Merge pull request #570 from GetStream/fix-persistence-flaky-test

test(persistence): fix flaky channel query test

packages/stream_chat_persistence/test/src/dao/channel_query_dao_test.dart

@@ -1,5 +1,3 @@
-import 'dart:math' as math;
-
 import 'package:stream_chat/stream_chat.dart';
 import 'package:stream_chat_persistence/src/dao/channel_query_dao.dart';
 import 'package:stream_chat_persistence/src/db/moor_chat_database.dart';
@@ -84,9 +82,9 @@ void main() {
         cid: cids[index],
         createdBy: users[index],
         config: ChannelConfig(),
-        extraData: {'test_custom_field': math.Random().nextInt(100)},
+        extraData: {'test_custom_field': 3 + index},
         createdAt: now,
-        memberCount: math.Random().nextInt(100),
+        memberCount: 3 + index,
         lastMessageAt: now.add(Duration(hours: index)),
       ),
     ).reversed.toList(growable: false);
@@ -99,6 +97,8 @@ void main() {
   }
 
   group('getChannels', () {
+    tearDown(() async => database.flush());
+
     final filter = Filter.in_('members', const ['testUserId']);
 
     test('should return empty list of channels', () async {