anchor.diff:  import '../src/common.dart';
   import '../src/context.dart';
   import '../src/pubspec_schema.dart';
  +import '../src/testbed.dart';
   
   void main() {
     group('plugins', () {
  
positive.code: }
  
  class MockAndroidProject extends Mock implements AndroidProject {}
  class MockFeatureFlags extends Mock implements FeatureFlags {}
  class MockFlutterProject extends Mock implements FlutterProject {}
  class MockIosProject extends Mock implements IosProject {}
  class MockMacOSProject extends Mock implements MacOSProject {}
  
negative.code:     });
  
      group('createPluginSymlinks', () {
        FeatureFlags featureFlags;
  
        setUp(() {
          featureFlags = TestFeatureFlags(isLinuxEnabled: true, isWindowsEnabled: true);
        });
  
        testUsingContext('Symlinks are created for Linux plugins', () async {
  