add initialized channel tests

Signed-off-by: Sahil Kumar <[email protected]>

packages/stream_chat/test/src/mocks.dart

@@ -1,6 +1,7 @@
 import 'package:dio/dio.dart';
 import 'package:logging/logging.dart';
 import 'package:mocktail/mocktail.dart';
+import 'package:stream_chat/src/client/client.dart';
 import 'package:stream_chat/src/core/api/attachment_file_uploader.dart';
 import 'package:stream_chat/src/core/api/channel_api.dart';
 import 'package:stream_chat/src/core/api/device_api.dart';
@@ -12,8 +13,13 @@ import 'package:stream_chat/src/core/api/user_api.dart';
 import 'package:stream_chat/src/core/http/connection_id_manager.dart';
 import 'package:stream_chat/src/core/http/stream_http_client.dart';
 import 'package:stream_chat/src/core/http/token_manager.dart';
+import 'package:stream_chat/src/core/models/channel_config.dart';
+import 'package:stream_chat/src/core/models/channel_model.dart';
+import 'package:stream_chat/src/db/chat_persistence_client.dart';
 import 'package:web_socket_channel/web_socket_channel.dart';
 
+import 'db/chat_persistence_client_test.dart';
+
 class MockWebSocketChannel extends Mock implements WebSocketChannel {}
 
 class MockWebSocketSink extends Mock implements WebSocketSink {}
@@ -57,3 +63,24 @@ class MockGeneralApi extends Mock implements GeneralApi {}
 
 class MockAttachmentFileUploader extends Mock
     implements AttachmentFileUploader {}
+
+class MockPersistenceClient extends Mock implements ChatPersistenceClient {}
+
+class MockStreamChatClient extends Mock implements StreamChatClient {
+  @override
+  bool get persistenceEnabled => false;
+}
+
+class MockStreamChatClientWithPersistence extends Mock
+    implements StreamChatClient {
+  ChatPersistenceClient? _persistenceClient;
+
+  @override
+  ChatPersistenceClient get chatPersistenceClient =>
+      _persistenceClient ??= MockPersistenceClient();
+
+  @override
+  bool get persistenceEnabled => true;
+}
+
+class MockChannelConfig extends Mock implements ChannelConfig {}