feat(creator): 후원 empty 랭킹 상태를 유지한다

app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/donation/CreatorChannelDonationViewModel.kt

@@ -151,10 +151,11 @@ class CreatorChannelDonationViewModel(
             val data = response.data
             if (response.success && data != null) {
                 val donations = data.toDonationUiModels()
+                val rankings = data.toDonationRankingUiModels()
                 _donationStateLiveData.value = if (donations.isEmpty() || data.donationCount == 0) {
-                    CreatorChannelDonationUiState.Empty(data.donationCount, isOwner)
+                    CreatorChannelDonationUiState.Empty(data.donationCount, rankings, isOwner)
                 } else {
-                    data.toContentState(donations)
+                    data.toContentState(rankings, donations)
                 }
             } else {
                 _donationStateLiveData.value = CreatorChannelDonationUiState.Error(response.message)
@@ -205,10 +206,11 @@ class CreatorChannelDonationViewModel(
     }
 
     private fun CreatorChannelDonationTabResponse.toContentState(
+        rankings: List<CreatorChannelDonationRankingUiModel>,
         donations: List<CreatorChannelDonationUiModel>
     ) = CreatorChannelDonationUiState.Content(
         donationCount = donationCount,
-        rankings = toDonationRankingUiModels(),
+        rankings = rankings,
         donations = donations,
         page = page,
         size = size,
@@ -234,6 +236,7 @@ sealed interface CreatorChannelDonationUiState {
     data object Loading : CreatorChannelDonationUiState
     data class Empty(
         val donationCount: Int,
+        val rankings: List<CreatorChannelDonationRankingUiModel>,
         val isOwner: Boolean,
         val actionToastMessage: String? = null
     ) : CreatorChannelDonationUiState

app/src/test/java/kr/co/vividnext/sodalive/v2/creator/channel/donation/CreatorChannelDonationViewModelTest.kt

@@ -20,7 +20,6 @@ import kr.co.vividnext.sodalive.v2.creator.channel.donation.data.CreatorChannelD
 import kr.co.vividnext.sodalive.v2.creator.channel.donation.data.MemberDonationRankingResponse
 import org.junit.After
 import org.junit.Assert.assertEquals
-import org.junit.Assert.assertTrue
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -80,15 +79,17 @@ class CreatorChannelDonationViewModelTest {
 
         val state = viewModel.donationStateLiveData.requireValue() as CreatorChannelDonationUiState.Empty
         assertEquals(0, state.donationCount)
+        assertEquals(listOf(10L), state.rankings.map { it.userId })
     }
 
     @Test
-    fun `표시 가능한 donations가 없으면 Empty 상태가 된다`() {
+    fun `표시 가능한 donations가 없으면 랭킹을 유지한 Empty 상태가 된다`() {
         stubGetDonations(response = Single.just(ApiResponse(true, donationResponse(ids = emptyList()), null)))
 
         viewModel.loadDonations(100L, isOwner = false)
 
-        assertTrue(viewModel.donationStateLiveData.requireValue() is CreatorChannelDonationUiState.Empty)
+        val state = viewModel.donationStateLiveData.requireValue() as CreatorChannelDonationUiState.Empty
+        assertEquals(listOf(10L), state.rankings.map { it.userId })
     }
 
     @Test