fix: add isModified column

src/main/java/gymmi/photoboard/domain/entity/PhotoFeed.java

@@ -27,17 +27,21 @@ public class PhotoFeed extends TimeEntity {
     @Column
     private String comment;
 
+    @Column(nullable = false)
+    private Boolean isModified;
+
     @Column(nullable = false)
     private Integer thumpsUpCount;
 
     public PhotoFeed(User user, String comment) {
         this.user = user;
         this.comment = comment;
+        this.isModified = false;
         this.thumpsUpCount = 0;
     }
 
     public boolean isModified() {
-        return !getCreatedAt().isEqual(getLastModifiedAt());
+        return isModified;
     }
 
     public void increase() {

src/main/resources/db/migration/V241128.2__add_column.sql

@@ -0,0 +1 @@
+alter table photo_feed add column is_modified boolean not null;

src/test/java/gymmi/photoboard/domain/entity/PhotoFeedTest.java

@@ -15,23 +15,6 @@
 
 class PhotoFeedTest {
 
-    @ParameterizedTest
-    @CsvSource(value = {"1,true", "0,false"})
-    void 수정여부를_확인_한다(int plusDay, boolean isModified) {
-        // given
-        LocalDateTime now = LocalDateTime.now();
-        PhotoFeed photoFeed = Instancio.of(PhotoFeed.class)
-                .set(Select.field(PhotoFeed::getCreatedAt), now)
-                .set(Select.field(PhotoFeed::getLastModifiedAt), now.plusDays(plusDay))
-                .create();
-
-        // when
-        boolean result = photoFeed.isModified();
-
-        // then
-        assertThat(result).isEqualTo(isModified);
-    }
-
     @Test
     void 작성자가_아닌_경우_예외가_발생한다() {
         // given