TF-3563 Add integration test for case view inline image in EmailView

integration_test/mixin/scenario_utils_mixin.dart

@@ -150,6 +150,16 @@ mixin ScenarioUtilsMixin {
     return file.writeAsBytes(bytes);
   }
 
+  Future<File> generateImageFromBase64({
+    required String fileName,
+    required String base64Data,
+  }) async {
+    final bytes = base64Decode(base64Data);
+    final directory = await getTemporaryDirectory();
+    final file = File('${directory.path}/$fileName');
+    return file.writeAsBytes(bytes);
+  }
+
   Future<List<Attachment>> uploadAttachments(
       List<String> attachmentPaths) async {
     final mailboxDashBoardController = Get.find<MailboxDashBoardController>();

integration_test/robots/composer_robot.dart

@@ -21,6 +21,7 @@ import 'package:tmail_ui_user/features/composer/presentation/widgets/recipient_s
 import 'package:tmail_ui_user/features/composer/presentation/widgets/subject_composer_widget.dart';
 import 'package:tmail_ui_user/features/upload/domain/state/local_image_picker_state.dart';
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+import 'package:tmail_ui_user/main/routes/route_navigation.dart';
 
 import '../base/core_robot.dart';
 import '../extensions/patrol_finder_extension.dart';
@@ -168,4 +169,19 @@ class ComposerRobot extends CoreRobot {
       .which<PopupItemWidget>((widget) => widget.iconAction == ImagePaths().icReadReceipt)
       .tap();
   }
+
+  Future<void> addInlineImageFromFile(File file) async {
+    final controller = getBinding<ComposerController>();
+
+    final filePath = file.path;
+    final fileSize = await file.length();
+    final fileName = filePath.split('/').last;
+
+    final fileInfo = FileInfo(
+      filePath: filePath,
+      fileSize: fileSize,
+      fileName: fileName,
+    );
+    controller?.handleSuccessViewState(LocalImagePickerSuccess(fileInfo));
+  }
 }

integration_test/scenarios/email_detailed/view_inline_image_scenario.dart

@@ -0,0 +1,108 @@
+import 'package:core/presentation/resources/image_paths.dart';
+import 'package:core/presentation/views/html_viewer/html_content_viewer_widget.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:model/email/prefix_email_address.dart';
+import 'package:tmail_ui_user/features/composer/presentation/composer_controller.dart';
+import 'package:tmail_ui_user/features/composer/presentation/composer_view.dart';
+import 'package:tmail_ui_user/features/thread/presentation/widgets/email_tile_builder.dart';
+import 'package:tmail_ui_user/main/routes/route_navigation.dart';
+
+import '../../base/base_test_scenario.dart';
+import '../../resources/image_resources.dart';
+import '../../robots/composer_robot.dart';
+import '../../robots/thread_robot.dart';
+
+class ViewInlineImageScenario extends BaseTestScenario {
+
+  const ViewInlineImageScenario(super.$);
+
+  @override
+  Future<void> runTestLogic() async {
+    const emailUser = String.fromEnvironment('BASIC_AUTH_EMAIL');
+    const emailSubject = 'View inline image in email view';
+
+    final threadRobot = ThreadRobot($);
+    final composerRobot = ComposerRobot($);
+    final imagePaths = ImagePaths();
+
+    await _createEmailWithInlineImage(
+      threadRobot: threadRobot,
+      composerRobot: composerRobot,
+      imagePaths: imagePaths,
+      emailUser: emailUser,
+      emailSubject: emailSubject,
+    );
+
+    await threadRobot.openEmailWithSubject(emailSubject);
+    await $.pumpAndSettle(duration: const Duration(seconds: 3));
+    await _expectEmailViewWithCidImageVisible();
+  }
+
+  Future<void> _createEmailWithInlineImage({
+    required ThreadRobot threadRobot,
+    required ComposerRobot composerRobot,
+    required ImagePaths imagePaths,
+    required String emailUser,
+    required String emailSubject,
+  }) async {
+    await threadRobot.openComposer();
+    await _expectComposerViewVisible();
+
+    await composerRobot.grantContactPermission();
+
+    await composerRobot.addRecipientIntoField(
+      prefixEmailAddress: PrefixEmailAddress.to,
+      email: emailUser,
+    );
+    await composerRobot.addSubject(emailSubject);
+
+    final imageFile = await generateImageFromBase64(
+      fileName: 'inline-image.png',
+      base64Data: ImageResources.base64,
+    );
+    await composerRobot.addInlineImageFromFile(imageFile);
+    await $.pumpAndSettle(duration: const Duration(seconds: 3));
+
+    await _expectInlineImageVisible();
+
+    await composerRobot.sendEmail(imagePaths);
+    await $.pumpAndSettle(duration: const Duration(seconds: 3));
+
+    await _expectEmailWithInlineImageVisible(emailSubject);
+  }
+
+  Future<void> _expectComposerViewVisible() => expectViewVisible($(ComposerView));
+
+  Future<void> _expectInlineImageVisible() async {
+    final currentHtmlContent = await getBinding<ComposerController>()?.getContentInEditor() ?? '';
+    expect(
+      currentHtmlContent.contains('data:image/') &&
+          currentHtmlContent.contains(';base64') &&
+          currentHtmlContent.contains('cid:'),
+      isTrue,
+    );
+  }
+
+  Future<void> _expectEmailWithInlineImageVisible(String emailSubject) async {
+    await expectViewVisible(
+      $(EmailTileBuilder).which<EmailTileBuilder>(
+          (widget) => widget.presentationEmail.subject == emailSubject),
+    );
+  }
+
+  Future<void> _expectEmailViewWithCidImageVisible() async {
+    HtmlContentViewer? htmlContentViewer;
+
+    await $(HtmlContentViewer)
+      .which<HtmlContentViewer>((view) {
+        htmlContentViewer = view;
+        return true;
+      })
+      .first
+      .tap();
+
+    final contentHtml = htmlContentViewer!.contentHtml;
+    final cidCount = RegExp(r'cid').allMatches(contentHtml).length;
+    expect(cidCount, 1);
+  }
+}

integration_test/tests/email_detailed/view_inline_image_test.dart

@@ -0,0 +1,9 @@
+import '../../base/test_base.dart';
+import '../../scenarios/email_detailed/view_inline_image_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description: 'Should see inline image when open email with inline image',
+    scenarioBuilder: ($) => ViewInlineImageScenario($),
+  );
+}