added null safety for llc

packages/stream_chat/test/src/api/channel_test.dart

@@ -50,7 +50,7 @@ void main() {
           ),
         );
 
-        await channelClient.sendMessage(message);
+        await channelClient?.sendMessage(message);
 
         verify(() =>
             mockDio.post<String>('/channels/messaging/testid/message', data: {
@@ -80,7 +80,7 @@ void main() {
               statusCode: 200,
               requestOptions: FakeRequestOptions(),
             ));
-        await channelClient.watch();
+        await channelClient?.watch();
 
         when(
           () => mockDio.post<String>(
@@ -95,7 +95,7 @@ void main() {
           ),
         );
 
-        await channelClient.markRead();
+        await channelClient?.markRead();
 
         verify(() => mockDio.post<String>('/channels/messaging/testid/read',
             data: {})).called(1);
@@ -124,7 +124,7 @@ void main() {
           ),
         );
 
-        await channelClient.getReplies('messageid', pagination);
+        await channelClient?.getReplies('messageid', pagination);
 
         verify(() => mockDio.get<String>('/messages/messageid/replies',
             queryParameters: pagination.toJson())).called(1);
@@ -141,7 +141,7 @@ void main() {
           httpClient: mockDio,
           tokenProvider: (_) async => '',
         );
-        final channelClient = client.channel('messaging', id: 'testid');
+        Channel channelClient = client.channel('messaging', id: 'testid');
 
         when(() => mockDio.post<String>(
               any(),
@@ -564,7 +564,11 @@ void main() {
           'api-key',
           httpClient: mockDio,
           tokenProvider: (_) async => '',
-        )..state.user = OwnUser(id: 'test-id');
+        );
+
+        if (client != null) {
+          client.state?.user = OwnUser(id: 'test-id');
+        }
 
         final channelClient = client.channel('messaging', id: 'testid');
         const reactionType = 'test';
@@ -617,7 +621,11 @@ void main() {
           'api-key',
           httpClient: mockDio,
           tokenProvider: (_) async => '',
-        )..state.user = OwnUser(id: 'test-id');
+        );
+
+        if (client != null) {
+          client.state?.user = OwnUser(id: 'test-id');
+        }
 
         final channelClient = client.channel('messaging', id: 'testid');
 
@@ -1069,8 +1077,8 @@ void main() {
 
           verify(() => mockDio.post<String>('/channels/messaging/query',
               data: options)).called(1);
-          expect(channelClient.id, response.channel.id);
-          expect(channelClient.cid, response.channel.cid);
+          expect(channelClient.id, response?.channel?.id);
+          expect(channelClient.cid, response?.channel?.cid);
         });
 
         test('with id', () async {
@@ -1706,8 +1714,8 @@ void main() {
 
         verify(() => mockDio.post<String>('/channels/messaging/query',
             data: options)).called(1);
-        expect(channelClient.id, response.channel.id);
-        expect(channelClient.cid, response.channel.cid);
+        expect(channelClient.id, response?.channel?.id);
+        expect(channelClient.cid, response?.channel?.cid);
       });
 
       test('watch', () async {
@@ -2027,8 +2035,8 @@ void main() {
 
         verify(() => mockDio.post<String>('/channels/messaging/query',
             data: options)).called(1);
-        expect(channelClient.id, response.channel.id);
-        expect(channelClient.cid, response.channel.cid);
+        expect(channelClient.id, response.channel?.id);
+        expect(channelClient.cid, response.channel?.cid);
       });
 
       test('stopWatching', () async {

packages/stream_chat/test/src/api/websocket_test.dart

@@ -12,12 +12,10 @@ import 'package:web_socket_channel/web_socket_channel.dart';
 
 class Functions {
   WebSocketChannel connectFunc(
-    String url, {
-    Iterable<String> protocols,
-    Map<String, dynamic> headers,
-    Duration pingInterval,
+    String? url, {
+    Iterable<String>? protocols,
   }) =>
-      null;
+      WebSocketChannel.connect(Uri());
 
   void handleFunc(Event event) {}
 }
@@ -94,7 +92,7 @@ void main() {
     when(() => mockWSChannel.sink).thenAnswer((_) => MockWSSink());
     when(() => mockWSChannel.stream).thenAnswer((_) => streamController.stream);
 
-    final connect = ws.connect().then((_) {
+    final connect = ws.connect()?.then((_) {
       streamController.sink.add('{}');
       return Future.delayed(const Duration(milliseconds: 200));
     }).then((value) {
@@ -130,7 +128,7 @@ void main() {
     when(() => mockWSChannel.sink).thenAnswer((_) => MockWSSink());
     when(() => mockWSChannel.stream).thenAnswer((_) => streamController.stream);
 
-    final connect = ws.connect().then((_) {
+    final connect = ws.connect()?.then((_) {
       streamController.sink.add('{}');
       return Future.delayed(const Duration(milliseconds: 200));
     }).then((value) {
@@ -208,7 +206,7 @@ void main() {
       (_) => streamController.sink.add('{}'),
     );
 
-    final connect = ws.connect().then((_) {
+    final connect = ws.connect()?.then((_) {
       streamController.sink.add('{}');
       return Future.delayed(const Duration(milliseconds: 200));
     }).then((value) async {
@@ -249,7 +247,7 @@ void main() {
     when(() => mockWSChannel.stream).thenAnswer((_) => streamController.stream);
     when(() => mockWSChannel.sink).thenReturn(mockWSSink);
 
-    final connect = ws.connect().then((_) {
+    final connect = ws.connect()?.then((_) {
       streamController.sink.add('{}');
       streamController.close();
       streamController = StreamController<String>.broadcast();
@@ -292,7 +290,7 @@ void main() {
     when(() => mockWSChannel.stream).thenAnswer((_) => streamController.stream);
     when(() => mockWSChannel.sink).thenReturn(mockWSSink);
 
-    final connect = ws.connect().then((_) {
+    final connect = ws.connect()?.then((_) {
       streamController.sink.add('{}');
       return Future.delayed(const Duration(milliseconds: 200));
     }).then((value) async {