diff --git a/packages/stream_chat/test/src/core/platform_detector/platform_detector_test.dart b/packages/stream_chat/test/src/core/platform_detector/platform_detector_test.dart
new file mode 100644
index 00000000..110fb64e
--- /dev/null
+++ b/packages/stream_chat/test/src/core/platform_detector/platform_detector_test.dart
@@ -0,0 +1,25 @@
+@TestOn('linux')
+import 'package:stream_chat/src/core/platform_detector/platform_detector.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('`.type` should return current platform', () {
+    final type = CurrentPlatform.type;
+    expect(type, PlatformType.linux);
+  });
+
+  test('`.name` should return current platform name', () {
+    final name = CurrentPlatform.name;
+    expect(name, 'linux');
+  });
+
+  test('flags', () {
+    expect(CurrentPlatform.isWeb, isFalse);
+    expect(CurrentPlatform.isIos, isFalse);
+    expect(CurrentPlatform.isLinux, isTrue);
+    expect(CurrentPlatform.isAndroid, isFalse);
+    expect(CurrentPlatform.isMacOS, isFalse);
+    expect(CurrentPlatform.isWindows, isFalse);
+    expect(CurrentPlatform.isFuchsia, isFalse);
+  });
+}
diff --git a/packages/stream_chat/test/src/ws/websocket_test.dart b/packages/stream_chat/test/src/ws/websocket_test.dart
index 73eecf3f..94033bf0 100644
--- a/packages/stream_chat/test/src/ws/websocket_test.dart
+++ b/packages/stream_chat/test/src/ws/websocket_test.dart
@@ -45,11 +45,10 @@ void main() {
       webSocketController.add(invocation.positionalArguments.first);
     });
     when(() => webSocketSink.close(any(), any())).thenAnswer(
-      (_) {
-        final res = webSocketController.close();
+      (_) async {
+        webSocketController.close();
         // re-initializing for future events
         webSocketController = StreamController<String>.broadcast();
-        return res;
       },
     );
   });