feat(chat): 채팅 탭 화면 동작을 연결한다

app/src/test/java/kr/co/vividnext/sodalive/v2/main/chat/ChatMainFragmentLayoutTest.kt

@@ -23,6 +23,7 @@ import org.junit.Test
 import org.junit.runner.RunWith
 import org.robolectric.RobolectricTestRunner
 import org.robolectric.annotation.Config
+import java.io.File
 
 @RunWith(RobolectricTestRunner::class)
 @Config(sdk = [28], application = Application::class)
@@ -83,11 +84,80 @@ class ChatMainFragmentLayoutTest {
         assertEquals(ConstraintLayout.LayoutParams.PARENT_ID, buttonParams.bottomToBottom)
     }
 
+    @Test
+    fun `채팅 fragment source는 화면 초기 구성과 첫 페이지 로드를 연결한다`() {
+        val source = chatMainFragmentSource()
+
+        assertTrue(source.contains("private val viewModel: ChatMainViewModel by viewModel()"))
+        assertTrue(source.contains("ChatRoomListAdapter"))
+        assertTrue(source.contains("LoadingDialog(requireActivity(), layoutInflater)"))
+        assertTrue(source.contains("tvTitleBarTitle.setText(R.string.tab_chat)"))
+        assertTrue(source.contains("ivTitleBarMenu.setImageResource(R.drawable.ic_bar_cash)"))
+        assertTrue(source.contains("llTitleBarActions.addView"))
+        assertTrue(source.contains("setImageResource(R.drawable.ic_bar_search)"))
+        assertTrue(source.contains("setMenus("))
+        assertTrue(source.contains("R.string.screen_chat_filter_all"))
+        assertTrue(source.contains("R.string.screen_chat_filter_ai"))
+        assertTrue(source.contains("R.string.screen_chat_filter_dm"))
+        assertTrue(source.contains("viewModel.loadFirstPage()"))
+    }
+
+    @Test
+    fun `채팅 fragment source는 filter list pagination observe를 연결한다`() {
+        val source = chatMainFragmentSource()
+
+        assertTrue(source.contains("setOnTabSelectedListener"))
+        assertTrue(source.contains("ChatRoomFilter.fromTabIndex(index)"))
+        assertTrue(source.contains("LinearLayoutManager(requireContext())"))
+        assertTrue(source.contains("rvChatRooms.adapter = chatRoomListAdapter"))
+        assertTrue(source.contains("addOnScrollListener(object : RecyclerView.OnScrollListener()"))
+        assertTrue(source.contains("findLastVisibleItemPosition()"))
+        assertTrue(source.contains("viewModel.loadNextPage()"))
+        assertTrue(source.contains("chatRoomStateLiveData.observe(viewLifecycleOwner)"))
+        assertTrue(source.contains("ChatRoomListUiState.Content"))
+        assertTrue(source.contains("ChatRoomListUiState.Empty"))
+        assertTrue(source.contains("ChatRoomListUiState.Error"))
+        assertTrue(source.contains("viewModel.isLoading.observe(viewLifecycleOwner)"))
+        assertTrue(source.contains("viewModel.toastLiveData.observe(viewLifecycleOwner)"))
+    }
+
+    @Test
+    fun `채팅 fragment source는 AI 항목만 채팅방으로 이동한다`() {
+        val source = chatMainFragmentSource()
+
+        assertTrue(source.contains("private fun onChatRoomClick(item: ChatRoomListUiItem)"))
+        assertTrue(source.contains("if (item.chatType != ChatRoomType.AI) return"))
+        assertTrue(source.contains("ChatRoomActivity.newIntent(requireContext(), item.roomId)"))
+        assertTrue(source.contains("btnChatFloating.setOnClickListener { }"))
+    }
+
+    @Test
+    fun `채팅 fragment source는 탭 전환 및 첫 페이지 로딩 시 스크롤을 최상단으로 이동시킨다`() {
+        val source = chatMainFragmentSource()
+
+        assertTrue(source.contains("setOnTabSelectedListener"))
+        assertTrue(source.contains("rvChatRooms.scrollToPosition(0)"))
+        assertTrue(source.contains("!state.isAppending"))
+    }
+
     private fun inflateView(layoutResId: Int): View {
         val context = ApplicationProvider.getApplicationContext<Context>()
         return LayoutInflater.from(context).inflate(layoutResId, null, false)
     }
 
+    private fun chatMainFragmentSource(): String = projectFile(
+        "app/src/main/java/kr/co/vividnext/sodalive/v2/main/chat/ChatMainFragment.kt"
+    ).readText()
+
+    private fun projectFile(relativePath: String): File {
+        val candidates = listOf(
+            File(relativePath),
+            File("../$relativePath")
+        )
+        return candidates.firstOrNull { it.exists() }
+            ?: error("Project file not found: $relativePath")
+    }
+
     private fun View.containsViewIdContaining(idNamePart: String): Boolean {
         if (id != View.NO_ID) {
             val idName = runCatching { resources.getResourceEntryName(id) }.getOrNull()