feat(auth): add mocked cache data source

packages/wyatt_authentication_bloc/lib/src/data/data_sources/local/authentication_mock_cache_data_source_impl.dart

@@ -0,0 +1,41 @@
+// Copyright (C) 2023 WYATT GROUP
+// Please see the AUTHORS file for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import 'package:wyatt_authentication_bloc/wyatt_authentication_bloc.dart';
+
+/// {@template authentication_mock_cache_data_source_impl}
+/// A data source that manages the cache strategy.
+/// This implementation is mocked.
+/// {@endtemplate}
+class AuthenticationMockCacheDataSourceImpl<Data>
+    extends AuthenticationCacheDataSource<Data> {
+  /// {@macro authentication_mock_cache_data_source_impl}
+  AuthenticationMockCacheDataSourceImpl();
+
+  @override
+  Future<void> cacheAccount(Account account) => Future.value();
+
+  /// Always returns null.
+  @override
+  Future<Account?> getCachedAccount() async {
+    await Future<void>.delayed(const Duration(milliseconds: 200));
+    
+return null;
+  }
+
+  @override
+  Future<void> removeCachedAccount() => Future.value();
+}

packages/wyatt_authentication_bloc/lib/src/data/data_sources/local/local.dart

@@ -15,5 +15,6 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 export 'authentication_firebase_cache_data_source_impl.dart';
+export 'authentication_mock_cache_data_source_impl.dart';
 export 'authentication_secure_storage_cache_data_source_impl.dart';
 export 'authentication_session_data_source_impl.dart';