Fixed: NavController adding multiple instances of the same fragment in backStack with causing issues when navigating.

* Refactored the `DarkModeViewPainterTest` with compose UI.
* Refactored the `CopyMoveFileHandlerTest` according to compose UI.
* Refactored the test cases to get the fragments in test cases according to compose based navigation.
* Refactored the `SearchFragmentTestForCustomApp` test case.

app/src/androidTest/java/org/kiwix/kiwixmobile/download/DownloadTest.kt

@@ -193,7 +193,7 @@ class DownloadTest : BaseActivityTest() {
       downloadRobot {
         // change the application language
         topLevel {
-          clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity) {
+          clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
             clickLanguagePreference(composeTestRule)
             assertLanguagePrefDialogDisplayed(composeTestRule)
             selectDeviceDefaultLanguage(composeTestRule)
@@ -214,7 +214,7 @@ class DownloadTest : BaseActivityTest() {
         stopDownloadIfAlreadyStarted(composeTestRule)
         // select the default device language to perform other test cases.
         topLevel {
-          clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity) {
+          clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
             clickLanguagePreference(composeTestRule)
             assertLanguagePrefDialogDisplayed(composeTestRule)
             selectDeviceDefaultLanguage(composeTestRule)

app/src/androidTest/java/org/kiwix/kiwixmobile/localLibrary/CopyMoveFileHandlerTest.kt

@@ -39,7 +39,6 @@ import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
 import org.kiwix.kiwixmobile.BaseActivityTest
-import org.kiwix.kiwixmobile.R
 import org.kiwix.kiwixmobile.core.extensions.deleteFile
 import org.kiwix.kiwixmobile.core.extensions.isFileExist
 import org.kiwix.kiwixmobile.core.settings.StorageCalculator
@@ -50,6 +49,7 @@ import org.kiwix.kiwixmobile.core.utils.TestingUtils.RETRY_RULE_ORDER
 import org.kiwix.kiwixmobile.core.utils.dialog.AlertDialogShower
 import org.kiwix.kiwixmobile.main.KiwixMainActivity
 import org.kiwix.kiwixmobile.nav.destination.library.CopyMoveFileHandler
+import org.kiwix.kiwixmobile.nav.destination.library.local.LocalLibraryFragment
 import org.kiwix.kiwixmobile.testutils.RetryRule
 import org.kiwix.kiwixmobile.testutils.TestUtils
 import org.kiwix.kiwixmobile.testutils.TestUtils.waitUntilTimeout
@@ -201,33 +201,29 @@ class CopyMoveFileHandlerTest : BaseActivityTest() {
   }
 
   private fun showMoveFileToPublicDirectoryDialog() {
-    // TODO refactore this with compose based navController.
+    kiwixMainActivity.lifecycleScope.launch {
-    // kiwixMainActivity.lifecycleScope.launch {
+      val localLibraryFragment =
-    //   val navHostFragment: NavHostFragment =
+        kiwixMainActivity.supportFragmentManager.fragments
-    //     kiwixMainActivity.navController
+          .filterIsInstance<LocalLibraryFragment>()
-    //       .findFragmentById(R.id.nav_host_fragment) as NavHostFragment
+          .firstOrNull()
-    //   val localLibraryFragment =
+      localLibraryFragment?.copyMoveFileHandler?.showMoveFileToPublicDirectoryDialog(
-    //     navHostFragment.childFragmentManager.fragments[0] as LocalLibraryFragment
+        Uri.fromFile(selectedFile),
-    //   localLibraryFragment.copyMoveFileHandler?.showMoveFileToPublicDirectoryDialog(
+        DocumentFile.fromFile(selectedFile),
-    //     Uri.fromFile(selectedFile),
+        fragmentManager = localLibraryFragment.parentFragmentManager
-    //     DocumentFile.fromFile(selectedFile),
+      )
-    //     fragmentManager = localLibraryFragment.parentFragmentManager
+    }
-    //   )
-    // }
   }
 
   private fun tryOpeningInvalidZimFiles(uri: Uri) {
-    // TODO refactore this with compose based navController.
+    UiThreadStatement.runOnUiThread {
-    // UiThreadStatement.runOnUiThread {
+      val localLibraryFragment =
-    //   val navHostFragment: NavHostFragment =
+        kiwixMainActivity.supportFragmentManager.fragments
-    //     kiwixMainActivity.supportFragmentManager
+          .filterIsInstance<LocalLibraryFragment>()
-    //       .findFragmentById(R.id.nav_host_fragment) as NavHostFragment
+          .firstOrNull()
-    //   val localLibraryFragment =
+      localLibraryFragment?.handleSelectedFileUri(
-    //     navHostFragment.childFragmentManager.fragments[0] as LocalLibraryFragment
+        uri,
-    //   localLibraryFragment.handleSelectedFileUri(
+      )
-    //     uri,
+    }
-    //   )
-    // }
   }
 
   private fun getSelectedFile(): File {

app/src/androidTest/java/org/kiwix/kiwixmobile/main/DarkModeViewPainterTest.kt

@@ -19,6 +19,8 @@
 package org.kiwix.kiwixmobile.main
 
 import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithTag
+import androidx.compose.ui.test.performClick
 import androidx.core.content.edit
 import androidx.core.net.toUri
 import androidx.lifecycle.Lifecycle
@@ -27,7 +29,6 @@ import androidx.preference.PreferenceManager
 import androidx.test.core.app.ActivityScenario
 import androidx.test.espresso.accessibility.AccessibilityChecks
 import androidx.test.espresso.matcher.ViewMatchers.withContentDescription
-import androidx.test.internal.runner.junit4.statement.UiThreadStatement
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.uiautomator.UiDevice
 import com.google.android.apps.common.testing.accessibility.framework.AccessibilityCheckResultUtils.matchesCheck
@@ -42,13 +43,17 @@ import org.junit.Rule
 import org.junit.Test
 import org.kiwix.kiwixmobile.BaseActivityTest
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
+import org.kiwix.kiwixmobile.core.ui.components.NAVIGATION_ICON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.utils.LanguageUtils
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil
 import org.kiwix.kiwixmobile.core.utils.TestingUtils.COMPOSE_TEST_RULE_ORDER
 import org.kiwix.kiwixmobile.core.utils.TestingUtils.RETRY_RULE_ORDER
+import org.kiwix.kiwixmobile.nav.destination.reader.KiwixReaderFragment
 import org.kiwix.kiwixmobile.settings.settingsRobo
 import org.kiwix.kiwixmobile.testutils.RetryRule
 import org.kiwix.kiwixmobile.testutils.TestUtils
+import org.kiwix.kiwixmobile.testutils.TestUtils.TEST_PAUSE_MS_FOR_DOWNLOAD_TEST
+import org.kiwix.kiwixmobile.testutils.TestUtils.waitUntilTimeout
 import org.kiwix.kiwixmobile.ui.KiwixDestination
 import java.io.File
 import java.io.FileOutputStream
@@ -85,6 +90,7 @@ class DarkModeViewPainterTest : BaseActivityTest() {
       ActivityScenario.launch(KiwixMainActivity::class.java).apply {
         moveToState(Lifecycle.State.RESUMED)
         onActivity {
+          kiwixMainActivity = it
           LanguageUtils.handleLocaleChange(
             it,
             "en",
@@ -111,6 +117,7 @@ class DarkModeViewPainterTest : BaseActivityTest() {
 
   @Test
   fun testDarkMode() {
+    composeTestRule.waitForIdle()
     toggleDarkMode(true)
     openZimFileInReader()
     verifyDarkMode(true)
@@ -122,13 +129,19 @@ class DarkModeViewPainterTest : BaseActivityTest() {
   private fun openZimFileInReader() {
     activityScenario.onActivity {
       kiwixMainActivity = it
-      kiwixMainActivity.navigate(KiwixDestination.Library.route)
+    }
+    composeTestRule.apply {
+      waitUntilTimeout()
+      onNodeWithTag(NAVIGATION_ICON_TESTING_TAG).performClick()
+      waitUntilTimeout()
+      onNodeWithTag(BOTTOM_NAV_LIBRARY_ITEM_TESTING_TAG).performClick()
+      waitUntilTimeout()
     }
     loadZimFileInReader()
   }
 
   private fun toggleDarkMode(enable: Boolean) {
-    darkModeViewPainter { openSettings(kiwixMainActivity as CoreMainActivity) }
+    darkModeViewPainter { openSettings(kiwixMainActivity as CoreMainActivity, composeTestRule) }
     settingsRobo { clickNightModePreference(composeTestRule) }
     darkModeViewPainter {
       if (enable) {
@@ -136,33 +149,33 @@ class DarkModeViewPainterTest : BaseActivityTest() {
       } else {
         enableTheLightMode(composeTestRule)
       }
-      pressBack()
     }
   }
 
   private fun verifyDarkMode(isEnabled: Boolean) {
-    // TODO refactor this with compose based navController.
+    var kiwixReaderFragment: KiwixReaderFragment? = null
-    // UiThreadStatement.runOnUiThread {
+    composeTestRule.waitForIdle()
-    //   val navHostFragment: NavHostFragment =
+    composeTestRule.waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
-    //     kiwixMainActivity.supportFragmentManager
+      kiwixReaderFragment =
-    //       .findFragmentById(R.id.nav_host_fragment) as NavHostFragment
+        kiwixMainActivity.supportFragmentManager.fragments
-    //   val kiwixReaderFragment =
+          .filterIsInstance<KiwixReaderFragment>()
-    //     navHostFragment.childFragmentManager.fragments[0] as KiwixReaderFragment
+          .firstOrNull()
-    //   val currentWebView = kiwixReaderFragment.getCurrentWebView()
+      kiwixReaderFragment?.getCurrentWebView() != null
-    //   currentWebView?.let {
+    }
-    //     darkModeViewPainter {
+    val currentWebView = kiwixReaderFragment?.getCurrentWebView()
-    //       if (isEnabled) {
+    currentWebView?.let {
-    //         assertNightModeEnabled(it)
+      darkModeViewPainter {
-    //       } else {
+        if (isEnabled) {
-    //         assertLightModeEnabled(it)
+          assertNightModeEnabled(it)
-    //       }
+        } else {
-    //     }
+          assertLightModeEnabled(it)
-    //   } ?: run {
+        }
-    //     throw RuntimeException(
+      }
-    //       "Could not check the dark mode enable or not because zim file is not loaded in the reader"
+    } ?: run {
-    //     )
+      throw RuntimeException(
-    //   }
+        "Could not check the dark mode enable or not because zim file is not loaded in the reader"
-    // }
+      )
+    }
   }
 
   private fun loadZimFileInReader() {
@@ -185,7 +198,10 @@ class DarkModeViewPainterTest : BaseActivityTest() {
         }
       }
     }
-    UiThreadStatement.runOnUiThread {
+    activityScenario.onActivity {
+      kiwixMainActivity = it
+    }
+    composeTestRule.runOnIdle {
       val navOptions = NavOptions.Builder()
         .setPopUpTo(KiwixDestination.Reader.route, false)
         .build()

app/src/androidTest/java/org/kiwix/kiwixmobile/main/TopLevelDestinationRobot.kt

@@ -20,15 +20,16 @@ package org.kiwix.kiwixmobile.main
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.performClick
-import androidx.test.espresso.Espresso.onView
-import androidx.test.espresso.action.ViewActions.click
-import androidx.test.espresso.matcher.ViewMatchers.withText
 import applyWithViewHierarchyPrinting
 import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import org.kiwix.kiwixmobile.BaseRobot
-import org.kiwix.kiwixmobile.Findable.StringId.TextId
-import org.kiwix.kiwixmobile.core.R.string
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_BOOKMARK_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_HELP_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_HISTORY_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_SETTINGS_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_SUPPORT_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_ZIM_HOST_ITEM_TESTING_TAG
 import org.kiwix.kiwixmobile.help.HelpRobot
 import org.kiwix.kiwixmobile.help.help
 import org.kiwix.kiwixmobile.nav.destination.library.LibraryRobot
@@ -99,47 +100,79 @@ class TopLevelDestinationRobot : BaseRobot() {
 
   fun clickBookmarksOnNavDrawer(
     coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
     func: BookmarksRobot.() -> Unit
   ) {
     inNavDrawer(coreMainActivity = coreMainActivity) {
-      testFlakyView({ onView(withText(string.bookmarks)).perform(click()) })
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_BOOKMARK_ITEM_TESTING_TAG).performClick()
+      })
       bookmarks(func)
       pressBack()
     }
   }
 
-  fun clickHistoryOnSideNav(coreMainActivity: CoreMainActivity, func: HistoryRobot.() -> Unit) {
+  fun clickHistoryOnSideNav(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
+    func: HistoryRobot.() -> Unit
+  ) {
     inNavDrawer(coreMainActivity) {
-      clickOn(TextId(string.history))
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_HISTORY_ITEM_TESTING_TAG).performClick()
+      })
       history(func)
       pressBack()
     }
   }
 
-  fun clickHostBooksOnSideNav(coreMainActivity: CoreMainActivity, func: ZimHostRobot.() -> Unit) {
+  fun clickHostBooksOnSideNav(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
+    func: ZimHostRobot.() -> Unit
+  ) {
     inNavDrawer(coreMainActivity) {
-      clickOn(TextId(string.menu_wifi_hotspot))
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_ZIM_HOST_ITEM_TESTING_TAG).performClick()
+      })
       zimHost(func)
     }
   }
 
-  fun clickSettingsOnSideNav(coreMainActivity: CoreMainActivity, func: SettingsRobot.() -> Unit) {
+  fun clickSettingsOnSideNav(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
+    func: SettingsRobot.() -> Unit
+  ) {
     inNavDrawer(coreMainActivity) {
-      clickOn(TextId(string.menu_settings))
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_SETTINGS_ITEM_TESTING_TAG).performClick()
+      })
       settingsRobo(func)
     }
   }
 
-  fun clickHelpOnSideNav(coreMainActivity: CoreMainActivity, func: HelpRobot.() -> Unit) {
+  fun clickHelpOnSideNav(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
+    func: HelpRobot.() -> Unit
+  ) {
     inNavDrawer(coreMainActivity) {
-      clickOn(TextId(string.menu_help))
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_HELP_ITEM_TESTING_TAG).performClick()
+      })
       help(func)
     }
   }
 
-  fun clickSupportKiwixOnSideNav(coreMainActivity: CoreMainActivity) {
+  fun clickSupportKiwixOnSideNav(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule,
+  ) {
     inNavDrawer(coreMainActivity) {
-      clickOn(TextId(string.menu_support_kiwix))
+      testFlakyView({
+        composeTestRule.onNodeWithTag(LEFT_DRAWER_SUPPORT_ITEM_TESTING_TAG).performClick()
+      })
     }
   }
 }

app/src/androidTest/java/org/kiwix/kiwixmobile/main/TopLevelDestinationTest.kt

@@ -126,26 +126,26 @@ class TopLevelDestinationTest : BaseActivityTest() {
           assertReceiveFileTitleVisible(composeTestRule)
         }
       }
-      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity) {
+      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertBookMarksDisplayed(composeTestRule)
         clickOnTrashIcon(composeTestRule)
         assertDeleteBookmarksDialogDisplayed(composeTestRule)
       }
-      clickHistoryOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHistoryOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertHistoryDisplayed(composeTestRule)
         clickOnTrashIcon(composeTestRule)
         assertDeleteHistoryDialogDisplayed(composeTestRule)
       }
-      clickHostBooksOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHostBooksOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertMenuWifiHotspotDisplayed(composeTestRule)
       }
-      clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertMenuSettingsDisplayed(composeTestRule)
       }
-      clickHelpOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHelpOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertToolbarDisplayed(composeTestRule)
       }
-      clickSupportKiwixOnSideNav(kiwixMainActivity as CoreMainActivity)
+      clickSupportKiwixOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule)
       pressBack()
     }
     if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N_MR1) {

app/src/androidTest/java/org/kiwix/kiwixmobile/page/bookmarks/BookmarksRobot.kt

@@ -24,20 +24,18 @@ import androidx.compose.ui.test.isDisplayed
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import androidx.compose.ui.test.junit4.ComposeTestRule
 import androidx.compose.ui.test.longClick
-import androidx.compose.ui.test.onNodeWithContentDescription
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.onNodeWithText
 import androidx.compose.ui.test.performClick
 import androidx.compose.ui.test.performScrollToNode
 import androidx.compose.ui.test.performTouchInput
-import androidx.test.espresso.Espresso.onView
-import androidx.test.espresso.action.ViewActions.click
-import androidx.test.espresso.matcher.ViewMatchers.withText
 import applyWithViewHierarchyPrinting
 import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import org.kiwix.kiwixmobile.BaseRobot
 import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_BOOKMARK_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.reader.READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.page.DELETE_MENU_ICON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.page.NO_ITEMS_TEXT_TESTING_TAG
 import org.kiwix.kiwixmobile.core.page.PAGE_LIST_TEST_TAG
@@ -47,6 +45,7 @@ import org.kiwix.kiwixmobile.core.utils.dialog.ALERT_DIALOG_CONFIRM_BUTTON_TESTI
 import org.kiwix.kiwixmobile.core.utils.dialog.ALERT_DIALOG_TITLE_TEXT_TESTING_TAG
 import org.kiwix.kiwixmobile.testutils.TestUtils
 import org.kiwix.kiwixmobile.testutils.TestUtils.TEST_PAUSE_MS
+import org.kiwix.kiwixmobile.testutils.TestUtils.TEST_PAUSE_MS_FOR_DOWNLOAD_TEST
 import org.kiwix.kiwixmobile.testutils.TestUtils.testFlakyView
 import org.kiwix.kiwixmobile.testutils.TestUtils.waitUntilTimeout
 import org.kiwix.kiwixmobile.utils.StandardActions.openDrawer
@@ -104,8 +103,11 @@ class BookmarksRobot : BaseRobot() {
 
   fun clickOnSaveBookmarkImage(composeTestRule: ComposeContentTestRule) {
     composeTestRule.apply {
-      waitUntilTimeout()
+      waitForIdle()
-      onNodeWithContentDescription(context.getString(R.string.bookmarks))
+      waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG).isDisplayed()
+      }
+      onNodeWithTag(READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG)
         .performClick()
     }
   }
@@ -115,9 +117,13 @@ class BookmarksRobot : BaseRobot() {
     timeout: Long = TEST_PAUSE_MS.toLong()
   ) {
     composeTestRule.apply {
+      waitForIdle()
       // wait for disappearing the snack-bar after removing the bookmark
       waitUntilTimeout(timeout)
-      onNodeWithContentDescription(context.getString(R.string.bookmarks))
+      waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG).isDisplayed()
+      }
+      onNodeWithTag(READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG)
         .performTouchInput {
           longClick()
         }
@@ -144,10 +150,16 @@ class BookmarksRobot : BaseRobot() {
     BaristaSleepInteractions.sleep(TestUtils.TEST_PAUSE_MS_FOR_SEARCH_TEST.toLong())
   }
 
-  fun openBookmarkScreen(coreMainActivity: CoreMainActivity) {
+  fun openBookmarkScreen(
+    coreMainActivity: CoreMainActivity,
+    composeTestRule: ComposeContentTestRule
+  ) {
     testFlakyView({
       openDrawer(coreMainActivity)
-      onView(withText(R.string.bookmarks)).perform(click())
+      composeTestRule.apply {
+        waitUntilTimeout()
+        onNodeWithTag(LEFT_DRAWER_BOOKMARK_ITEM_TESTING_TAG).performClick()
+      }
     })
   }
 

app/src/androidTest/java/org/kiwix/kiwixmobile/page/bookmarks/LibkiwixBookmarkTest.kt

@@ -33,6 +33,7 @@ import com.google.android.apps.common.testing.accessibility.framework.Accessibil
 import com.google.android.apps.common.testing.accessibility.framework.AccessibilityCheckResultUtils.matchesViews
 import com.google.android.apps.common.testing.accessibility.framework.checks.SpeakableTextPresentCheck
 import com.google.android.apps.common.testing.accessibility.framework.checks.TouchTargetSizeCheck
+import kotlinx.coroutines.runBlocking
 import org.hamcrest.Matchers.allOf
 import org.hamcrest.Matchers.anyOf
 import org.junit.Before
@@ -40,6 +41,8 @@ import org.junit.Rule
 import org.junit.Test
 import org.kiwix.kiwixmobile.BaseActivityTest
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
+import org.kiwix.kiwixmobile.core.main.reader.CoreReaderFragment
+import org.kiwix.kiwixmobile.core.page.bookmark.adapter.LibkiwixBookmarkItem
 import org.kiwix.kiwixmobile.core.utils.LanguageUtils.Companion.handleLocaleChange
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil
 import org.kiwix.kiwixmobile.core.utils.TestingUtils.COMPOSE_TEST_RULE_ORDER
@@ -51,6 +54,8 @@ import org.kiwix.kiwixmobile.testutils.TestUtils
 import org.kiwix.kiwixmobile.testutils.TestUtils.TEST_PAUSE_MS_FOR_DOWNLOAD_TEST
 import org.kiwix.kiwixmobile.testutils.TestUtils.waitUntilTimeout
 import org.kiwix.kiwixmobile.ui.KiwixDestination
+import org.kiwix.libkiwix.Book
+import org.kiwix.libkiwix.Bookmark
 import java.io.File
 import java.io.FileOutputStream
 import java.io.OutputStream
@@ -134,7 +139,7 @@ class LibkiwixBookmarkTest : BaseActivityTest() {
       pressBack()
       // Test saving bookmark
       clickOnSaveBookmarkImage(composeTestRule)
-      openBookmarkScreen(kiwixMainActivity as CoreMainActivity)
+      openBookmarkScreen(kiwixMainActivity as CoreMainActivity, composeTestRule)
       assertBookmarkSaved(composeTestRule)
       pressBack()
       // Test removing bookmark
@@ -154,7 +159,7 @@ class LibkiwixBookmarkTest : BaseActivityTest() {
       kiwixMainActivity = it
     }
     topLevel {
-      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity) {
+      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertBookmarkSaved(composeTestRule)
       }
     }
@@ -184,41 +189,39 @@ class LibkiwixBookmarkTest : BaseActivityTest() {
       pressBack()
     }
     composeTestRule.waitUntilTimeout()
-    // TODO refactor this wih compose based navController.
+    val coreReaderFragment = kiwixMainActivity.supportFragmentManager.fragments
-    // val navHostFragment: NavHostFragment =
+      .filterIsInstance<CoreReaderFragment>()
-    //   kiwixMainActivity.supportFragmentManager
+      .firstOrNull()
-    //     .findFragmentById(R.id.nav_host_fragment) as NavHostFragment
+    val libKiwixBook =
-    // val coreReaderFragment = navHostFragment.childFragmentManager.fragments[0] as CoreReaderFragment
+      Book().apply {
-    // val libKiwixBook =
+        update(coreReaderFragment?.zimReaderContainer?.zimFileReader?.jniKiwixReader)
-    //   Book().apply {
+      }
-    //     update(coreReaderFragment.zimReaderContainer?.zimFileReader?.jniKiwixReader)
+    val bookmarkList = arrayListOf<LibkiwixBookmarkItem>()
-    //   }
+    for (i in 1..500) {
-    // val bookmarkList = arrayListOf<LibkiwixBookmarkItem>()
+      val bookmark =
-    // for (i in 1..500) {
+        Bookmark().apply {
-    //   val bookmark =
+          bookId = coreReaderFragment?.zimReaderContainer?.zimFileReader?.id
-    //     Bookmark().apply {
+          title = "bookmark$i"
-    //       bookId = coreReaderFragment.zimReaderContainer?.zimFileReader?.id
+          url = "http://kiwix.org/demoBookmark$i"
-    //       title = "bookmark$i"
+          bookTitle = libKiwixBook.title
-    //       url = "http://kiwix.org/demoBookmark$i"
+        }
-    //       bookTitle = libKiwixBook.title
+      val libkiwixItem =
-    //     }
+        LibkiwixBookmarkItem(
-    //   val libkiwixItem =
+          bookmark,
-    //     LibkiwixBookmarkItem(
+          coreReaderFragment?.zimReaderContainer?.zimFileReader?.favicon,
-    //       bookmark,
+          coreReaderFragment?.zimReaderContainer?.zimFileReader?.zimReaderSource
-    //       coreReaderFragment.zimReaderContainer?.zimFileReader?.favicon,
+        )
-    //       coreReaderFragment.zimReaderContainer?.zimFileReader?.zimReaderSource
+      runBlocking {
-    //     )
+        coreReaderFragment?.libkiwixBookmarks?.saveBookmark(libkiwixItem).also {
-    //   runBlocking {
+          bookmarkList.add(libkiwixItem)
-    //     coreReaderFragment.libkiwixBookmarks?.saveBookmark(libkiwixItem).also {
+        }
-    //       bookmarkList.add(libkiwixItem)
+      }
-    //     }
+    }
-    //   }
+    bookmarks {
-    // }
+      // test all the saved bookmarks are showing on the bookmarks screen
-    // bookmarks {
+      openBookmarkScreen(kiwixMainActivity as CoreMainActivity, composeTestRule)
-    //   // test all the saved bookmarks are showing on the bookmarks screen
+      testAllBookmarkShowing(bookmarkList, composeTestRule)
-    //   openBookmarkScreen()
+    }
-    //   testAllBookmarkShowing(bookmarkList, composeTestRule)
-    // }
   }
 
   private fun getZimFile(): File {

app/src/androidTest/java/org/kiwix/kiwixmobile/page/history/NavigationHistoryRobot.kt

@@ -19,9 +19,9 @@ package org.kiwix.kiwixmobile.page.history
 
 import android.util.Log
 import androidx.compose.ui.test.assertTextEquals
+import androidx.compose.ui.test.isDisplayed
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import androidx.compose.ui.test.longClick
-import androidx.compose.ui.test.onNodeWithContentDescription
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.performClick
 import androidx.compose.ui.test.performTouchInput
@@ -34,6 +34,8 @@ import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import junit.framework.AssertionFailedError
 import org.kiwix.kiwixmobile.BaseRobot
 import org.kiwix.kiwixmobile.core.R
+import org.kiwix.kiwixmobile.core.main.reader.READER_BOTTOM_BAR_NEXT_SCREEN_BUTTON_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.reader.READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.main.reader.READER_SCREEN_TESTING_TAG
 import org.kiwix.kiwixmobile.core.main.reader.TAB_SWITCHER_VIEW_TESTING_TAG
 import org.kiwix.kiwixmobile.core.page.DELETE_MENU_ICON_TESTING_TAG
@@ -41,6 +43,7 @@ import org.kiwix.kiwixmobile.core.ui.components.TOOLBAR_TITLE_TESTING_TAG
 import org.kiwix.kiwixmobile.core.utils.dialog.ALERT_DIALOG_TITLE_TEXT_TESTING_TAG
 import org.kiwix.kiwixmobile.main.BOTTOM_NAV_READER_ITEM_TESTING_TAG
 import org.kiwix.kiwixmobile.testutils.TestUtils
+import org.kiwix.kiwixmobile.testutils.TestUtils.TEST_PAUSE_MS_FOR_DOWNLOAD_TEST
 import org.kiwix.kiwixmobile.testutils.TestUtils.testFlakyView
 import org.kiwix.kiwixmobile.testutils.TestUtils.waitUntilTimeout
 
@@ -99,9 +102,12 @@ class NavigationHistoryRobot : BaseRobot() {
 
   fun longClickOnBackwardButton(composeTestRule: ComposeContentTestRule) {
     composeTestRule.apply {
-      waitUntilTimeout()
+      waitForIdle()
+      waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG).isDisplayed()
+      }
       testFlakyView({
-        onNodeWithContentDescription(context.getString(R.string.go_to_previous_page))
+        onNodeWithTag(READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG)
           .performTouchInput { longClick() }
       })
     }
@@ -109,9 +115,12 @@ class NavigationHistoryRobot : BaseRobot() {
 
   fun longClickOnForwardButton(composeTestRule: ComposeContentTestRule) {
     composeTestRule.apply {
-      waitUntilTimeout()
+      waitForIdle()
+      waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_NEXT_SCREEN_BUTTON_TESTING_TAG).isDisplayed()
+      }
       testFlakyView({
-        onNodeWithContentDescription(context.getString(R.string.go_to_next_page))
+        onNodeWithTag(READER_BOTTOM_BAR_NEXT_SCREEN_BUTTON_TESTING_TAG)
           .performTouchInput { longClick() }
       })
     }
@@ -135,8 +144,11 @@ class NavigationHistoryRobot : BaseRobot() {
 
   fun clickOnBackwardButton(composeTestRule: ComposeContentTestRule) {
     composeTestRule.apply {
-      waitUntilTimeout()
+      waitForIdle()
-      onNodeWithContentDescription(context.getString(R.string.go_to_previous_page))
+      waitUntil(TEST_PAUSE_MS_FOR_DOWNLOAD_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG).isDisplayed()
+      }
+      onNodeWithTag(READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG)
         .performClick()
     }
   }

app/src/androidTest/java/org/kiwix/kiwixmobile/shortcuts/GetContentShortcutTest.kt

@@ -142,26 +142,26 @@ class GetContentShortcutTest {
           assertReceiveFileTitleVisible(composeTestRule)
         }
       }
-      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity) {
+      clickBookmarksOnNavDrawer(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertBookMarksDisplayed(composeTestRule)
         clickOnTrashIcon(composeTestRule)
         assertDeleteBookmarksDialogDisplayed(composeTestRule)
       }
-      clickHistoryOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHistoryOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertHistoryDisplayed(composeTestRule)
         clickOnTrashIcon(composeTestRule)
         assertDeleteHistoryDialogDisplayed(composeTestRule)
       }
-      clickHostBooksOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHostBooksOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertMenuWifiHotspotDisplayed(composeTestRule)
       }
-      clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickSettingsOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         assertMenuSettingsDisplayed(composeTestRule)
       }
-      clickHelpOnSideNav(kiwixMainActivity as CoreMainActivity) {
+      clickHelpOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule) {
         HelpRobot().assertToolbarDisplayed(composeTestRule)
       }
-      clickSupportKiwixOnSideNav(kiwixMainActivity as CoreMainActivity)
+      clickSupportKiwixOnSideNav(kiwixMainActivity as CoreMainActivity, composeTestRule)
       pressBack()
     }
   }

app/src/androidTest/java/org/kiwix/kiwixmobile/utils/StandardActions.kt

@@ -24,7 +24,6 @@ import androidx.test.espresso.Espresso
 import androidx.test.espresso.action.ViewActions
 import androidx.test.espresso.matcher.ViewMatchers
 import com.adevinta.android.barista.interaction.BaristaDialogInteractions
-import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
 import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_SETTINGS_ITEM_TESTING_TAG
 import org.kiwix.kiwixmobile.core.utils.files.Log
@@ -43,12 +42,10 @@ object StandardActions {
   }
 
   fun openDrawer(coreMainActivity: CoreMainActivity) {
-    BaristaSleepInteractions.sleep(TestUtils.TEST_PAUSE_MS.toLong())
     coreMainActivity.openNavigationDrawer()
   }
 
   fun closeDrawer(coreMainActivity: CoreMainActivity) {
-    BaristaSleepInteractions.sleep(TestUtils.TEST_PAUSE_MS.toLong())
     coreMainActivity.closeNavigationDrawer()
   }
 

app/src/main/java/org/kiwix/kiwixmobile/ui/KiwixNavGraph.kt

@@ -20,7 +20,6 @@ package org.kiwix.kiwixmobile.ui
 
 import android.net.Uri
 import android.os.Bundle
-import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -40,6 +39,7 @@ import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.navArgument
 import androidx.navigation.navDeepLink
+import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.main.BOOKMARK_FRAGMENT
 import org.kiwix.kiwixmobile.core.main.DOWNLOAD_FRAGMENT
 import org.kiwix.kiwixmobile.core.main.FIND_IN_PAGE_SEARCH_STRING
@@ -121,7 +121,7 @@ fun KiwixNavGraph(
       val shouldOpenInNewTab = backStackEntry.arguments?.getBoolean(SHOULD_OPEN_IN_NEW_TAB) ?: false
       val searchItemTitle = backStackEntry.arguments?.getString(SEARCH_ITEM_TITLE_KEY).orEmpty()
 
-      FragmentContainer {
+      FragmentContainer(R.id.readerFragmentContainer) {
         KiwixReaderFragment().apply {
           arguments = Bundle().apply {
             putString(ZIM_FILE_URI_KEY, zimFileUri)
@@ -144,7 +144,7 @@ fun KiwixNavGraph(
     ) { backStackEntry ->
       val zimFileUri = backStackEntry.arguments?.getString(ZIM_FILE_URI_KEY).orEmpty()
 
-      FragmentContainer {
+      FragmentContainer(R.id.localLibraryFragmentContainer) {
         LocalLibraryFragment().apply {
           arguments = Bundle().apply {
             putString(ZIM_FILE_URI_KEY, zimFileUri)
@@ -153,32 +153,32 @@ fun KiwixNavGraph(
       }
     }
     composable(KiwixDestination.Downloads.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.downloadFragmentContainer) {
         OnlineLibraryFragment()
       }
     }
     composable(KiwixDestination.Bookmarks.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.bookmarksFragmentContainer) {
         BookmarksFragment()
       }
     }
     composable(KiwixDestination.Notes.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.notesFragmentContainer) {
         NotesFragment()
       }
     }
     composable(KiwixDestination.Intro.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.introFragmentContainer) {
         IntroFragment()
       }
     }
     composable(KiwixDestination.History.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.historyFragmentContainer) {
         HistoryFragment()
       }
     }
     composable(KiwixDestination.Language.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.languageFragmentContainer) {
         LanguageFragment()
       }
     }
@@ -186,17 +186,17 @@ fun KiwixNavGraph(
       KiwixDestination.ZimHost.route,
       deepLinks = listOf(navDeepLink { uriPattern = ZIM_HOST_NAV_DEEP_LINK })
     ) {
-      FragmentContainer {
+      FragmentContainer(R.id.zimHostFragmentContainer) {
         ZimHostFragment()
       }
     }
     composable(KiwixDestination.Help.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.helpFragmentContainer) {
         KiwixHelpFragment()
       }
     }
     composable(KiwixDestination.Settings.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.settingsFragmentContainer) {
         KiwixSettingsFragment()
       }
     }
@@ -221,7 +221,7 @@ fun KiwixNavGraph(
       val isOpenedFromTabSwitcher =
         backStackEntry.arguments?.getBoolean(TAG_FROM_TAB_SWITCHER) ?: false
       val isVoice = backStackEntry.arguments?.getBoolean(EXTRA_IS_WIDGET_VOICE) ?: false
-      FragmentContainer {
+      FragmentContainer(R.id.searchFragmentContainer) {
         SearchFragment().apply {
           arguments = Bundle().apply {
             putString(NAV_ARG_SEARCH_STRING, searchString)
@@ -247,7 +247,7 @@ fun KiwixNavGraph(
           Uri.decode(it).toUri()
         }
 
-      FragmentContainer {
+      FragmentContainer(R.id.localFileTransferFragmentContainer) {
         LocalFileTransferFragment().apply {
           arguments = Bundle().apply {
             putParcelableArray(
@@ -264,24 +264,23 @@ fun KiwixNavGraph(
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun FragmentContainer(
+  fragmentId: Int,
   fragmentProvider: () -> Fragment
 ) {
   val context = LocalContext.current
   val fragmentManager = remember {
     (context as AppCompatActivity).supportFragmentManager
   }
-  val viewId = remember { View.generateViewId() }
+  val fragment = remember { fragmentProvider() }
 
   AndroidView(
     modifier = Modifier.fillMaxSize(),
     factory = { ctx ->
       FragmentContainerView(ctx).apply {
-        id = viewId
+        id = fragmentId
         doOnAttach {
           fragmentManager.commit {
-            if (fragmentManager.findFragmentById(viewId) == null) {
+            replace(fragmentId, fragment)
-              add(viewId, fragmentProvider())
-            }
           }
         }
       }

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreMainActivity.kt

@@ -89,8 +89,12 @@ const val HELP_FRAGMENT = "helpFragment"
 const val SETTINGS_FRAGMENT = "settingsFragment"
 const val SEARCH_FRAGMENT = "searchFragment"
 const val LOCAL_FILE_TRANSFER_FRAGMENT = "localFileTransferFragment"
+
+// Zim host deep link for opening the ZimHost fragment from notification.
 const val ZIM_HOST_DEEP_LINK_SCHEME = "kiwix"
 const val ZIM_HOST_NAV_DEEP_LINK = "$ZIM_HOST_DEEP_LINK_SCHEME://zimhost"
+
+// Left drawer items testing tag.
 const val LEFT_DRAWER_BOOKMARK_ITEM_TESTING_TAG = "leftDrawerBookmarkItemTestingTag"
 const val LEFT_DRAWER_HISTORY_ITEM_TESTING_TAG = "leftDrawerHistoryItemTestingTag"
 const val LEFT_DRAWER_NOTES_ITEM_TESTING_TAG = "leftDrawerNotesItemTestingTag"

core/src/main/java/org/kiwix/kiwixmobile/core/main/MainDrawerMenu.kt

@@ -35,6 +35,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.semantics.testTag
 import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.ui.components.ONE
 import org.kiwix.kiwixmobile.core.ui.models.IconItem
@@ -105,5 +107,6 @@ private fun DrawerMenuItemView(item: DrawerMenuItem) {
     modifier = Modifier
       .fillMaxWidth()
       .clickable { item.onClick.invoke() }
+      .semantics { testTag = item.testingTag }
   )
 }

core/src/main/java/org/kiwix/kiwixmobile/core/main/reader/ReaderScreen.kt

@@ -167,6 +167,14 @@ const val TAB_SWITCHER_VIEW_TESTING_TAG = "tabSwitcherViewTestingTag"
 const val READER_SCREEN_TESTING_TAG = "readerScreenTestingTag"
 const val CLOSE_ALL_TABS_BUTTON_TESTING_TAG = "closeAllTabsButtonTestingTag"
 const val TAB_TITLE_TESTING_TAG = "tabTitleTestingTag"
+const val READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG = "readerBottomBarBookmarkButtonTestingTag"
+const val READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG =
+  "readerBottomBarPreviousScreenButtonTestingTag"
+const val READER_BOTTOM_BAR_NEXT_SCREEN_BUTTON_TESTING_TAG =
+  "readerBottomBarNextScreenButtonTestingTag"
+const val READER_BOTTOM_BAR_HOME_BUTTON_TESTING_TAG = "readerBottomBarHomeButtonTestingTag"
+const val READER_BOTTOM_BAR_TABLE_CONTENT_BUTTON_TESTING_TAG =
+  "readerBottomBarTableContentButtonTestingTag"
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Suppress("ComposableLambdaParameterNaming", "LongMethod")
@@ -666,7 +674,8 @@ private fun BottomAppBarOfReaderScreen(
         onClick = bookmarkButtonItem.first,
         onLongClick = bookmarkButtonItem.second,
         buttonIcon = bookmarkButtonItem.third,
-        contentDescription = stringResource(R.string.bookmarks)
+        contentDescription = stringResource(R.string.bookmarks),
+        testingTag = READER_BOTTOM_BAR_BOOKMARK_BUTTON_TESTING_TAG
       )
       // Back Icon(for going to previous page)
       BottomAppBarButtonIcon(
@@ -674,13 +683,15 @@ private fun BottomAppBarOfReaderScreen(
         onLongClick = previousPageButtonItem.second,
         buttonIcon = Drawable(R.drawable.ic_keyboard_arrow_left_24dp),
         shouldEnable = previousPageButtonItem.third,
-        contentDescription = stringResource(R.string.go_to_previous_page)
+        contentDescription = stringResource(R.string.go_to_previous_page),
+        testingTag = READER_BOTTOM_BAR_PREVIOUS_SCREEN_BUTTON_TESTING_TAG
       )
       // Home Icon(to open the home page of ZIM file)
       BottomAppBarButtonIcon(
         onClick = onHomeButtonClick,
         buttonIcon = Drawable(R.drawable.action_home),
-        contentDescription = stringResource(R.string.menu_home)
+        contentDescription = stringResource(R.string.menu_home),
+        testingTag = READER_BOTTOM_BAR_HOME_BUTTON_TESTING_TAG
       )
       // Forward Icon(for going to next page)
       BottomAppBarButtonIcon(
@@ -688,14 +699,16 @@ private fun BottomAppBarOfReaderScreen(
         onLongClick = nextPageButtonItem.second,
         buttonIcon = Drawable(R.drawable.ic_keyboard_arrow_right_24dp),
         shouldEnable = nextPageButtonItem.third,
-        contentDescription = stringResource(R.string.go_to_next_page)
+        contentDescription = stringResource(R.string.go_to_next_page),
+        testingTag = READER_BOTTOM_BAR_NEXT_SCREEN_BUTTON_TESTING_TAG
       )
       // Toggle Icon(to open the table of content in right side bar)
       BottomAppBarButtonIcon(
         shouldEnable = tocButtonItem.first,
         onClick = tocButtonItem.second,
         buttonIcon = Drawable(R.drawable.ic_toc_24dp),
-        contentDescription = stringResource(R.string.table_of_contents)
+        contentDescription = stringResource(R.string.table_of_contents),
+        testingTag = READER_BOTTOM_BAR_TABLE_CONTENT_BUTTON_TESTING_TAG
       )
     }
   }
@@ -707,7 +720,8 @@ private fun BottomAppBarButtonIcon(
   onLongClick: (() -> Unit)? = null,
   buttonIcon: IconItem,
   shouldEnable: Boolean = true,
-  contentDescription: String
+  contentDescription: String,
+  testingTag: String
 ) {
   Box(
     modifier = Modifier
@@ -717,7 +731,7 @@ private fun BottomAppBarButtonIcon(
         onClick = onClick,
         onLongClick = onLongClick,
         enabled = shouldEnable
-      ),
+      ).testTag(testingTag),
     contentAlignment = Alignment.Center
   ) {
     Icon(

core/src/main/res/values/ids.xml

@@ -1,8 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-  <item name="tabsAdapterContentImageView" type="id" />
+  <item type="id" name="readerFragmentContainer" />
-  <item name="tabsAdapterCloseImageView" type="id" />
+  <item type="id" name="localLibraryFragmentContainer" />
-  <item name="tabsAdapterCardView" type="id" />
+  <item type="id" name="bookmarksFragmentContainer" />
-  <item name="tabsAdapterTextView" type="id" />
+  <item type="id" name="downloadFragmentContainer" />
-  <item name="nav_host_fragment" type="id" />
+  <item type="id" name="notesFragmentContainer" />
+  <item type="id" name="introFragmentContainer" />
+  <item type="id" name="historyFragmentContainer" />
+  <item type="id" name="languageFragmentContainer" />
+  <item type="id" name="zimHostFragmentContainer" />
+  <item type="id" name="helpFragmentContainer" />
+  <item type="id" name="settingsFragmentContainer" />
+  <item type="id" name="searchFragmentContainer" />
+  <item type="id" name="localFileTransferFragmentContainer" />
 </resources>

custom/src/androidTest/java/org/kiwix/kiwixmobile/custom/search/SearchFragmentTestForCustomApp.kt

@@ -24,7 +24,6 @@ import android.content.res.AssetFileDescriptor
 import androidx.compose.ui.test.junit4.createComposeRule
 import androidx.core.content.edit
 import androidx.lifecycle.Lifecycle
-import androidx.navigation.fragment.NavHostFragment
 import androidx.preference.PreferenceManager
 import androidx.test.core.app.ActivityScenario
 import androidx.test.espresso.Espresso.pressBack
@@ -48,6 +47,7 @@ import org.kiwix.kiwixmobile.core.di.modules.CALL_TIMEOUT
 import org.kiwix.kiwixmobile.core.di.modules.CONNECTION_TIMEOUT
 import org.kiwix.kiwixmobile.core.di.modules.READ_TIMEOUT
 import org.kiwix.kiwixmobile.core.di.modules.USER_AGENT
+import org.kiwix.kiwixmobile.core.main.CoreMainActivity
 import org.kiwix.kiwixmobile.core.reader.ZimReaderSource
 import org.kiwix.kiwixmobile.core.search.SearchFragment
 import org.kiwix.kiwixmobile.core.search.viewmodel.Action
@@ -236,34 +236,31 @@ class SearchFragmentTestForCustomApp {
       openSearchWithQuery(searchTerms[0])
       // wait for searchFragment become visible on screen.
       delay(2000)
-      val navHostFragment: NavHostFragment =
+      val searchFragment = customMainActivity.supportFragmentManager.fragments
-        customMainActivity.supportFragmentManager
+        .filterIsInstance<SearchFragment>()
-          .findFragmentById(
+        .firstOrNull()
-            customMainActivity.activityCustomMainBinding.customNavController.id
-          ) as NavHostFragment
-      val searchFragment = navHostFragment.childFragmentManager.fragments[0] as SearchFragment
       for (i in 1..100) {
         // This will execute the render method 100 times frequently.
         val searchTerm = searchTerms[i % searchTerms.size]
-        searchFragment.searchViewModel.actions.trySend(Action.Filter(searchTerm)).isSuccess
+        searchFragment?.searchViewModel?.actions?.trySend(Action.Filter(searchTerm))?.isSuccess
       }
       for (i in 1..100) {
         // this will execute the render method 100 times with 100MS delay.
         delay(100)
         val searchTerm = searchTerms[i % searchTerms.size]
-        searchFragment.searchViewModel.actions.trySend(Action.Filter(searchTerm)).isSuccess
+        searchFragment?.searchViewModel?.actions?.trySend(Action.Filter(searchTerm))?.isSuccess
       }
       for (i in 1..100) {
         // this will execute the render method 100 times with 200MS delay.
         delay(200)
         val searchTerm = searchTerms[i % searchTerms.size]
-        searchFragment.searchViewModel.actions.trySend(Action.Filter(searchTerm)).isSuccess
+        searchFragment?.searchViewModel?.actions?.trySend(Action.Filter(searchTerm))?.isSuccess
       }
       for (i in 1..100) {
         // this will execute the render method 100 times with 200MS delay.
         delay(300)
         val searchTerm = searchTerms[i % searchTerms.size]
-        searchFragment.searchViewModel.actions.trySend(Action.Filter(searchTerm)).isSuccess
+        searchFragment?.searchViewModel?.actions?.trySend(Action.Filter(searchTerm))?.isSuccess
       }
     }
 
@@ -293,12 +290,12 @@ class SearchFragmentTestForCustomApp {
     openZimFileInReader(zimFile = downloadingZimFile)
     search {
       // click on home button to load the main page of ZIM file.
-      clickOnHomeButton(composeTestRule, customMainActivity)
+      clickOnHomeButton(composeTestRule)
       // click on an article to load the other page.
       clickOnAFoolForYouArticle()
       assertAFoolForYouArticleLoaded()
       // open note screen.
-      openNoteFragment()
+      openNoteFragment(customMainActivity as CoreMainActivity, composeTestRule)
       pressBack()
       // after came back check the previously loaded article is still showing or not.
       assertAFoolForYouArticleLoaded()
@@ -316,21 +313,18 @@ class SearchFragmentTestForCustomApp {
     zimFile: File? = null
   ) {
     UiThreadStatement.runOnUiThread {
-      val navHostFragment: NavHostFragment =
-        customMainActivity.supportFragmentManager
-          .findFragmentById(
-            customMainActivity.activityCustomMainBinding.customNavController.id
-          ) as NavHostFragment
       val customReaderFragment =
-        navHostFragment.childFragmentManager.fragments[0] as CustomReaderFragment
+        customMainActivity.supportFragmentManager.fragments
+          .filterIsInstance<CustomReaderFragment>()
+          .firstOrNull()
       runBlocking {
         assetFileDescriptor?.let {
-          customReaderFragment.openZimFile(
+          customReaderFragment?.openZimFile(
             ZimReaderSource(assetFileDescriptorList = listOf(assetFileDescriptor)),
             true
           )
         } ?: run {
-          customReaderFragment.openZimFile(
+          customReaderFragment?.openZimFile(
             ZimReaderSource(zimFile),
             true
           )

custom/src/androidTest/java/org/kiwix/kiwixmobile/custom/search/SearchRobot.kt

@@ -21,17 +21,13 @@ package org.kiwix.kiwixmobile.custom.search
 import android.view.KeyEvent
 import androidx.compose.ui.test.assert
 import androidx.compose.ui.test.hasText
+import androidx.compose.ui.test.isDisplayed
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import androidx.compose.ui.test.onAllNodesWithTag
-import androidx.compose.ui.test.onNodeWithContentDescription
 import androidx.compose.ui.test.onNodeWithTag
 import androidx.compose.ui.test.performClick
 import androidx.compose.ui.test.performTextClearance
 import androidx.compose.ui.test.performTextInput
-import androidx.core.view.GravityCompat
-import androidx.test.espresso.Espresso.onView
-import androidx.test.espresso.action.ViewActions.click
-import androidx.test.espresso.matcher.ViewMatchers.withText
 import androidx.test.espresso.web.assertion.WebViewAssertions.webMatches
 import androidx.test.espresso.web.sugar.Web
 import androidx.test.espresso.web.sugar.Web.onWebView
@@ -41,17 +37,17 @@ import androidx.test.espresso.web.webdriver.DriverAtoms.getText
 import androidx.test.espresso.web.webdriver.DriverAtoms.webClick
 import androidx.test.espresso.web.webdriver.Locator
 import androidx.test.uiautomator.UiDevice
-import com.adevinta.android.barista.interaction.BaristaDrawerInteractions.openDrawerWithGravity
 import com.adevinta.android.barista.interaction.BaristaSleepInteractions
 import org.hamcrest.CoreMatchers.containsString
-import org.kiwix.kiwixmobile.core.R
+import org.kiwix.kiwixmobile.core.main.CoreMainActivity
+import org.kiwix.kiwixmobile.core.main.LEFT_DRAWER_NOTES_ITEM_TESTING_TAG
+import org.kiwix.kiwixmobile.core.main.reader.READER_BOTTOM_BAR_HOME_BUTTON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.page.SEARCH_ICON_TESTING_TAG
 import org.kiwix.kiwixmobile.core.search.SEARCH_FIELD_TESTING_TAG
 import org.kiwix.kiwixmobile.core.search.SEARCH_ITEM_TESTING_TAG
-import org.kiwix.kiwixmobile.custom.R.id
-import org.kiwix.kiwixmobile.custom.main.CustomMainActivity
 import org.kiwix.kiwixmobile.custom.testutils.TestUtils
 import org.kiwix.kiwixmobile.custom.testutils.TestUtils.TEST_PAUSE_MS
+import org.kiwix.kiwixmobile.custom.testutils.TestUtils.TEST_PAUSE_MS_FOR_SEARCH_TEST
 import org.kiwix.kiwixmobile.custom.testutils.TestUtils.testFlakyView
 import org.kiwix.kiwixmobile.custom.testutils.TestUtils.waitUntilTimeout
 
@@ -146,12 +142,13 @@ class SearchRobot {
     })
   }
 
-  fun clickOnHomeButton(
+  fun clickOnHomeButton(composeTestRule: ComposeContentTestRule) {
-    composeTestRule: ComposeContentTestRule,
-    customMainActivity: CustomMainActivity
-  ) {
     composeTestRule.apply {
-      onNodeWithContentDescription(customMainActivity.getString(R.string.menu_home))
+      waitForIdle()
+      waitUntil(TEST_PAUSE_MS_FOR_SEARCH_TEST.toLong()) {
+        onNodeWithTag(READER_BOTTOM_BAR_HOME_BUTTON_TESTING_TAG).isDisplayed()
+      }
+      onNodeWithTag(READER_BOTTOM_BAR_HOME_BUTTON_TESTING_TAG)
         .performClick()
     }
   }
@@ -182,9 +179,16 @@ class SearchRobot {
     })
   }
 
-  fun openNoteFragment() {
+  fun openNoteFragment(
-    BaristaSleepInteractions.sleep(TestUtils.TEST_PAUSE_MS.toLong())
+    coreMainActivity: CoreMainActivity,
-    openDrawerWithGravity(id.custom_drawer_container, GravityCompat.START)
+    composeTestRule: ComposeContentTestRule
-    testFlakyView({ onView(withText(R.string.pref_notes)).perform(click()) })
+  ) {
+    coreMainActivity.openNavigationDrawer()
+    testFlakyView({
+      composeTestRule.apply {
+        waitUntilTimeout()
+        onNodeWithTag(LEFT_DRAWER_NOTES_ITEM_TESTING_TAG).performClick()
+      }
+    })
   }
 }

custom/src/androidTest/java/org/kiwix/kiwixmobile/custom/testutils/TestUtils.kt

@@ -33,7 +33,7 @@ import java.util.TimerTask
 
 object TestUtils {
   private const val TAG = "TESTUTILS"
-  const val TEST_PAUSE_MS_FOR_SEARCH_TEST = 1000
+  const val TEST_PAUSE_MS_FOR_SEARCH_TEST = 10000
   const val TEST_PAUSE_MS = 3000
 
   @JvmStatic

custom/src/main/java/org/kiwix/kiwixmobile/custom/main/CustomNavGraph.kt

@@ -20,7 +20,6 @@ package org.kiwix.kiwixmobile.custom.main
 
 import android.net.Uri
 import android.os.Bundle
-import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -38,6 +37,7 @@ import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.navArgument
+import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.main.BOOKMARK_FRAGMENT
 import org.kiwix.kiwixmobile.core.main.DOWNLOAD_FRAGMENT
 import org.kiwix.kiwixmobile.core.main.FIND_IN_PAGE_SEARCH_STRING
@@ -95,7 +95,7 @@ fun CustomNavGraph(
       val pageUrl = backStackEntry.arguments?.getString(PAGE_URL_KEY).orEmpty()
       val shouldOpenInNewTab = backStackEntry.arguments?.getBoolean(SHOULD_OPEN_IN_NEW_TAB) ?: false
 
-      FragmentContainer {
+      FragmentContainer(R.id.readerFragmentContainer) {
         CustomReaderFragment().apply {
           arguments = Bundle().apply {
             putString(FIND_IN_PAGE_SEARCH_STRING, findInPageSearchString)
@@ -106,32 +106,32 @@ fun CustomNavGraph(
       }
     }
     composable(CustomDestination.History.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.historyFragmentContainer) {
         HistoryFragment()
       }
     }
     composable(CustomDestination.Notes.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.notesFragmentContainer) {
         NotesFragment()
       }
     }
     composable(CustomDestination.Bookmarks.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.bookmarksFragmentContainer) {
         BookmarksFragment()
       }
     }
     composable(CustomDestination.Help.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.helpFragmentContainer) {
         CustomHelpFragment()
       }
     }
     composable(CustomDestination.Settings.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.settingsFragmentContainer) {
         CustomSettingsFragment()
       }
     }
     composable(CustomDestination.Downloads.route) {
-      FragmentContainer {
+      FragmentContainer(R.id.downloadFragmentContainer) {
         CustomDownloadFragment()
       }
     }
@@ -156,7 +156,7 @@ fun CustomNavGraph(
       val isOpenedFromTabSwitcher =
         backStackEntry.arguments?.getBoolean(TAG_FROM_TAB_SWITCHER) ?: false
       val isVoice = backStackEntry.arguments?.getBoolean(EXTRA_IS_WIDGET_VOICE) ?: false
-      FragmentContainer {
+      FragmentContainer(R.id.searchFragmentContainer) {
         SearchFragment().apply {
           arguments = Bundle().apply {
             putString(NAV_ARG_SEARCH_STRING, searchString)
@@ -172,24 +172,23 @@ fun CustomNavGraph(
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun FragmentContainer(
+  fragmentId: Int,
   fragmentProvider: () -> Fragment
 ) {
   val context = LocalContext.current
   val fragmentManager = remember {
     (context as AppCompatActivity).supportFragmentManager
   }
-  val viewId = remember { View.generateViewId() }
+  val fragment = remember { fragmentProvider() }
 
   AndroidView(
     modifier = Modifier.fillMaxSize(),
     factory = { ctx ->
       FragmentContainerView(ctx).apply {
-        id = viewId
+        id = fragmentId
         doOnAttach {
           fragmentManager.commit {
-            if (fragmentManager.findFragmentById(viewId) == null) {
+            replace(fragmentId, fragment)
-              add(viewId, fragmentProvider())
-            }
           }
         }
       }