Fixed the ZimManageViewModelTest.

app/src/main/java/org/kiwix/kiwixmobile/zimManager/ZimManageViewModel.kt

@@ -129,6 +129,7 @@ class ZimManageViewModel @Inject constructor(
     object UserClickedDownloadBooksButton : FileSelectActions()
   }
 
+  private var isUnitTestCase: Boolean = false
   val sideEffects = PublishProcessor.create<SideEffect<Any?>>()
   val libraryItems: MutableLiveData<List<LibraryListItem>> = MutableLiveData()
   val fileSelectListStates: MutableLiveData<FileSelectListState> = MutableLiveData()
@@ -150,7 +151,12 @@ class ZimManageViewModel @Inject constructor(
     context.registerReceiver(connectivityBroadcastReceiver)
   }
 
+  fun setIsUnitTestCase() {
+    isUnitTestCase = true
+  }
+
   private fun createKiwixServiceWithProgressListener(): KiwixService {
+    if (isUnitTestCase) return kiwixService
     val contentLength = getContentLengthOfLibraryXmlFile()
     val customOkHttpClient = OkHttpClient().newBuilder()
       .followRedirects(true)
@@ -178,6 +184,9 @@ class ZimManageViewModel @Inject constructor(
       }
       .build()
     return KiwixService.ServiceCreator.newHackListService(customOkHttpClient, KIWIX_DOWNLOAD_URL)
+      .also {
+        kiwixService = it
+      }
   }
 
   private fun getContentLengthOfLibraryXmlFile(): Long {
@@ -327,7 +336,12 @@ class ZimManageViewModel @Inject constructor(
       .subscribeOn(Schedulers.io())
       .observeOn(Schedulers.io())
       .concatMap {
-        createKiwixServiceWithProgressListener().library
+        Flowable.fromCallable {
+          synchronized(this, ::createKiwixServiceWithProgressListener)
+        }
+      }
+      .concatMap {
+        kiwixService.library
           .toFlowable()
           .retry(5)
           .doOnSubscribe {
@@ -347,7 +361,9 @@ class ZimManageViewModel @Inject constructor(
             LibraryNetworkEntity().apply { book = LinkedList() }
           }
       }
-      .subscribe(library::onNext, Throwable::printStackTrace)
+      .subscribe(library::onNext, Throwable::printStackTrace).also {
+        compositeDisposable?.add(it)
+      }
 
   private fun updateNetworkStates() =
     connectivityBroadcastReceiver.networkStates.subscribe(

app/src/test/java/org/kiwix/kiwixmobile/zimManager/ZimManageViewModelTest.kt

@@ -157,7 +157,7 @@ class ZimManageViewModelTest {
       dataSource,
       connectivityManager,
       sharedPreferenceUtil
-    )
+    ).apply(ZimManageViewModel::setIsUnitTestCase)
     testScheduler.triggerActions()
   }
 
@@ -333,6 +333,7 @@ class ZimManageViewModelTest {
       defaultLanguage: Language
     ) {
       every { application.getString(any()) } returns ""
+      every { application.getString(any(), any()) } returns ""
       every { kiwixService.library } returns Single.just(
         libraryNetworkEntity(networkBooks)
       )
@@ -372,6 +373,8 @@ class ZimManageViewModelTest {
       language = "inactiveLanguage",
       url = ""
     )
+    every { application.getString(any()) } returns ""
+    every { application.getString(any(), any()) } returns ""
     every { kiwixService.library } returns Single.just(
       libraryNetworkEntity(
         listOf(
@@ -412,6 +415,8 @@ class ZimManageViewModelTest {
       url = "",
       size = "${Fat32Checker.FOUR_GIGABYTES_IN_KILOBYTES + 1}"
     )
+    every { application.getString(any()) } returns ""
+    every { application.getString(any(), any()) } returns ""
     every { kiwixService.library } returns Single.just(
       libraryNetworkEntity(
         listOf(bookOver4Gb)

core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt

@@ -288,7 +288,7 @@ class SharedPreferenceUtil @Inject constructor(val context: Context) {
     }
 
   fun getPublicDirectoryPath(path: String): String =
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
       path
     } else {
       path.substringBefore(context.getString(R.string.android_directory_seperator))