Refactored and added new unit test cases.

app/src/main/java/org/kiwix/kiwixmobile/nav/destination/library/CopyMoveFileHandler.kt

@@ -82,7 +82,7 @@ class CopyMoveFileHandler @Inject constructor(
   var shouldValidateZimFile: Boolean = false
   private var fileSystemDisposable: Disposable? = null
   private lateinit var fragmentManager: FragmentManager
-  private val storageDeviceList by lazy {
+  val storageDeviceList by lazy {
     StorageDeviceUtils.getWritableStorage(activity)
   }
 
@@ -141,7 +141,7 @@ class CopyMoveFileHandler @Inject constructor(
     lifecycleScope = coroutineScope
   }
 
-  private fun showStorageSelectDialog() = StorageSelectDialog()
+  fun showStorageSelectDialog() = StorageSelectDialog()
     .apply {
       onSelectAction = ::copyMoveZIMFileInSelectedStorage
       titleSize = STORAGE_SELECT_STORAGE_TITLE_TEXTVIEW_SIZE
@@ -167,7 +167,7 @@ class CopyMoveFileHandler @Inject constructor(
     }
   }
 
-  fun performCopyMoveOperation() {
+  private fun performCopyMoveOperation() {
     if (isMoveOperation) {
       performMoveOperation()
     } else {
@@ -233,7 +233,7 @@ class CopyMoveFileHandler @Inject constructor(
       }
   }
 
-  private fun performCopyMoveOperationIfSufficientSpaceAvailable() {
+  fun performCopyMoveOperationIfSufficientSpaceAvailable() {
     val availableSpace = storageCalculator.availableBytes(File(sharedPreferenceUtil.prefStorage))
     if (hasNotSufficientStorageSpace(availableSpace)) {
       fileCopyMoveCallback?.insufficientSpaceInStorage(availableSpace)

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

@@ -126,7 +126,7 @@ class CopyMoveFileHandlerTest {
   @Test
   fun validateZimFileCanCopyOrMoveShouldReturnFalseWhenDetectingFileSystem() {
     every { fileHandler.isBookLessThan4GB() } returns true
-    every { fileHandler.performCopyMoveOperation() } just Runs
+    every { fileHandler.performCopyMoveOperationIfSufficientSpaceAvailable() } just Runs
     prepareFileSystemAndFileForMockk(fileSystemState = DetectingFileSystem)
 
     val result = fileHandler.validateZimFileCanCopyOrMove(storageFile)
@@ -151,15 +151,15 @@ class CopyMoveFileHandlerTest {
   }
 
   @Test
-  fun handleDetectingFileSystemStateShouldShowCopyMoveDialogIfBookLessThan4GB() {
+  fun handleDetectingFileSystemStateShouldPerformCopyMoveOperationIfBookLessThan4GB() {
     fileHandler = spyk(fileHandler)
     prepareFileSystemAndFileForMockk()
     every { fileHandler.isBookLessThan4GB() } returns true
-    every { fileHandler.showCopyMoveDialog() } just Runs
+    every { fileHandler.performCopyMoveOperationIfSufficientSpaceAvailable() } just Runs
 
     fileHandler.handleDetectingFileSystemState()
 
-    verify { fileHandler.showCopyMoveDialog() }
+    verify { fileHandler.performCopyMoveOperationIfSufficientSpaceAvailable() }
   }
 
   @Test
@@ -174,15 +174,15 @@ class CopyMoveFileHandlerTest {
   }
 
   @Test
-  fun handleCannotWrite4GbFileStateShouldShowCopyMoveDialogIfBookLessThan4GB() {
+  fun handleCannotWrite4GbFileStateShouldPerformCopyMoveOperationIfBookLessThan4GB() {
     fileHandler = spyk(fileHandler)
     prepareFileSystemAndFileForMockk()
     every { fileHandler.isBookLessThan4GB() } returns true
-    every { fileHandler.showCopyMoveDialog() } just Runs
+    every { fileHandler.performCopyMoveOperationIfSufficientSpaceAvailable() } just Runs
 
     fileHandler.handleCannotWrite4GbFileState()
 
-    verify { fileHandler.showCopyMoveDialog() }
+    verify { fileHandler.performCopyMoveOperationIfSufficientSpaceAvailable() }
   }
 
   @Test
@@ -202,52 +202,50 @@ class CopyMoveFileHandlerTest {
   }
 
   @Test
-  fun showMoveToPublicDirectoryPermissionDialogShouldShowPermissionDialogAtFirstLaunch() {
+  fun showStorageConfigureDialogAtFirstLaunch() {
-    every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns true
-    every { alertDialogShower.show(any(), any(), any()) } just Runs
-    fileHandler.showMoveFileToPublicDirectoryDialog(fragmentManager = fragmentManager)
-
-    verify {
-      alertDialogShower.show(
-        KiwixDialog.CopyMoveFileToPublicDirectoryDialog,
-        any(),
-        any()
-      )
-    }
-  }
-
-  @Test
-  fun copyMoveFunctionsShouldCallWhenClickingOnButtonsInPermissionDialog() {
-    val positiveButtonClickSlot = slot<() -> Unit>()
-    val negativeButtonClickSlot = slot<() -> Unit>()
     fileHandler = spyk(fileHandler)
+    every { fileHandler.showStorageSelectDialog() } just Runs
     every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns true
+    every { fileHandler.storageDeviceList } returns listOf(mockk(), mockk())
+    val positiveButtonClickSlot = slot<() -> Unit>()
     every {
       alertDialogShower.show(
         KiwixDialog.CopyMoveFileToPublicDirectoryDialog,
         capture(positiveButtonClickSlot),
-        capture(negativeButtonClickSlot)
+        any()
       )
     } just Runs
-
     fileHandler.showMoveFileToPublicDirectoryDialog(fragmentManager = fragmentManager)
     every { fileHandler.validateZimFileCanCopyOrMove() } returns true
-    every { fileHandler.performCopyOperation(false) } just Runs
-
     positiveButtonClickSlot.captured.invoke()
-    verify { fileHandler.performCopyOperation(false) }
+    verify { fileHandler.showStorageSelectDialog() }
-    every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns false
-    every { fileHandler.performMoveOperation(false) } just Runs
-    negativeButtonClickSlot.captured.invoke()
-
-    verify { fileHandler.performMoveOperation(false) }
-
-    verify { sharedPreferenceUtil.shouldShowStorageSelectionDialog = true }
   }
 
   @Test
-  fun showCopyMoveDialog() {
+  fun shouldNotShowStorageConfigureDialogWhenThereIsOnlyInternalAvailable() {
+    fileHandler = spyk(fileHandler)
+    every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns true
+    every { fileHandler.storageDeviceList } returns listOf(mockk())
+    val positiveButtonClickSlot = slot<() -> Unit>()
+    every {
+      alertDialogShower.show(
+        KiwixDialog.CopyMoveFileToPublicDirectoryDialog,
+        capture(positiveButtonClickSlot),
+        any()
+      )
+    } just Runs
+    every { fileHandler.validateZimFileCanCopyOrMove() } returns true
+    fileHandler.showMoveFileToPublicDirectoryDialog(fragmentManager = fragmentManager)
+    positiveButtonClickSlot.captured.invoke()
+    verify(exactly = 0) { fileHandler.showStorageSelectDialog() }
+  }
+
+  @Test
+  fun showDirectlyCopyMoveDialogAfterFirstLaunch() {
+    fileHandler = spyk(fileHandler)
     every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns false
+    every { fileHandler.storageDeviceList } returns listOf(mockk(), mockk())
+    every { fileHandler.validateZimFileCanCopyOrMove() } returns true
     prepareFileSystemAndFileForMockk()
     every { alertDialogShower.show(any(), any(), any()) } just Runs
     fileHandler.showMoveFileToPublicDirectoryDialog(fragmentManager = fragmentManager)
@@ -266,6 +264,7 @@ class CopyMoveFileHandlerTest {
     val positiveButtonClickSlot = slot<() -> Unit>()
     val negativeButtonClickSlot = slot<() -> Unit>()
     fileHandler = spyk(fileHandler)
+    every { fileHandler.storageDeviceList } returns listOf(mockk(), mockk())
     every { sharedPreferenceUtil.shouldShowStorageSelectionDialog } returns false
     every {
       alertDialogShower.show(