anchor.diff:          expect(utf8.decode(await bundle.entries[asset].contentsAsBytes()), asset);
         }
   
  -      fs.file('a/b/c/foo').deleteSync();
  +      fs.file(fixPath('a/b/c/foo')).deleteSync();
         bundle = AssetBundleFactory.instance.createBundle();
         await bundle.build(manifestPath: 'pubspec.yaml');
   
  
positive.code:         'a/b/c/var3/foo',
        ];
        for (String asset in assets) {
          fs.file(asset)
            ..createSync(recursive: true)
            ..writeAsStringSync(asset);
        }
  
negative.code:         expect(bundle.entries.containsKey(asset), true);
          expect(utf8.decode(await bundle.entries[asset].contentsAsBytes()), asset);
        }
      }, overrides: <Type, Generator>{
        FileSystem: () => testFileSystem,
      });
    });
  }
  