From 6cda73270fb36c1c099a4687cb0c2ea4abbeab90 Mon Sep 17 00:00:00 2001
From: Klaus <klaus@vividnext.co.kr>
Date: Fri, 10 Jul 2026 08:56:32 +0900
Subject: [PATCH] =?UTF-8?q?feat(home):=20=EC=9D=B8=EA=B8=B0=20=EC=BB=A4?=
 =?UTF-8?q?=EB=AE=A4=EB=8B=88=ED=8B=B0=20=EB=B9=88=20=EC=8A=A4=EB=83=85?=
 =?UTF-8?q?=EC=83=B7=20marker=EB=A5=BC=20=EC=A0=80=EC=9E=A5=ED=95=9C?=
 =?UTF-8?q?=EB=8B=A4?=
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---
 ...ecommendationSnapshotPersistenceAdapter.kt |  4 +-
 ...mendationSnapshotPersistenceAdapterTest.kt | 47 +++++++++++++++++++
 2 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapter.kt b/src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapter.kt
index 9ea998f6..f4a030e1 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapter.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapter.kt
@@ -84,7 +84,9 @@ class RecommendationSnapshotPersistenceAdapter(
     }
 
     private fun supportsEmptySnapshotMarker(sectionType: RecommendedSectionType): Boolean {
-        return sectionType == RecommendedSectionType.AI_CHARACTER || sectionType == RecommendedSectionType.CHEER_CREATOR
+        return sectionType == RecommendedSectionType.AI_CHARACTER ||
+            sectionType == RecommendedSectionType.CHEER_CREATOR ||
+            sectionType == RecommendedSectionType.POPULAR_COMMUNITY
     }
 
     companion object {
diff --git a/src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapterTest.kt b/src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapterTest.kt
index 2fcceb97..5704f384 100644
--- a/src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapterTest.kt
+++ b/src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/RecommendationSnapshotPersistenceAdapterTest.kt
@@ -217,6 +217,25 @@ class RecommendationSnapshotPersistenceAdapterTest @Autowired constructor(
         )
     }
 
+    @Test
+    fun shouldSavePopularCommunityEmptySnapshotMarkerWhenReplacingWithEmptySnapshots() {
+        val snapshotAt = LocalDateTime.of(2026, 5, 29, 23, 59, 59)
+
+        adapter.replaceSnapshots(RecommendedSectionType.POPULAR_COMMUNITY, snapshotAt, emptyList())
+
+        assertEquals(
+            emptyList<RecommendationSnapshotRecord>(),
+            adapter.findSnapshots(RecommendedSectionType.POPULAR_COMMUNITY, snapshotAt)
+        )
+        assertEquals(true, adapter.existsSnapshot(RecommendedSectionType.POPULAR_COMMUNITY, snapshotAt))
+        assertEquals(
+            listOf(0L),
+            repository.findAll()
+                .filter { it.sectionType == RecommendedSectionType.POPULAR_COMMUNITY }
+                .map { it.targetId }
+        )
+    }
+
     @Test
     fun shouldReplaceCheerCreatorEmptyMarkerWithRealSnapshots() {
         val snapshotAt = LocalDateTime.of(2026, 5, 29, 23, 59, 59)
@@ -245,6 +264,34 @@ class RecommendationSnapshotPersistenceAdapterTest @Autowired constructor(
         )
     }
 
+    @Test
+    fun shouldReplacePopularCommunityEmptyMarkerWithRealSnapshots() {
+        val snapshotAt = LocalDateTime.of(2026, 5, 29, 23, 59, 59)
+        adapter.replaceSnapshots(RecommendedSectionType.POPULAR_COMMUNITY, snapshotAt, emptyList())
+
+        adapter.replaceSnapshots(
+            RecommendedSectionType.POPULAR_COMMUNITY,
+            snapshotAt,
+            listOf(
+                RecommendationSnapshotRecord(
+                    sectionType = RecommendedSectionType.POPULAR_COMMUNITY,
+                    targetId = 19L,
+                    score = 190.0,
+                    snapshotAt = snapshotAt,
+                    randomTieBreaker = 0.9
+                )
+            )
+        )
+
+        assertEquals(listOf(19L), adapter.findSnapshots(RecommendedSectionType.POPULAR_COMMUNITY, snapshotAt).map { it.targetId })
+        assertEquals(
+            listOf(19L),
+            repository.findAll()
+                .filter { it.sectionType == RecommendedSectionType.POPULAR_COMMUNITY }
+                .map { it.targetId }
+        )
+    }
+
     private fun snapshot(
         sectionType: RecommendedSectionType,
         targetId: Long,