Test instance type

packages/path_provider/path_provider/lib/path_provider.dart

@@ -36,6 +36,11 @@ class MissingPlatformDirectoryException implements Exception {
   }
 }
 
+void main() {
+
+}
+
+
 /// Path to the temporary directory on the device that is not backed up and is
 /// suitable for storing caches of downloaded files.
 ///

packages/shared_preferences/shared_preferences_linux/example/integration_test/shared_preferences_test.dart

@@ -8,6 +8,7 @@ import 'dart:async';
 
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
+import 'package:shared_preferences_linux/shared_preferences_linux.dart';
 import 'package:shared_preferences_platform_interface/shared_preferences_platform_interface.dart';
 
 void main() {
@@ -34,14 +35,16 @@ void main() {
 
     setUp(() {
       preferences = SharedPreferencesStorePlatform.instance;
-      expect(
-          preferences.runtimeType.toString(), equals('SharedPreferencesLinux'));
     });
 
     tearDown(() async {
       await preferences.clear();
     });
 
+    test('instance is Linux implementation', () {
+      expect(preferences, isA<PathProviderLinux>());
+    });
+
     testWidgets('reading', (WidgetTester _) async {
       final all = await preferences.getAll();
       expect(all['String'], isNull);