feat(recommendation): 추천 배너 언어 필터를 적용한다

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/home/application/HomeRecommendationFacadeTest.kt

@@ -1,5 +1,6 @@
 package kr.co.vividnext.sodalive.v2.api.home.application
 
+import kr.co.vividnext.sodalive.i18n.Lang
 import kr.co.vividnext.sodalive.member.Member
 import kr.co.vividnext.sodalive.member.contentpreference.MemberContentPreferenceService
 import kr.co.vividnext.sodalive.v2.recommendation.application.HomeRecommendationQueryService
@@ -56,6 +57,27 @@ class HomeRecommendationFacadeTest {
         assertTrue(queryPort.bannerIncludeAdultBanners)
     }
 
+    @Test
+    @DisplayName("홈 추천은 JP 국가 판정이면 JA 배너 조회를 요청한다")
+    fun shouldPassJaToHomeBannerQueryForJapan() {
+        val member = Member(password = "password", nickname = "jp-member").apply { id = 11L }
+        Mockito.doReturn("JP").`when`(preferenceService).resolveCountryCode(member)
+
+        facade.getHomeRecommendations(member)
+
+        assertTrue(queryPort.bannerLang == Lang.JA)
+    }
+
+    @Test
+    @DisplayName("홈 추천은 JP 이외 국가 판정이면 KO 배너 조회를 요청한다")
+    fun shouldPassKoToHomeBannerQueryForNonJapan() {
+        Mockito.doReturn("KR").`when`(preferenceService).resolveCountryCode(null)
+
+        facade.getHomeRecommendations(null)
+
+        assertTrue(queryPort.bannerLang == Lang.KO)
+    }
+
     private fun firstAudio(price: Int, isPointAvailable: Boolean): HomeFirstAudioContentRecord {
         return HomeFirstAudioContentRecord(
             contentId = price.toLong() + 1,
@@ -74,6 +96,7 @@ class HomeRecommendationFacadeTest {
     private class FakeHomeRecommendationQueryPort : HomeRecommendationQueryPort {
         var firstAudioContents: List<HomeFirstAudioContentRecord> = emptyList()
         var bannerIncludeAdultBanners: Boolean = false
+        var bannerLang: Lang? = null
 
         override fun findLiveRecommendations(
             offset: Long,
@@ -85,9 +108,11 @@ class HomeRecommendationFacadeTest {
         override fun findHomeBanners(
             limit: Int,
             memberId: Long?,
-            includeAdultBanners: Boolean
+            includeAdultBanners: Boolean,
+            lang: Lang
         ): List<HomeBannerRecommendationRecord> {
             bannerIncludeAdultBanners = includeAdultBanners
+            bannerLang = lang
             return emptyList()
         }