartyThumbnailOptimizer thumbnailOptimizer = mock(CloudflareThirdPartyThumbnailOptimizer.class);
         RecommendationConverter converter = new RecommendationConverter(thumbnailOptimizer);
 
-        TechBlog techBlog = TechBlog.create(
-                "테스트 회사",
-                "https://techfork.com",
-                "https://techfork.com/rss",
-                "https://techfork.com/logo.png"
+        TechBlog techBlog = techBlog("테스트 회사", "https://techfork.com");
+        Post post = post(
+                techBlog,
+                "게시글",
+                "전체 내용",
+                "본문 내용",
+                null,
+                "요약",
+                "https://images.example.com/thumb.jpg",
+                "https://techfork.com/posts/1",
+                LocalDateTime.now()
         );
-
-        Post post = Post.builder()
-                .title("게시글")
-                .shortSummary("요약")
-                .company("테스트 회사")
-                .url("https://techfork.com/posts/1")
-                .thumbnailUrl("https://images.example.com/thumb.jpg")
-                .publishedAt(LocalDateTime.now())
-                .crawledAt(LocalDateTime.now())
-                .techBlog(techBlog)
-                .build();
-
-        User user = User.createSocialUser(
-                SocialType.KAKAO,
-                "social-id",
-                "test@example.com",
-                "https://example.com/profile.png"
-        );
-
-        RecommendedPost recommendedPost = RecommendedPost.create(user, post, 0.9, 0.8, 1);
+        User user = user("social-id", "test@example.com");
+        RecommendedPost recommendedPost = recommendedPost(user, post, 0.9, 0.8, 1);
 
         when(thumbnailOptimizer.optimize("https://images.example.com/thumb.jpg"))
                 .thenReturn("https://api.techfork.com/cdn-cgi/image/fit=scale-down,width=480,quality=75,format=auto/https://images.example.com/thumb.jpg");

src/test/java/com/techfork/domain/recommendation/converter/RecommendationConverterTest.java

@@ -0,0 +1,58 @@
+package com.techfork.domain.recommendation.entity;
+
+import com.techfork.post.domain.Post;
+import com.techfork.useraccount.domain.User;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDateTime;
+
+import static com.techfork.domain.recommendation.fixture.RecommendationPostFixture.post;
+import static com.techfork.domain.recommendation.fixture.RecommendedPostFixture.recommendedPost;
+import static com.techfork.domain.recommendation.fixture.RecommendationPostFixture.techBlog;
+import static com.techfork.domain.recommendation.fixture.RecommendationUserFixture.user;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@DisplayName("RecommendationHistory 단위 테스트")
+class RecommendationHistoryTest {
+
+    @Test
+    @DisplayName("현재 추천 게시글로부터 추천 이력을 생성한다")
+    void fromRecommendedPost_CopiesRecommendationSnapshot() {
+        User user = user("recommendation-history-user", "history@example.com");
+        Post post = post(techBlog("테스트회사", "https://history-test.com"), "추천 이력 테스트 게시글", "https://history-test.com/posts/1");
+        RecommendedPost recommendedPost = recommendedPost(user, post, 0.91, 0.82, 3);
+
+        RecommendationHistory history = RecommendationHistory.fromRecommendedPost(recommendedPost);
+
+        assertThat(history.getUser()).isSameAs(user);
+        assertThat(history.getPost()).isSameAs(post);
+        assertThat(history.getSimilarityScore()).isEqualTo(0.91);
+        assertThat(history.getMmrScore()).isEqualTo(0.82);
+        assertThat(history.getRankOrder()).isEqualTo(3);
+        assertThat(history.getRecommendedAt()).isEqualTo(recommendedPost.getRecommendedAt());
+        assertThat(history.getIsClicked()).isFalse();
+        assertThat(history.getClickedAt()).isNull();
+    }
+
+    @Test
+    @DisplayName("추천 이력을 클릭 상태로 표시한다")
+    void markAsClicked_MarksHistoryAsClicked() {
+        RecommendationHistory history = RecommendationHistory.fromRecommendedPost(
+                recommendedPost(
+                        user("recommendation-history-user", "history@example.com"),
+                        post(techBlog("테스트회사", "https://history-test.com"), "추천 이력 테스트 게시글", "https://history-test.com/posts/1"),
+                        0.91,
+                        0.82,
+                        1
+                )
+        );
+
+        LocalDateTime beforeClick = LocalDateTime.now();
+        history.markAsClicked();
+        LocalDateTime afterClick = LocalDateTime.now();
+
+        assertThat(history.getIsClicked()).isTrue();
+        assertThat(history.getClickedAt()).isBetween(beforeClick, afterClick);
+    }
+}