For #12895 Fix Intermittent test navigateBookmarksFoldersTest

app/src/androidTest/java/org/mozilla/fenix/ui/BookmarksTest.kt

@@ -494,12 +494,16 @@ class BookmarksTest {
         }.openBookmarks {
             createFolder("1")
             getInstrumentation().waitForIdleSync()
+            waitForBookmarksFolderContentToExist("Bookmarks", "1")
             selectFolder("1")
+            verifyCurrentFolderTitle("1")
             createFolder("2")
             getInstrumentation().waitForIdleSync()
+            waitForBookmarksFolderContentToExist("1", "2")
             selectFolder("2")
             verifyCurrentFolderTitle("2")
             navigateUp()
+            waitForBookmarksFolderContentToExist("1", "2")
             verifyCurrentFolderTitle("1")
             mDevice.pressBack()
             verifyBookmarksMenuView()

app/src/androidTest/java/org/mozilla/fenix/ui/robots/BookmarksRobot.kt

@@ -105,6 +105,10 @@ class BookmarksRobot {
     fun verifySelectDefaultFolderSnackBarText() = assertSnackBarText("Can’t edit default folders")
 
     fun verifyCurrentFolderTitle(title: String) {
+        mDevice.findObject(UiSelector().resourceId("$packageName:id/navigationToolbar")
+            .textContains(title))
+            .waitForExists(waitingTime)
+
         onView(
             allOf(
                 withText(title),
@@ -114,6 +118,14 @@ class BookmarksRobot {
             .check(matches(isDisplayed()))
     }
 
+    fun waitForBookmarksFolderContentToExist(parentFolderName: String, childFolderName: String) {
+        mDevice.findObject(UiSelector().resourceId("$packageName:id/navigationToolbar")
+            .textContains(parentFolderName))
+            .waitForExists(waitingTime)
+
+        mDevice.waitNotNull(Until.findObject(By.text(childFolderName)), waitingTime)
+    }
+
     fun verifySignInToSyncButton() =
         signInToSyncButton().check(matches(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE)))