anchor.diff:    bool onDowngradeCalled;
     bool onUpgradeCalled;
   
  -
     OnDatabaseCreateFn onCreate;
     OnDatabaseConfigureFn onConfigure;
     OnDatabaseVersionChangeFn onDowngrade;
  
positive.code: 
  class OpenTestPage extends TestPage {
    OpenTestPage() : super("Open tests") {
      test('Databases path', () async {
        // await Sqflite.devSetDebugModeOn(false);
        var databasesPath = await getDatabasesPath();
  
negative.code:       ]);
        await db.close();
      });
  
      test('open in sub directory', () async {
        var databasesPath = await factory.getDatabasesPath();
        String path = join(databasesPath, 'sub_that_should_not_exists');
        try {
          await new Directory(path).delete(recursive: true);
        } catch (_) {}
        var dbPath = join(path, 'open.db');
        var db = await factory.openDatabase(dbPath);
        try {} finally {
          await db.close();
        }
      });
  
      test('open in sub sub directory', () async {
        // await Sqflite.devSetDebugModeOn(true);
        var databasesPath = await factory.getDatabasesPath();
        String path =
            join(databasesPath, 'sub2_that_should_not_exists', 'sub_sub');
        try {
          await new Directory(path).delete(recursive: true);
        } catch (_) {}
        expect(await new Directory(path).exists(), false);
        var dbPath = join(path, 'open.db');
        var db = await factory.openDatabase(dbPath);
        try {} finally {
          await db.close();
        }
      });
    }
  }
  
  