TF-3611 E2E Long press trash empty and recover

integration_test/robots/thread_robot.dart

@@ -94,4 +94,13 @@ class ThreadRobot extends CoreRobot {
   Future<void> confirmEmptySpam() async {
     await $(AppLocalizations().delete_all).tap();
   }
+
+  Future<void> tapEmptyTrashAfterLongPress() async {
+    await $(AppLocalizations().emptyTrash).tap();
+  }
+
+  Future<void> tapConfirmEmptyTrashAfterLongPress() async {
+    await $(AppLocalizations().delete).tap();
+    await $.pumpAndSettle(duration: const Duration(seconds: 2));
+  }
 }

integration_test/scenarios/mailbox/long_press_empty_and_recover_trash_scenario.dart

@@ -0,0 +1,95 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:model/extensions/presentation_mailbox_extension.dart';
+import 'package:model/mailbox/presentation_mailbox.dart';
+import 'package:tmail_ui_user/features/base/widget/clean_messages_banner.dart';
+import 'package:tmail_ui_user/features/mailbox/presentation/widgets/trailing_mailbox_item_widget.dart';
+import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+
+import '../../base/base_test_scenario.dart';
+import '../../models/provisioning_email.dart';
+import '../../robots/mailbox_menu_robot.dart';
+import '../../robots/thread_robot.dart';
+
+class LongPressEmptyAndRecoverTrashScenario extends BaseTestScenario {
+  const LongPressEmptyAndRecoverTrashScenario(super.$);
+  
+  @override
+  Future<void> runTestLogic() async {
+    const toEmail = String.fromEnvironment('BASIC_AUTH_EMAIL');
+    const subject = 'long press trash';
+
+    final threadRobot = ThreadRobot($);
+    final mailboxMenuRobot = MailboxMenuRobot($);
+    final appLocalizations = AppLocalizations();
+
+    await provisionEmail(
+      [ProvisioningEmail(
+        toEmail: toEmail,
+        subject: subject,
+        content: '',
+      )],
+      folderLocationRole: PresentationMailbox.roleTrash,
+    );
+    await $.pumpAndTrySettle(duration: const Duration(seconds: 2));
+    await threadRobot.openMailbox();
+    await $.pumpAndTrySettle();
+    _expectTrashUnreadCountVisible(
+      appLocalizations.trashMailboxDisplayName,
+    );
+    await mailboxMenuRobot.longPressMailboxWithName(
+      appLocalizations.trashMailboxDisplayName,
+    );
+    await threadRobot.tapEmptyTrashAfterLongPress();
+    await threadRobot.tapConfirmEmptyTrashAfterLongPress();
+    _expectTrashUnreadCountInvisible(
+      appLocalizations.trashMailboxDisplayName,
+    );
+    await mailboxMenuRobot.openFolderByName(
+      appLocalizations.trashMailboxDisplayName,
+    );
+    await _expectTrashBannerInvisible();
+
+    await threadRobot.openMailbox();
+    await mailboxMenuRobot.longPressMailboxWithName(
+      appLocalizations.trashMailboxDisplayName,
+    );
+    await mailboxMenuRobot.tapRecoverDeletedMessages();
+    await mailboxMenuRobot.tapConfirmRecoverDeletedMessages();
+    await threadRobot.openMailbox();
+    await mailboxMenuRobot.openFolderByName(
+      appLocalizations.recoveredMailboxDisplayName,
+    );
+    await _expectEmailWithSubjectVisible(subject);
+  }
+  
+  Future<void> _expectTrashBannerInvisible() async {
+    await $(#clean_message_banner_not_visible).waitUntilExists();
+    expect($(CleanMessagesBanner).visible, false);
+  }
+
+  Future<void> _expectEmailWithSubjectVisible(String subject) async {
+    await expectViewVisible($(subject));
+  }
+
+  void _expectTrashUnreadCountVisible(String name) {
+    expect(
+      $(TrailingMailboxItemWidget).which<TrailingMailboxItemWidget>((widget) {
+        final mailbox = widget.mailboxNode.item;
+        return mailbox.name?.name.toLowerCase() == name.toLowerCase() &&
+            mailbox.countTotalEmailsAsString.isNotEmpty;
+      }),
+      findsOneWidget,
+    );
+  }
+
+  void _expectTrashUnreadCountInvisible(String name) {
+    expect(
+      $(TrailingMailboxItemWidget).which<TrailingMailboxItemWidget>((widget) {
+        final mailbox = widget.mailboxNode.item;
+        return mailbox.name?.name.toLowerCase() == name.toLowerCase() &&
+            mailbox.countTotalEmailsAsString.isNotEmpty;
+      }),
+      findsNothing,
+    );
+  }
+}

integration_test/tests/mailbox/long_press_empty_and_recover_trash_test.dart

@@ -0,0 +1,9 @@
+import '../../base/test_base.dart';
+import '../../scenarios/mailbox/long_press_empty_and_recover_trash_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description: 'Should empty and recover trash by long press mailbox successfully',
+    scenarioBuilder: ($) => LongPressEmptyAndRecoverTrashScenario($),
+  );
+}