test(home): 팔로잉 테스트 상태를 격리한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/home/HomeFollowingViewModel.kt

@@ -17,7 +17,8 @@ import kr.co.vividnext.sodalive.v2.main.home.model.toUiState
 
 class HomeFollowingViewModel(
     private val repository: HomeFollowingRepository,
-    private val relativeTimeTextFormatter: UtcRelativeTimeTextFormatter
+    private val relativeTimeTextFormatter: UtcRelativeTimeTextFormatter,
+    private val tokenProvider: () -> String = { SharedPreferenceManager.token }
 ) : BaseViewModel() {
 
     private val _followingStateLiveData = MutableLiveData<HomeFollowingUiState>()
@@ -64,5 +65,5 @@ class HomeFollowingViewModel(
         _toastLiveData.value = ToastMessage(resId = R.string.common_error_unknown)
     }
 
-    private fun authHeader(): String? = homeFollowingAuthHeader(SharedPreferenceManager.token)
+    private fun authHeader(): String? = homeFollowingAuthHeader(tokenProvider())
 }

app/src/test/java/kr/co/vividnext/sodalive/v2/main/home/HomeFollowingFragmentSourceTest.kt

@@ -40,7 +40,8 @@ class HomeFollowingFragmentSourceTest {
     @Test
     fun `following tab branch shows following content and hides other home surfaces`() {
         val source = homeMainFragmentSource()
-        val branch = source.substringAfter("HOME_TAB_FOLLOWING ->")
+        val branch = source.substringAfter("private fun showHomeTab(index: Int)")
+            .substringAfter("HOME_TAB_FOLLOWING ->")
             .substringBefore("}\n    }")
 
         assertTrue(branch.contains("binding.nsvHomeFollowingContent.visibility = View.VISIBLE"))

app/src/test/java/kr/co/vividnext/sodalive/v2/main/home/HomeFollowingViewModelTest.kt

@@ -1,10 +1,8 @@
 package kr.co.vividnext.sodalive.v2.main.home
 
 import android.app.Application
-import android.content.Context
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
-import androidx.test.core.app.ApplicationProvider
 import io.reactivex.rxjava3.android.plugins.RxAndroidPlugins
 import io.reactivex.rxjava3.core.Scheduler
 import io.reactivex.rxjava3.core.Single
@@ -12,7 +10,6 @@ import io.reactivex.rxjava3.plugins.RxJavaPlugins
 import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.common.ApiResponse
-import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.common.UtcRelativeTimeTextFormatter
 import kr.co.vividnext.sodalive.v2.main.home.data.FollowingCreatorResponse
 import kr.co.vividnext.sodalive.v2.main.home.data.HomeFollowingApi
@@ -33,21 +30,20 @@ import org.robolectric.annotation.Config
 @Config(sdk = [28], application = Application::class)
 class HomeFollowingViewModelTest {
 
-    private val context: Context = ApplicationProvider.getApplicationContext()
     private val formatter = UtcRelativeTimeTextFormatter { "relative:$it" }
+    private var token: String = ""
     private lateinit var api: FakeHomeFollowingApi
     private lateinit var viewModel: HomeFollowingViewModel
 
     @Before
     fun setUp() {
         setImmediateRxSchedulers()
-        SharedPreferenceManager.resetForTest()
-        SharedPreferenceManager.init(context)
-        SharedPreferenceManager.token = ""
+        token = ""
         api = FakeHomeFollowingApi()
         viewModel = HomeFollowingViewModel(
             repository = HomeFollowingRepository(api),
-            relativeTimeTextFormatter = formatter
+            relativeTimeTextFormatter = formatter,
+            tokenProvider = { token }
         )
     }
 
@@ -55,7 +51,6 @@ class HomeFollowingViewModelTest {
     fun tearDown() {
         RxJavaPlugins.reset()
         RxAndroidPlugins.reset()
-        SharedPreferenceManager.resetForTest()
     }
 
     @Test
@@ -71,7 +66,7 @@ class HomeFollowingViewModelTest {
 
     @Test
     fun `blank token이면 repository에 null auth header를 전달한다`() {
-        SharedPreferenceManager.token = "   "
+        token = "   "
         api.enqueueSuccess(response(followingCreators = listOf(creator())))
 
         viewModel.loadFollowing()
@@ -81,7 +76,7 @@ class HomeFollowingViewModelTest {
 
     @Test
     fun `token이 있으면 repository에 Bearer auth header를 전달한다`() {
-        SharedPreferenceManager.token = "test-token"
+        token = "test-token"
         api.enqueueSuccess(response(followingCreators = listOf(creator())))
 
         viewModel.loadFollowing()